Changes for page DS20L -- LoRaWAN Smart Distance Detector User Manual 01

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1		-DDS20-LB -- LoRaWAN Ultrasonic Liquid Level Sensor User Manual
	1	+DS20L -- LoRaWAN Smart Distance Detector User Manual

Content

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1	1	(% style="text-align:center" %)
2		-[[image:image-20230613133716-2.png||height="717" width="717"]]
	2	+[[image:image-20231110085342-2.png||height="481" width="481"]]
3	3
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19	19
20	20	= 1. Introduction =
21	21
22		-== 1.1 What is LoRaWAN Ultrasonic liquid level Sensor ==
	22	+== 1.1 What is LoRaWAN Smart Distance Detector ==
23	23
24	24
25		-The Dragino DDS20-LB is a (% style="color:blue" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:blue" %)**none-contact method **(%%)to measure the (% style="color:blue" %)**height of liquid**(%%) in a container without opening the container, and send the value via LoRaWAN network to IoT Server.
	25	+The Dragino (% style="color:blue" %)**DS20L is a smart distance detector**(%%) base on long-range wireless LoRaWAN technology. It uses (% style="color:blue" %)**LiDAR sensor**(%%) to detect the distance between DS20L and object, then DS20L will send the distance data to the IoT Platform via LoRaWAN. DS20L can measure range between 3cm ~~ 200cm.
26	26
27		-The DDS20-LB sensor is installed directly below the container to detect the height of the liquid level. User doesn't need to open a hole on the container to be tested. The none-contact measurement makes the measurement safety, easier and possible for some strict situation.
	27	+DS20L allows users to send data and reach extremely long ranges via LoRaWAN. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current
	28	+consumption. It targets professional wireless sensor network applications such smart cities, building automation, and so on.
28	28
29		-DDS20-LB uses (% style="color:blue" %)**ultrasonic sensing technology**(%%) for distance measurement. DDS20-LB is of high accuracy to measure various liquid such as: (% style="color:blue" %)**toxic substances**(%%), (% style="color:blue" %)**strong acids**(%%), (% style="color:blue" %)**strong alkalis**(%%) and (% style="color:blue" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
	30	+DS20L has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) for long-term use up to several years*. Users can also power DS20L with an external power source for (% style="color:blue" %)**continuous measuring and distance alarm / counting purposes.**
30	30
31		-The LoRa wireless technology used in DDS20-LB allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
	32	+DS20L is fully compatible with (% style="color:blue" %)**LoRaWAN v1.0.3 Class A protocol**(%%), it can work with a standard LoRaWAN gateway.
32	32
33		-DDS20-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
34	34
35		-DDS20-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
	35	+[[image:image-20231110102635-5.png||height="402" width="807"]]
36	36
37		-Each DDS20-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
38	38
39		-[[image:image-20230613140115-3.png||height="453" width="800"]]
40		-
41		-
42	42	== 1.2 ​Features ==
43	43
44	44
45		-* LoRaWAN 1.0.3 Class A
46		-* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
47		-* Ultra-low power consumption
48		-* Liquid Level Measurement by Ultrasonic technology
49		-* Measure through container, No need to contact Liquid
50		-* Valid level range 20mm - 2000mm
51		-* Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
52		-* Cable Length : 25cm
53		-* Support Bluetooth v5.1 and LoRaWAN remote configure
54		-* Support wireless OTA update firmware
	41	+* LoRaWAN Class A protocol
	42	+* LiDAR distance detector, range 3 ~~ 200cm
	43	+* Periodically detect or continuously detect mode
55	55	* AT Commands to change parameters
56		-* Downlink to change configure
57		-* IP66 Waterproof Enclosure
58		-* 8500mAh Battery for long term use
	45	+* Remotely configure parameters via LoRaWAN Downlink
	46	+* Alarm & Counting mode
	47	+* Firmware upgradable via program port or LoRa protocol
	48	+* Built-in 2400mAh battery or power by external power source
59	59
	50	+
60	60	== 1.3 Specification ==
61	61
62	62
63		-(% style="color:#037691" %)**Common DC Characteristics:**
	54	+(% style="color:#037691" %)**LiDAR Sensor:**
64	64
65		-* Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
66		-* Operating Temperature: -40 ~~ 85°C
	56	+* Operation Temperature: -40 ~~ 80 °C
	57	+* Operation Humidity: 0~~99.9%RH (no Dew)
	58	+* Storage Temperature: -10 ~~ 45°C
	59	+* Measure Range: 3cm~~200cm @ 90% reflectivity
	60	+* Accuracy: ±2cm @ (3cm~~100cm); ±5% @ (100~~200cm)
	61	+* ToF FoV: ±9°, Total 18°
	62	+* Light source: VCSEL
67	67
68		-(% style="color:#037691" %)**LoRa Spec:**
69	69
70		-* Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
71		-* Max +22 dBm constant RF output vs.
72		-* RX sensitivity: down to -139 dBm.
73		-* Excellent blocking immunity
74	74
75		-(% style="color:#037691" %)**Battery:**
76	76
77		-* Li/SOCI2 un-chargeable battery
78		-* Capacity: 8500mAh
79		-* Self-Discharge: <1% / Year @ 25°C
80		-* Max continuously current: 130mA
81		-* Max boost current: 2A, 1 second
	67	+== 1.4 Power Consumption ==
82	82
83		-(% style="color:#037691" %)**Power Consumption**
84	84
85		-* Sleep Mode: 5uA @ 3.3v
86		-* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
	70	+(% style="color:#037691" %)**Battery Power Mode:**
87	87
88		-== 1.4 Suitable Container & Liquid ==
	72	+* Idle: 0.003 mA @ 3.3v
	73	+* Max : 360 mA
89	89
	75	+(% style="color:#037691" %)**Continuously mode**:
90	90
91		-* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
92		-* Container shape is regular, and surface is smooth.
93		-* Container Thickness:
94		-** Pure metal material.  2~~8mm, best is 3~~5mm
95		-** Pure non metal material: <10 mm
96		-* Pure liquid without irregular deposition.(% style="display:none" %)
	77	+* Idle: 21 mA @ 3.3v
	78	+* Max : 360 mA
97	97
98		-== 1.5 Install DDS20-LB ==
99	99
100	100
101		-(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
102	102
103		-DDS20-LB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
	83	+= 2. Configure DS20L to connect to LoRaWAN network =
104	104
105		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615091045-3.png?rev=1.1||alt="image-20220615091045-3.png"]]
	85	+== 2.1 How it works ==
106	106
107	107
108		-(((
109		-(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
110		-)))
	88	+The DS20L is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the DS20L. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
111	111
112		-(((
113		-For Metal Surface with paint, it is important to polish the surface, first use crude sand paper to polish the paint level , then use exquisite sand paper to polish the metal level to make it shine & smooth.
114		-)))
	90	+(% style="display:none" %) (%%)
115	115
116		-[[image:image-20230613143052-5.png]]
	92	+== 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
117	117
118	118
119		-No polish needed if the container is shine metal surface without paint or non-metal container.
	95	+Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
120	120
121		-[[image:image-20230613143125-6.png]]
	97	+The LPS8v2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.(% style="display:none" %)
122	122
	99	+[[image:image-20231110102635-5.png||height="402" width="807"]](% style="display:none" %)
123	123
124		-(((
125		-(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
126		-)))
	101	+(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DS20L.
127	127
128		-(((
129		-Power on DDS20-LB, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point.
130		-)))
	103	+Each DS20L is shipped with a sticker with the default device EUI as below:
131	131
132		-(((
133		-It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB won't detect the liquid level.
134		-)))
	105	+[[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
135	135
136		-(((
137		-After paste the DDS20-LB well, power on DDS20-LB. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life.
138		-)))
139	139
	108	+You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
140	140
141		-(((
142		-(% style="color:red" %)**LED Status:**
143		-)))
144	144
145		-* (((
146		-Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
147		-)))
	111	+(% style="color:blue" %)**Register the device**
148	148
149		-* (((
150		-(% style="color:blue" %)**BLUE LED**(% style="color:red" %)** always ON**(%%): Sensor is power on but doesn't detect liquid. There is problem in installation point.
151		-)))
152		-* (((
153		-(% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good.
154		-)))
	113	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]
155	155
156		-(((
157		-LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
158		-)))
159	159
	116	+(% style="color:blue" %)**Add APP EUI and DEV EUI**
160	160
161		-(((
162		-(% style="color:red" %)**Note 2:**
163		-)))
	118	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]
164	164
165		-(((
166		-(% style="color:red" %)**Ultrasonic coupling paste** (%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
167		-)))
168	168
	121	+(% style="color:blue" %)**Add APP EUI in the application**
169	169
170		-(((
171		-(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
172		-)))
173	173
174		-(((
175		-Prepare Eproxy AB glue.
176		-)))
	124	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="图片-20220611161308-5.png"]]
177	177
178		-(((
179		-Put Eproxy AB glue in the sensor and press it hard on the container installation point.
180		-)))
181	181
182		-(((
183		-Reset DDS20-LB and see if the BLUE LED is slowly blinking.
184		-)))
	127	+(% style="color:blue" %)**Add APP KEY**
185	185
186		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615091045-8.png?width=341&height=203&rev=1.1||alt="image-20220615091045-8.png"]] [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615091045-9.png?width=284&height=200&rev=1.1||alt="image-20220615091045-9.png"]]
	129	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]
187	187
188	188
189		-(((
190		-(% style="color:red" %)**Note 1:**(%%)** (% style="color:blue" %)Eproxy AB glue(%%)** needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
191		-)))
	132	+(% style="color:blue" %)**Step 2:**(%%) Activate on DS20L
192	192
193		-(((
194		-(% style="color:red" %)**Note 2:**(%%)** (% style="color:blue" %)Eproxy AB glue(%%)** is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
195		-)))
196	196
	135	+Press the button for 5 seconds to activate the DS20L.
197	197
198		-== 1.6 Applications ==
	137	+(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
199	199
	139	+After join success, it will start to upload messages to TTN and you can see the messages in the panel.
200	200
201		-* Smart liquid control solution.
202	202
203		-* Smart liquefied gas solution.
	142	+== 2.3 ​Uplink Payload ==
204	204
205		-== 1.7 Precautions ==
	144	+=== 2.3.1 Device Status, FPORT~=5 ===
206	206
207	207
208		-* At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
	147	+Users can use the downlink command(**0x26 01**) to ask DS20L to send device configure detail, include device configure status. DS20L will uplink a payload via FPort=5 to server.
209	209
210		-* For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container.
	149	+The Payload format is as below.
211	211
212		-* When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.(% style="display:none" %)
	151	+(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
	152	+|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
	153	+**Size(bytes)**
	154	+)))|=(% style="width: 100px; background-color: #4F81BD;color:white;" %)**1**|=(% style="width: 100px; background-color: #4F81BD;color:white;" %)**2**|=(% style="background-color: #4F81BD;color:white; width: 100px;" %)**1**|=(% style="background-color: #4F81BD;color:white; width: 100px;" %)**1**|=(% style="background-color: #4F81BD;color:white; width: 50px;" %)**2**
	155	+|(% style="width:62.5px" %)Value|(% style="width:110px" %)Sensor Model|(% style="width:48px" %)Firmware Version|(% style="width:94px" %)Frequency Band|(% style="width:91px" %)Sub-band|(% style="width:60px" %)BAT
213	213
214		-== 1.8 Sleep mode and working mode ==
	157	+Example parse in TTNv3
215	215
	159	+[[image:image-20230805103904-1.png||height="131" width="711"]]
216	216
217		-(% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.
	161	+(% style="color:blue" %)**Sensor Model**(%%): For DS20L, this value is 0x24
218	218
219		-(% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.
	163	+(% style="color:blue" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version
220	220
	165	+(% style="color:blue" %)**Frequency Band**:
221	221
222		-== 1.9 Button & LEDs ==
	167	+0x01: EU868
223	223
	169	+0x02: US915
224	224
225		-[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
	171	+0x03: IN865
226	226
	173	+0x04: AU915
227	227
228		-(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
229		-|=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
230		-|(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
231		-If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
232		-Meanwhile, BLE module will be active and user can connect via BLE to configure device.
233		-)))
234		-|(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
235		-(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network.
236		-(% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
237		-Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.
238		-)))
239		-|(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
	175	+0x05: KZ865
240	240
241		-== 1.10 BLE connection ==
	177	+0x06: RU864
242	242
	179	+0x07: AS923
243	243
244		-DDS20-LB support BLE remote configure.
	181	+0x08: AS923-1
245	245
246		-BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
	183	+0x09: AS923-2
247	247
248		-* Press button to send an uplink
249		-* Press button to active device.
250		-* Device Power on or reset.
	185	+0x0a: AS923-3
251	251
252		-If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
	187	+0x0b: CN470
253	253
	189	+0x0c: EU433
254	254
255		-== 1.11 Pin Definitions ==
	191	+0x0d: KR920
256	256
257		-[[image:image-20230523174230-1.png]]
	193	+0x0e: MA869
258	258
	195	+(% style="color:blue" %)**Sub-Band**:
259	259
260		-== 1.12 Mechanical ==
	197	+AU915 and US915:value 0x00 ~~ 0x08
261	261
	199	+CN470: value 0x0B ~~ 0x0C
262	262
263		-[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
	201	+Other Bands: Always 0x00
264	264
	203	+(% style="color:blue" %)**Battery Info**:
265	265
266		-[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
	205	+Check the battery voltage.
267	267
	207	+Ex1: 0x0B45 = 2885mV
268	268
269		-[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
	209	+Ex2: 0x0B49 = 2889mV
270	270
271	271
272		-(% style="color:blue" %)**Probe Mechanical:**
	212	+=== 2.3.2 Uplink Payload, FPORT~=2 ===
273	273
274		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-1.png?rev=1.1||alt="image-20220615090910-1.png"]]
275	275
	215	+(((
	216	+DS20L will send this uplink **after** Device Status once join the LoRaWAN network successfully. And DS20L will:
276	276
277		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-2.png?rev=1.1||alt="image-20220615090910-2.png"]]
	218	+periodically send this uplink every 20 minutes, this interval [[can be changed>>||anchor="H3.3.1SetTransmitIntervalTime"]].
278	278
	220	+Uplink Payload totals 11 bytes.
	221	+)))
279	279
280		-= 2. Configure DDS20-LB to connect to LoRaWAN network =
	223	+(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
	224	+|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
	225	+**Size(bytes)**
	226	+)))|=(% style="width: 30px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 80px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD;color:white; width: 80px;" %)**1**|=(% style="background-color: #4F81BD;color:white; width: 70px;" %)**1**|=(% style="background-color: #4F81BD;color:white; width: 70px;" %)**1**
	227	+|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)[[BAT>>||anchor="HBatteryInfo"]]|(% style="width:62.5px" %)(((
	228	+[[Temperature DS18B20>>||anchor="HDS18B20Temperaturesensor"]]
	229	+)))|[[Distance>>||anchor="HDistance"]]|[[Distance signal strength>>||anchor="HDistancesignalstrength"]]|(% style="width:122px" %)(((
	230	+[[Interrupt flag & Interrupt_level>>||anchor="HInterruptPin26A0InterruptLevel"]]
	231	+)))|(% style="width:54px" %)[[LiDAR temp>>||anchor="HLiDARtemp"]]|(% style="width:96px" %)(((
	232	+[[Message Type>>||anchor="HMessageType"]]
	233	+)))
281	281
282		-== 2.1 How it works ==
	235	+[[image:image-20230805104104-2.png||height="136" width="754"]]
283	283
284	284
285		-The DDS20-LB is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the DDS20-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
	238	+==== (% style="color:blue" %)**Battery Info**(%%) ====
286	286
287		-(% style="display:none" %) (%%)
288	288
289		-== 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
	241	+Check the battery voltage for DS20L.
290	290
	243	+Ex1: 0x0B45 = 2885mV
291	291
292		-Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
	245	+Ex2: 0x0B49 = 2889mV
293	293
294		-The LPS8v2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
295	295
296		-[[image:image-20230613140140-4.png||height="453" width="800"]](% style="display:none" %)
	248	+==== (% style="color:blue" %)**DS18B20 Temperature sensor**(%%) ====
297	297
298	298
299		-(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS20-LB.
	251	+This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
300	300
301		-Each DDS20-LB is shipped with a sticker with the default device EUI as below:
302	302
303		-[[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
	254	+**Example**:
304	304
	256	+If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
305	305
306		-You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
	258	+If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
307	307
308	308
309		-(% style="color:blue" %)**Register the device**
	261	+==== (% style="color:blue" %)**Distance**(%%) ====
310	310
311		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]
312	312
	264	+Represents the distance value of the measurement output, the default unit is cm, and the value range parsed as a decimal number is 0-1200. In actual use, when the signal strength value Strength.
313	313
314		-(% style="color:blue" %)**Add APP EUI and DEV EUI**
315	315
316		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]
	267	+**Example**:
317	317
	269	+If the data you get from the register is 0x0B 0xEA, the distance between the sensor and the measured object is 0BEA(H) = 3050 (D)/10 = 305cm.
318	318
319		-(% style="color:blue" %)**Add APP EUI in the application**
320	320
	272	+==== (% style="color:blue" %)**Distance signal strength**(%%) ====
321	321
322		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="图片-20220611161308-5.png"]]
323	323
	275	+Refers to the signal strength, the default output value will be between 0-65535. When the distance measurement gear is fixed, the farther the distance measurement is, the lower the signal strength; the lower the target reflectivity, the lower the signal strength. When Strength is greater than 100 and not equal to 65535, the measured value of Dist is considered credible.
324	324
325		-(% style="color:blue" %)**Add APP KEY**
326	326
327		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]
	278	+**Example**:
328	328
	280	+If payload is: 01D7(H)=471(D), distance signal strength=471, 471>100,471≠65535, the measured value of Dist is considered credible.
329	329
330		-(% style="color:blue" %)**Step 2:**(%%) Activate on DDS20-LB
	282	+Customers can judge whether they need to adjust the environment based on the signal strength.
331	331
332	332
333		-Press the button for 5 seconds to activate the DDS20-LB.
	285	+**1) When the sensor detects valid data:**
334	334
335		-(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
	287	+[[image:image-20230805155335-1.png||height="145" width="724"]]
336	336
337		-After join success, it will start to upload messages to TTN and you can see the messages in the panel.
338	338
	290	+**2) When the sensor detects invalid data:**
339	339
340		-== 2.3  ​Uplink Payload ==
	292	+[[image:image-20230805155428-2.png||height="139" width="726"]]
341	341
342	342
343		-(((
344		-DDS20-LB will uplink payload via LoRaWAN with below payload format:
345		-)))
	295	+**3) When the sensor is not connected:**
346	346
347		-(((
348		-Uplink payload includes in total 8 bytes.
349		-)))
	297	+[[image:image-20230805155515-3.png||height="143" width="725"]]
350	350
351		-(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
352		-|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
353		-**Size(bytes)**
354		-)))|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="background-color:#D9E2F3;color:#0070C0" %)1|=(% style="background-color:#D9E2F3;color:#0070C0" %)2|=(% style="background-color:#D9E2F3;color:#0070C0" %)**1**
355		-|(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
356		-[[Distance>>||anchor="H2.3.2A0Distance"]]
357		-(unit: mm)
358		-)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
359		-[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
360		-)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
361	361
362		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/1654850511545-399.png?rev=1.1||alt="1654850511545-399.png"]]
	300	+==== (% style="color:blue" %)**Interrupt Pin & Interrupt Level**(%%) ====
363	363
364	364
365		-=== 2.3.1  Battery Info ===
	303	+This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3.2SetInterruptMode"]] for the hardware and software set up.
366	366
	305	+Note: The Internet Pin is a separate pin in the screw terminal. See pin mapping of GPIO_EXTI .
367	367
368		-Check the battery voltage for DDS20-LB.
	307	+**Example:**
369	369
370		-Ex1: 0x0B45 = 2885mV
	309	+If byte[0]&0x01=0x00 : Normal uplink packet.
371	371
372		-Ex2: 0x0B49 = 2889mV
	311	+If byte[0]&0x01=0x01 : Interrupt Uplink Packet.
373	373
374	374
375		-=== 2.3.2  Distance ===
	314	+==== (% style="color:blue" %)**LiDAR temp**(%%) ====
376	376
377	377
	317	+Characterize the internal temperature value of the sensor.
	318	+
	319	+**Example: **
	320	+If payload is: 1C(H) <<24>>24=28(D),LiDAR temp=28℃.
	321	+If payload is: F2(H) <<24>>24=-14(D),LiDAR temp=-14℃.
	322	+
	323	+
	324	+==== (% style="color:blue" %)**Message Type**(%%) ====
	325	+
	326	+
378	378	(((
379		-Get the distance. Flat object range 20mm - 2000mm.
	328	+For a normal uplink payload, the message type is always 0x01.
380	380	)))
381	381
382	382	(((
383		-For example, if the data you get from the register is **0x06 0x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **
	332	+Valid Message Type:
	333	+)))
384	384
385		-(% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
	335	+(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:499px" %)
	336	+|=(% style="width: 161px;background-color:#4F81BD;color:white" %)**Message Type Code**|=(% style="width: 164px;background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 174px;background-color:#4F81BD;color:white" %)**Payload**
	337	+|(% style="width:160px" %)0x01|(% style="width:163px" %)Normal Uplink|(% style="width:173px" %)Normal Uplink Payload
	338	+|(% style="width:160px" %)0x02|(% style="width:163px" %)Reply configures info|(% style="width:173px" %)Configure Info Payload
	339	+
	340	+[[image:image-20230805150315-4.png||height="233" width="723"]]
	341	+
	342	+
	343	+=== 2.3.3 Historical measuring distance, FPORT~=3 ===
	344	+
	345	+
	346	+DS20L stores sensor values and users can retrieve these history values via the [[downlink command>>||anchor="H2.5.4Pollsensorvalue"]].
	347	+
	348	+The historical payload includes one or multiplies entries and every entry has the same payload as Real-Time measuring distance.
	349	+
	350	+(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
	351	+|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
	352	+**Size(bytes)**
	353	+)))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)1|=(% style="width: 80px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD; color: white; width: 85px;" %)**1**|=(% style="background-color: #4F81BD; color: white; width: 85px;" %)4
	354	+|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)Interrupt flag & Interrupt_level|(% style="width:62.5px" %)(((
	355	+Reserve(0xFF)
	356	+)))|Distance|Distance signal strength|(% style="width:88px" %)(((
	357	+LiDAR temp
	358	+)))|(% style="width:85px" %)Unix TimeStamp
	359	+
	360	+**Interrupt flag & Interrupt level:**
	361	+
	362	+(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
	363	+|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
	364	+**Size(bit)**
	365	+)))|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**bit7**|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**bit6**|=(% style="width: 60px;background-color:#4F81BD;color:white" %)**[bit5:bit2]**|=(% style="width: 90px; background-color: #4F81BD; color: white;" %)**bit1**|=(% style="background-color: #4F81BD; color: white; width: 90px;" %)**bit0**
	366	+|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)No ACK message|(% style="width:62.5px" %)Poll Message Flag|Reserve|(% style="width:91px" %)Interrupt level|(% style="width:88px" %)(((
	367	+Interrupt flag
386	386	)))
387	387
388		-* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
	370	+* (((
	371	+Each data entry is 11 bytes and has the same structure as [[Uplink Payload>>||anchor="H2.3.2UplinkPayload2CFPORT3D2"]], to save airtime and battery, DS20L will send max bytes according to the current DR and Frequency bands.
	372	+)))
389	389
390		-* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
	374	+For example, in the US915 band, the max payload for different DR is:
391	391
392		-=== 2.3.3  Interrupt Pin ===
	376	+**a) DR0:** max is 11 bytes so one entry of data
393	393
	378	+**b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
394	394
395		-This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3.2SetInterruptMode"]] for the hardware and software set up.
	380	+**c) DR2:** total payload includes 11 entries of data
396	396
397		-**Example:**
	382	+**d) DR3:** total payload includes 22 entries of data.
398	398
399		-0x00: Normal uplink packet.
	384	+If DS20L doesn't have any data in the polling time. It will uplink 11 bytes of 0
400	400
401		-0x01: Interrupt Uplink Packet.
402	402
	387	+**Downlink:**
403	403
404		-=== 2.3.4  DS18B20 Temperature sensor ===
	389	+0x31 64 CC 68 0C 64 CC 69 74 05
405	405
	391	+[[image:image-20230805144936-2.png||height="113" width="746"]]
406	406
407		-This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
	393	+**Uplink:**
408	408
409		-**Example**:
	395	+43 FF 0E 10 00 B0 1E 64 CC 68 0C 40 FF 0D DE 00 A8 1E 64 CC 68 29 40 FF 09 92 00 D3 1E 64 CC 68 65 40 FF 02 3A 02 BC 1E 64 CC 68 A1 41 FF 0E 1A 00 A4 1E 64 CC 68 C0 40 FF 0D 2A 00 B8 1E 64 CC 68 E8 40 FF 00 C8 11 6A 1E 64 CC 69 24 40 FF 0E 24 00 AD 1E 64 CC 69 6D
410	410
411		-If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
412	412
413		-If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
	398	+**Parsed Value:**
414	414
	400	+[DISTANCE , DISTANCE_SIGNAL_STRENGTH，LIDAR_TEMP，EXTI_STATUS , EXTI_FLAG , TIME]
415	415
416		-=== 2.3.5  Sensor Flag ===
417	417
	403	+[360,176,30,High,True,2023-08-04 02:53:00],
418	418
419		-(((
420		-0x01: Detect Ultrasonic Sensor
421		-)))
	405	+[355,168,30,Low,False,2023-08-04 02:53:29],
422	422
423		-(((
424		-0x00: No Ultrasonic Sensor
425		-)))
	407	+[245,211,30,Low,False,2023-08-04 02:54:29],
426	426
	409	+[57,700,30,Low,False,2023-08-04 02:55:29],
427	427
428		-=== 2.3.6  Decode payload in The Things Network ===
	411	+[361,164,30,Low,True,2023-08-04 02:56:00],
429	429
	413	+[337,184,30,Low,False,2023-08-04 02:56:40],
430	430
431		-While using TTN network, you can add the payload format to decode the payload.
	415	+[20,4458,30,Low,False,2023-08-04 02:57:40],
432	432
433		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654850829385-439.png?rev=1.1||alt="1654850829385-439.png"]]
	417	+[362,173,30,Low,False,2023-08-04 02:58:53],
434	434
435		-The payload decoder function for TTN V3 is here:
436	436
437		-(((
438		-DDS20-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
439		-)))
	420	+**History read from serial port：**
440	440
	422	+[[image:image-20230805145056-3.png]]
441	441
442		-== 2.4  Uplink Interval ==
443	443
	425	+=== 2.3.4 Decode payload in The Things Network ===
444	444
445		-The DDS20-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>||anchor="H3.3.1SetTransmitIntervalTime"]]
446	446
	428	+While using TTN network, you can add the payload format to decode the payload.
447	447
448		-== 2.5  ​Show Data in DataCake IoT Server ==
	430	+[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654592762713-715.png?rev=1.1||alt="1654592762713-715.png"]]
449	449
450	450
451	451	(((
	434	+The payload decoder function for TTN is here:
	435	+)))
	436	+
	437	+(((
	438	+DS20L TTN Payload Decoder:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
	439	+)))
	440	+
	441	+
	442	+== 2.4 ​Show Data in DataCake IoT Server ==
	443	+
	444	+
	445	+(((
452	452	[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
453	453	)))
454	454
...	...	@@ -470,7 +470,7 @@
470	470
471	471	(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
472	472
473		-(% style="color:blue" %)**Step 4**(%%)**: Search the DDS20-LB and add DevEUI.**
	467	+(% style="color:blue" %)**Step 4**(%%)**: Search the DS20L and add DevEUI.**
474	474
475	475	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654851029373-510.png?rev=1.1||alt="1654851029373-510.png"]]
476	476
...	...	@@ -480,35 +480,29 @@
480	480	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20220610165129-11.png?width=1088&height=595&rev=1.1||alt="image-20220610165129-11.png"]]
481	481
482	482
	477	+== 2.5 Datalog Feature ==
483	483
484		-== 2.6 Datalog Feature ==
485	485
	480	+Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DS20L will store the reading for future retrieving purposes.
486	486
487		-Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DDS20-LB will store the reading for future retrieving purposes.
488	488
	483	+=== 2.5.1 Ways to get datalog via LoRaWAN ===
489	489
490		-=== 2.6.1 Ways to get datalog via LoRaWAN ===
491	491
	486	+Set PNACKMD=1, DS20L will wait for ACK for every uplink, when there is no LoRaWAN network, DS20L will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
492	492
493		-Set PNACKMD=1, DDS20-LB will wait for ACK for every uplink, when there is no LoRaWAN network,DDS20-LB will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
494		-
495	495	* (((
496		-a) DDS20-LB will do an ACK check for data records sending to make sure every data arrive server.
	489	+a) DS20L will do an ACK check for data records sending to make sure every data arrive server.
497	497	)))
498	498	* (((
499		-b) DDS20-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but DDS20-LB won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if DDS20-LB gets a ACK, DDS20-LB will consider there is a network connection and resend all NONE-ACK messages.
	492	+b) DS20L will send data in **CONFIRMED Mode** when PNACKMD=1, but DS20L won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if DS20L gets a ACK, DS20L will consider there is a network connection and resend all NONE-ACK messages.
500	500	)))
501	501
502		-Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
	495	+=== 2.5.2 Unix TimeStamp ===
503	503
504		-[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220703111700-2.png?width=1119&height=381&rev=1.1||alt="图片-20220703111700-2.png" height="381" width="1119"]]
505	505
	498	+DS20L uses Unix TimeStamp format based on
506	506
507		-=== 2.6.2 Unix TimeStamp ===
508		-
509		-
510		-DDS20-LB uses Unix TimeStamp format based on
511		-
512	512	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-11.png?width=627&height=97&rev=1.1||alt="图片-20220523001219-11.png" height="97" width="627"]]
513	513
514	514	User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
...	...	@@ -521,23 +521,23 @@
521	521	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
522	522
523	523
524		-=== 2.6.3 Set Device Time ===
	512	+=== 2.5.3 Set Device Time ===
525	525
526	526
527	527	User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
528	528
529		-Once DDS20-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DDS20-LB. If DDS20-LB fails to get the time from the server, DDS20-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
	517	+Once DS20L Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DS20L. If DS20L fails to get the time from the server, DS20L will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
530	530
531	531	(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
532	532
533	533
534		-=== 2.6.4 Poll sensor value ===
	522	+=== 2.5.4 Poll sensor value ===
535	535
536	536
537	537	Users can poll sensor values based on timestamps. Below is the downlink command.
538	538
539	539	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
540		-|(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
	528	+|(% colspan="4" style="background-color:#4f81bd; color:white; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
541	541	|(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
542	542	|(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
543	543
...	...	@@ -554,24 +554,24 @@
554	554	)))
555	555
556	556	(((
557		-Uplink Internal =5s，means DDS20-LB will send one packet every 5s. range 5~~255s.
	545	+Uplink Internal =5s，means DS20L will send one packet every 5s. range 5~~255s.
558	558	)))
559	559
560	560
561		-== 2.7 Frequency Plans ==
	549	+== 2.6 Frequency Plans ==
562	562
563	563
564		-The DDS20-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
	552	+The DS20L uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
565	565
566	566	[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
567	567
568	568
569		-= 3. Configure DDS20-LB =
	557	+3. Configure DS20L
570	570
571	571	== 3.1 Configure Methods ==
572	572
573	573
574		-DDS20-LB supports below configure method:
	562	+DS20L supports below configure method:
575	575
576	576	* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
577	577
...	...	@@ -593,10 +593,10 @@
593	593	[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
594	594
595	595
596		-== 3.3 Commands special design for DDS20-LB ==
	584	+== 3.3 Commands special design for DS20L ==
597	597
598	598
599		-These commands only valid for DDS20-LB, as below:
	587	+These commands only valid for DS20L, as below:
600	600
601	601
602	602	=== 3.3.1 Set Transmit Interval Time ===
...	...	@@ -611,7 +611,7 @@
611	611	)))
612	612
613	613	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
614		-|=(% style="width: 156px;background-color:#D9E2F3; color:#0070c0" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3; color:#0070c0" %)**Function**|=(% style="background-color:#D9E2F3; color:#0070c0" %)**Response**
	602	+|=(% style="width: 156px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 137px;background-color:#4F81BD;color:white" %)**Function**|=(% style="background-color:#4F81BD;color:white" %)**Response**
615	615	|(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
616	616	30000
617	617	OK
...	...	@@ -639,25 +639,32 @@
639	639	)))
640	640	* (((
641	641	Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
	630	+
	631	+
	632	+
642	642	)))
643	643
644	644	=== 3.3.2 Set Interrupt Mode ===
645	645
646	646
647		-Feature, Set Interrupt mode for PA8 of pin.
	638	+Feature, Set Interrupt mode for pin of GPIO_EXTI.
648	648
649		-When AT+INTMOD=0 is set, PA8 is used as a digital input port.
	640	+When AT+INTMOD=0 is set, GPIO_EXTI is used as a digital input port.
650	650
651	651	(% style="color:blue" %)**AT Command: AT+INTMOD**
652	652
653	653	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
654		-|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
	645	+|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**
655	655	|(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
656	656	0
657	657	OK
658	658	the mode is 0 =Disable Interrupt
659	659	)))
660		-|(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
	651	+|(% style="width:154px" %)(((
	652	+AT+INTMOD=2
	653	+
	654	+(default)
	655	+)))|(% style="width:196px" %)(((
661	661	Set Transmit Interval
662	662	0. (Disable Interrupt),
663	663	~1. (Trigger by rising and falling edge)
...	...	@@ -678,7 +678,7 @@
678	678	= 4. Battery & Power Consumption =
679	679
680	680
681		-DDS20-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
	676	+DS20L use built-in 2400mAh non-chargeable battery for long-term use up to several years*. See below link for detail information about the battery info and how to replace.
682	682
683	683	[[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
684	684
...	...	@@ -687,7 +687,7 @@
687	687
688	688
689	689	(% class="wikigeneratedid" %)
690		-User can change firmware DDS20-LB to:
	685	+User can change firmware DS20L to:
691	691
692	692	* Change Frequency band/ region.
693	693
...	...	@@ -695,50 +695,48 @@
695	695
696	696	* Fix bugs.
697	697
698		-Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/ph4uyz0rchflrnw/AADr1f_5Sg30804NItpfOQbla?dl=0]]**
	693	+Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/zqv1vt3komgp4tu/AAC33PnXIcWOVl_UXBEAeT_xa?dl=0]]**
699	699
700	700	Methods to Update Firmware:
701	701
702		-* (Recommanded way) OTA firmware update via wireless:  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]
	697	+* (Recommanded way) OTA firmware update via wireless:  **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]**
703	703
704	704	* Update through UART TTL interface: **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
705	705
706		-
707	707	= 6. FAQ =
708	708
709		-== 6.1  What is the frequency plan for DDS20-LB? ==
	703	+== 6.1 What is the frequency plan for DS20L? ==
710	710
711	711
712		-DDS20-LB use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
	706	+DS20L use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
713	713
714	714
715		-== 6.2  Can I use DDS20-LB in condensation environment? ==
	709	+= 7. Trouble Shooting =
716	716
	711	+== 7.1 AT Command input doesn't work ==
717	717
718		-DDS20-LB is not suitable to be used in condensation environment. Condensation on the DDS20-LB probe will affect the reading and always got 0.
719	719
	714	+In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:blue" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:blue" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
720	720
721		-= 7.  Trouble Shooting =
722	722
723		-== 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
	717	+== 7.2 Significant error between the output distant value of LiDAR and actual distance ==
724	724
725	725
726		-It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
	720	+(((
	721	+(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance. (such as glass and water, etc.)
	722	+)))
727	727
	724	+(((
	725	+(% style="color:red" %)**Troubleshooting**(%%): Please avoid use of this product under such circumstance in practice.
	726	+)))
728	728
729		-== 7.2  AT Command input doesn't work ==
730	730
731		-
732		-In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:blue" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:blue" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
733		-
734		-
735		-== 7.3  Why i always see 0x0000 or 0 for the distance value? ==
736		-
737		-
738	738	(((
739		-LDDS20 has a strict [[**installation requirement**>>||anchor="H1.5A0InstallDDS20-LB"]]. Please make sure the installation method exactly follows up with the installation requirement. Otherwise, the reading might be always 0x00.
	730	+(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
	731	+)))
740	740
741		-If you have followed the instruction requirement exactly but still see the 0x00 reading issue, please. please double-check the decoder, you can check the raw payload to verify.
	733	+(((
	734	+(% style="color:red" %)**Troubleshooting**(%%): please use dry dust-free cloth to gently remove the foreign matter.
742	742	)))
743	743
744	744
...	...	@@ -745,7 +745,7 @@
745	745	= 8. Order Info =
746	746
747	747
748		-Part Number: (% style="color:blue" %)**DDS20-LB-XXX**
	741	+Part Number: (% style="color:blue" %)**DS20L-XXX**
749	749
750	750	(% style="color:red" %)**XXX**(%%): **The default frequency band**
751	751
...	...	@@ -770,7 +770,7 @@
770	770
771	771	(% style="color:#037691" %)**Package Includes**:
772	772
773		-* DDS20-LB LoRaWAN Ultrasonic Liquid Level Sensor x 1
	766	+* DS20L LoRaWAN Smart Distance Detector x 1
774	774
775	775	(% style="color:#037691" %)**Dimension and weight**:
776	776

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