Wiki source code of DDS20-LB -- LoRaWAN Ultrasonic Liquid Level Sensor User Manual

Version 75.1 by Xiaoling on 2023/06/13 13:37

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26.1	1	(% style="text-align:center" %)
73.8	2	[[image:image-20230613100900-1.png\|\|height="650" width="650"]]
1.1	3
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67.2	5
31.2	6	Table of Contents：
30.1	7
1.1	8	{{toc/}}
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	14
31.1	15	= 1. Introduction =
1.1	16
70.3	17	== 1.1 What is LoRaWAN Distance Detection Sensor ==
1.1	18
39.6	19
71.3	20	The Dragino DDS45-LB is a (% style="color:blue" %) LoRaWAN Distance Detection Sensor(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:blue" %) ultrasonic sensing technology(%%) for (% style="color:blue" %)distance measurement(%%), and (% style="color:blue" %) temperature compensation(%%) is performed internally to improve the reliability of data. The DDS45-LB can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
1.1	21
70.4	22	It detects the distance(% style="color:blue" %) between the measured object and the sensor(%%), and uploads the value via wireless to LoRaWAN IoT Server.
1.1	23
71.3	24	The LoRa wireless technology used in DDS45-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.
1.1	25
71.3	26	DDS45-LB (% style="color:blue" %)supports BLE configure(%%) and (% style="color:blue" %)wireless OTA update(%%) which make user easy to use.
62.4	27
71.3	28	DDS45-LB is powered by (% style="color:blue" %)8500mAh Li-SOCI2 battery(%%), it is designed for long term use up to 5 years.
1.1	29
71.3	30	Each DDS45-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.
1.1	31
73.2	32	[[image:image-20230613102459-3.png\|\|height="476" width="855"]]
1.1	33
64.2	34
1.1	35	== 1.2 Features ==
	36
39.6	37
1.1	38	* LoRaWAN 1.0.3 Class A
62.4	39	* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
1.1	40	* Ultra-low power consumption
70.5	41	* Distance Detection by Ultrasonic technology
73.3	42	* Flat object range 30mm - 4500mm
70.5	43	* Accuracy: ±(1cm+S*0.3%) (S: Distance)
73.3	44	* Measure Angle: 60°
70.5	45	* Cable Length : 25cm
1.1	46	* Support Bluetooth v5.1 and LoRaWAN remote configure
	47	* Support wireless OTA update firmware
70.5	48	* AT Commands to change parameters
1.1	49	* Downlink to change configure
70.5	50	* IP66 Waterproof Enclosure
1.1	51	* 8500mAh Battery for long term use
	52
73.9	53
1.1	54	== 1.3 Specification ==
	55
	56
70.28	57	(% style="color:#037691" %)Common DC Characteristics:
70.6	58
70.28	59	* Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
	60	* Operating Temperature: -40 ~~ 85°C
	61
	62	(% style="color:#037691" %)LoRa Spec:
	63
	64	* Frequency Range, Band 1 (HF): 862 ~~ 1020 Mhz
	65	* Max +22 dBm constant RF output vs.
	66	* RX sensitivity: down to -139 dBm.
	67	* Excellent blocking immunity
	68
	69	(% style="color:#037691" %)Battery:
	70
	71	* Li/SOCI2 un-chargeable battery
	72	* Capacity: 8500mAh
	73	* Self-Discharge: <1% / Year @ 25°C
	74	* Max continuously current: 130mA
	75	* Max boost current: 2A, 1 second
	76
	77	(% style="color:#037691" %)Power Consumption
	78
	79	* Sleep Mode: 5uA @ 3.3v
	80	* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
	81
73.9	82
70.28	83	== 1.4 Rated environmental conditions ==
	84
	85
70.6	86	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
	87	\|(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)Item\|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)(((
	88	Minimum value
	89	)))\|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
	90	Typical value
	91	)))\|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)(((
	92	Maximum value
	93	)))\|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)Unit\|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)Remarks
	94	\|(% style="width:174px" %)Storage temperature\|(% style="width:86px" %)-25\|(% style="width:66px" %)25\|(% style="width:90px" %)80\|(% style="width:48px" %)℃\|(% style="width:203px" %)
	95	\|(% style="width:174px" %)Storage humidity\|(% style="width:86px" %) \|(% style="width:66px" %)65%\|(% style="width:90px" %)90%\|(% style="width:48px" %)RH\|(% style="width:203px" %)(1)
	96	\|(% style="width:174px" %)Operating temperature\|(% style="width:86px" %)-15\|(% style="width:66px" %)25\|(% style="width:90px" %)60\|(% style="width:48px" %)℃\|(% style="width:203px" %)
	97	\|(% style="width:174px" %)Working humidity\|(% style="width:86px" %)(((
	98
	99
	100
	101	)))\|(% style="width:66px" %)65%\|(% style="width:90px" %)80%\|(% style="width:48px" %)RH\|(% style="width:203px" %)(1)
	102
	103	(((
70.20	104	(% style="color:red" %)Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);
70.6	105
70.20	106	(% style="color:red" %) b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)
70.6	107
	108
	109	)))
	110
70.28	111	== 1.5 Effective measurement range Reference beam pattern ==
1.1	112
	113
70.19	114	(% style="color:blue" %)1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.
62.4	115
70.6	116	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852253176-749.png?rev=1.1\|\|alt="1654852253176-749.png"]]
62.4	117
70.6	118
70.19	119	(% style="color:blue" %)*2. The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length width is 60cm * 50cm.**
70.6	120
	121	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852175653-550.png?rev=1.1\|\|alt="1654852175653-550.png"]]
	122
	123
70.28	124	== 1.6 Applications ==
70.6	125
	126
	127	* Horizontal distance measurement
	128	* Liquid level measurement
	129	* Parking management system
	130	* Object proximity and presence detection
	131	* Intelligent trash can management system
	132	* Robot obstacle avoidance
	133	* Automatic control
	134	* Sewer
	135	* Bottom water level monitoring
	136
73.9	137
70.28	138	== 1.7 Sleep mode and working mode ==
70.6	139
	140
1.1	141	(% 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.
	142
	143	(% 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.
	144
	145
70.28	146	== 1.8 Button & LEDs ==
1.1	147
	148
6.1	149	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
1.1	150
	151
14.13	152	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
14.11	153	\|=(% 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
1.1	154	\|(% style="width:167px" %)Pressing ACT between 1s < time < 3s\|(% style="width:117px" %)Send an uplink\|(% style="width:225px" %)(((
	155	If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)blue led (%%)will blink once.
	156	Meanwhile, BLE module will be active and user can connect via BLE to configure device.
	157	)))
	158	\|(% style="width:167px" %)Pressing ACT for more than 3s\|(% style="width:117px" %)Active Device\|(% style="width:225px" %)(((
	159	(% 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.
	160	(% style="color:green" %)Green led(%%) will solidly turn on for 5 seconds after joined in network.
	161	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.
	162	)))
6.1	163	\|(% 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.
1.1	164
73.9	165
70.28	166	== 1.9 BLE connection ==
1.1	167
	168
71.3	169	DDS45-LB support BLE remote configure.
1.1	170
	171
	172	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:
	173
	174	* Press button to send an uplink
	175	* Press button to active device.
	176	* Device Power on or reset.
	177
	178	If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
	179
	180
70.28	181	== 1.10 Pin Definitions ==
1.1	182
43.1	183	[[image:image-20230523174230-1.png]]
1.1	184
43.1	185
70.28	186	== 1.11 Mechanical ==
67.4	187
	188
6.1	189	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
1.1	190
	191
6.1	192	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
1.1	193
	194
6.1	195	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
1.1	196
	197
70.20	198	(% style="color:blue" %)Probe Mechanical:
70.10	199
73.4	200	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS45%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654915562090-396.png?rev=1.1\|\|alt="1654915562090-396.png"]]
70.10	201
	202
71.3	203	= 2. Configure DDS45-LB to connect to LoRaWAN network =
67.4	204
1.1	205	== 2.1 How it works ==
	206
	207
71.3	208	The DDS45-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 DDS45-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
1.1	209
64.2	210	(% style="display:none" %) (%%)
1.1	211
	212	== 2.2 Quick guide to connect to LoRaWAN server (OTAA) ==
	213
	214
	215	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.
	216
62.5	217	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.
1.1	218
73.2	219	[[image:image-20230613102426-2.png\|\|height="476" width="855"]](% style="display:none" %)
1.1	220
64.2	221
71.3	222	(% style="color:blue" %)Step 1:(%%) Create a device in TTN with the OTAA keys from DDS45-LB.
1.1	223
71.3	224	Each DDS45-LB is shipped with a sticker with the default device EUI as below:
1.1	225
30.1	226	[[image:image-20230426084152-1.png\|\|alt="图片-20230426084152-1.png" height="233" width="502"]]
1.1	227
	228
	229	You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
	230
	231
	232	(% style="color:blue" %)Register the device
	233
14.13	234	[[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"]]
1.1	235
	236
	237	(% style="color:blue" %)Add APP EUI and DEV EUI
	238
30.1	239	[[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"]]
1.1	240
	241
	242	(% style="color:blue" %)Add APP EUI in the application
	243
	244
30.1	245	[[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"]]
1.1	246
	247
	248	(% style="color:blue" %)Add APP KEY
	249
30.1	250	[[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"]]
1.1	251
	252
71.3	253	(% style="color:blue" %)Step 2:(%%) Activate on DDS45-LB
1.1	254
	255
71.3	256	Press the button for 5 seconds to activate the DDS45-LB.
6.1	257
1.1	258	(% 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.
	259
	260	After join success, it will start to upload messages to TTN and you can see the messages in the panel.
	261
	262
70.10	263	== 2.3 Uplink Payload ==
1.1	264
	265
62.5	266	(((
71.3	267	DDS45-LB will uplink payload via LoRaWAN with below payload format:
62.5	268	)))
1.1	269
62.5	270	(((
70.21	271	Uplink payload includes in total 8 bytes.
62.5	272	)))
1.1	273
67.7	274	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
70.10	275	\|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
	276	Size(bytes)
	277	)))\|=(% 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
	278	\|(% style="width:62.5px" %)Value\|(% style="width:62.5px" %)[[BAT>>\|\|anchor="H2.3.1A0BatteryInfo"]]\|(((
	279	[[Distance>>\|\|anchor="H2.3.2A0Distance"]]
	280	(unit: mm)
	281	)))\|[[Digital Interrupt (Optional)>>\|\|anchor="H2.3.3A0InterruptPin"]]\|(((
	282	[[Temperature (Optional )>>\|\|anchor="H2.3.4A0DS18B20Temperaturesensor"]]
	283	)))\|[[Sensor Flag>>\|\|anchor="H2.3.5A0SensorFlag"]]
1.1	284
70.10	285	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654850511545-399.png?rev=1.1\|\|alt="1654850511545-399.png"]]
1.1	286
	287
70.10	288	=== 2.3.1 Battery Info ===
1.1	289
	290
71.3	291	Check the battery voltage for DDS45-LB.
1.1	292
70.10	293	Ex1: 0x0B45 = 2885mV
1.1	294
70.10	295	Ex2: 0x0B49 = 2889mV
46.1	296
1.1	297
70.10	298	=== 2.3.2 Distance ===
67.7	299
	300
70.10	301	(((
73.5	302	Get the distance. Flat object range 30mm - 4500mm.
62.5	303	)))
1.1	304
62.5	305	(((
73.5	306	For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)
14.22	307
73.5	308	(% style="color:blue" %)0B05(H) = 2821 (D) = 2821 mm.
62.5	309	)))
1.1	310
70.10	311	* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
73.5	312	* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
67.7	313
73.6	314
70.10	315	=== 2.3.3 Interrupt Pin ===
67.7	316
10.1	317
70.22	318	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.
1.1	319
70.10	320	Example:
1.1	321
70.10	322	0x00: Normal uplink packet.
1.1	323
70.10	324	0x01: Interrupt Uplink Packet.
1.1	325
	326
70.10	327	=== 2.3.4 DS18B20 Temperature sensor ===
62.5	328
1.1	329
70.10	330	This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
1.1	331
70.10	332	Example:
1.1	333
70.10	334	If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
39.5	335
70.10	336	If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
1.1	337
	338
70.10	339	=== 2.3.5 Sensor Flag ===
1.1	340
	341
55.1	342	(((
70.10	343	0x01: Detect Ultrasonic Sensor
55.1	344	)))
	345
	346	(((
70.10	347	0x00: No Ultrasonic Sensor
55.1	348	)))
46.1	349
	350
70.10	351	=== 2.3.6 Decode payload in The Things Network ===
1.1	352
55.1	353
70.10	354	While using TTN network, you can add the payload format to decode the payload.
1.1	355
70.10	356	[[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"]]
1.1	357
70.10	358	The payload decoder function for TTN V3 is here:
1.1	359
62.5	360	(((
71.3	361	DDS45-LB TTN V3 Payload Decoder: [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
62.5	362	)))
1.1	363
	364
70.10	365	== 2.4 Uplink Interval ==
1.1	366
	367
71.3	368	The DDS45-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"]]
1.1	369
70.10	370
	371	== 2.5 Show Data in DataCake IoT Server ==
	372
	373
62.5	374	(((
70.10	375	[[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:
62.5	376	)))
1.1	377
	378
62.5	379	(((
70.10	380	(% style="color:blue" %)Step 1(%%): Be sure that your device is programmed and properly connected to the network at this time.
62.5	381	)))
1.1	382
62.5	383	(((
70.10	384	(% style="color:blue" %)Step 2(%%): To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:
62.5	385	)))
14.26	386
55.1	387
70.10	388	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592790040-760.png?rev=1.1\|\|alt="1654592790040-760.png"]]
1.1	389
	390
70.10	391	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592800389-571.png?rev=1.1\|\|alt="1654592800389-571.png"]]
1.1	392
	393
70.10	394	(% style="color:blue" %)Step 3(%%): Create an account or log in Datacake.
1.1	395
71.3	396	(% style="color:blue" %)Step 4(%%): Search the DDS45-LB and add DevEUI.
1.1	397
70.10	398	[[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"]]
62.5	399
1.1	400
70.10	401	After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
1.1	402
70.10	403	[[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"]]
1.1	404
	405
	406
70.10	407	== 2.6 Datalog Feature ==
1.1	408
	409
71.3	410	Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DDS45-LB will store the reading for future retrieving purposes.
62.5	411
	412
70.10	413	=== 2.6.1 Ways to get datalog via LoRaWAN ===
62.5	414
	415
71.3	416	Set PNACKMD=1, DDS45-LB will wait for ACK for every uplink, when there is no LoRaWAN network,DDS45-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.
62.5	417
	418	* (((
71.3	419	a) DDS45-LB will do an ACK check for data records sending to make sure every data arrive server.
62.5	420	)))
	421	* (((
71.3	422	b) DDS45-LB will send data in CONFIRMED Mode when PNACKMD=1, but DDS45-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 DDS45-LB gets a ACK, DDS45-LB will consider there is a network connection and resend all NONE-ACK messages.
62.5	423	)))
	424
	425	Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
	426
	427	[[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"]]
	428
	429
70.10	430	=== 2.6.2 Unix TimeStamp ===
62.5	431
	432
71.3	433	DDS45-LB uses Unix TimeStamp format based on
62.5	434
	435	[[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"]]
	436
	437	User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
	438
	439	Below is the converter example
	440
	441	[[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-20220523001219-12.png?width=720&height=298&rev=1.1\|\|alt="图片-20220523001219-12.png" height="298" width="720"]]
	442
	443
	444	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	445
	446
70.10	447	=== 2.6.3 Set Device Time ===
62.5	448
	449
	450	User need to set (% style="color:blue" %)SYNCMOD=1(%%) to enable sync time via MAC command.
	451
71.4	452	Once DDS45-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DDS45-LB. If DDS45-LB fails to get the time from the server, DDS45-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
62.5	453
	454	(% 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.
	455
	456
70.10	457	=== 2.6.4 Poll sensor value ===
62.5	458
	459
	460	Users can poll sensor values based on timestamps. Below is the downlink command.
	461
	462	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
	463	\|(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)Downlink Command to poll Open/Close status (0x31)
	464	\|(% style="width:58px" %)1byte\|(% style="width:127px" %)4bytes\|(% style="width:124px" %)4bytes\|(% style="width:114px" %)1byte
	465	\|(% style="width:58px" %)31\|(% style="width:127px" %)Timestamp start\|(% style="width:124px" %)Timestamp end\|(% style="width:114px" %)Uplink Interval
	466
	467	(((
	468	Timestamp start and Timestamp end-use Unix TimeStamp format as mentioned above. Devices will reply with all data logs during this period, using the uplink interval.
	469	)))
	470
	471	(((
64.8	472	For example, downlink command [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/CPL01%20LoRaWAN%20Outdoor%20PulseContact%20%20Sensor%20Manual/WebHome/image-20220518162852-1.png?rev=1.1\|\|alt="image-20220518162852-1.png"]]
62.5	473	)))
	474
	475	(((
	476	Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
	477	)))
	478
	479	(((
71.3	480	Uplink Internal =5s，means DDS45-LB will send one packet every 5s. range 5~~255s.
62.5	481	)))
	482
	483
70.10	484	== 2.7 Frequency Plans ==
1.1	485
	486
71.3	487	The DDS45-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.
1.1	488
	489	[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
	490
	491
71.3	492	= 3. Configure DDS45-LB =
1.1	493
16.4	494	== 3.1 Configure Methods ==
1.1	495
	496
71.3	497	DDS45-LB supports below configure method:
1.1	498
	499	* AT Command via Bluetooth Connection (Recommended): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
67.20	500
11.1	501	* AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
67.20	502
1.1	503	* LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
	504
73.9	505
1.1	506	== 3.2 General Commands ==
	507
	508
	509	These commands are to configure:
	510
	511	* General system settings like: uplink interval.
67.20	512
1.1	513	* LoRaWAN protocol & radio related command.
	514
	515	They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
	516
	517	[[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/]]
	518
	519
71.3	520	== 3.3 Commands special design for DDS45-LB ==
1.1	521
	522
71.3	523	These commands only valid for DDS45-LB, as below:
1.1	524
	525
	526	=== 3.3.1 Set Transmit Interval Time ===
	527
	528
62.5	529	(((
1.1	530	Feature: Change LoRaWAN End Node Transmit Interval.
62.5	531	)))
	532
	533	(((
1.1	534	(% style="color:blue" %)AT Command: AT+TDC
62.5	535	)))
1.1	536
14.34	537	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	538	\|=(% 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
1.1	539	\|(% style="width:156px" %)AT+TDC=?\|(% style="width:137px" %)Show current transmit Interval\|(((
	540	30000
	541	OK
	542	the interval is 30000ms = 30s
	543	)))
	544	\|(% style="width:156px" %)AT+TDC=60000\|(% style="width:137px" %)Set Transmit Interval\|(((
	545	OK
	546	Set transmit interval to 60000ms = 60 seconds
	547	)))
	548
62.5	549	(((
1.1	550	(% style="color:blue" %)Downlink Command: 0x01
62.5	551	)))
1.1	552
62.5	553	(((
1.1	554	Format: Command Code (0x01) followed by 3 bytes time value.
62.5	555	)))
1.1	556
62.5	557	(((
1.1	558	If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
62.5	559	)))
1.1	560
62.5	561	* (((
	562	Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	563	)))
	564	* (((
73.8	565	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
73.7	566	)))
70.29	567
	568
70.11	569	=== 3.3.2 Set Interrupt Mode ===
62.5	570
	571
43.1	572	Feature, Set Interrupt mode for PA8 of pin.
1.1	573
46.1	574	When AT+INTMOD=0 is set, PA8 is used as a digital input port.
	575
1.1	576	(% style="color:blue" %)AT Command: AT+INTMOD
	577
14.34	578	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	579	\|=(% 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
1.1	580	\|(% style="width:154px" %)AT+INTMOD=?\|(% style="width:196px" %)Show current interrupt mode\|(% style="width:157px" %)(((
	581	0
	582	OK
	583	the mode is 0 =Disable Interrupt
	584	)))
	585	\|(% style="width:154px" %)AT+INTMOD=2\|(% style="width:196px" %)(((
	586	Set Transmit Interval
	587	0. (Disable Interrupt),
	588	~1. (Trigger by rising and falling edge)
	589	2. (Trigger by falling edge)
	590	3. (Trigger by rising edge)
	591	)))\|(% style="width:157px" %)OK
	592
	593	(% style="color:blue" %)Downlink Command: 0x06
	594
	595	Format: Command Code (0x06) followed by 3 bytes.
	596
	597	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	598
	599	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
62.6	600
1.1	601	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	602
73.7	603
16.4	604	= 4. Battery & Power Consumption =
14.45	605
1.1	606
71.3	607	DDS45-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
1.1	608
	609	[[Battery Info & Power Consumption Analyze>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
	610
	611
16.4	612	= 5. OTA Firmware update =
1.1	613
	614
13.1	615	(% class="wikigeneratedid" %)
71.4	616	User can change firmware DDS45-LB to:
1.1	617
13.1	618	* Change Frequency band/ region.
62.7	619
13.1	620	* Update with new features.
62.7	621
13.1	622	* Fix bugs.
1.1	623
73.7	624	Firmware and changelog can be downloaded from : [[Firmware download link>>url:https://www.dropbox.com/sh/a5ue0nfrzqy9nz6/AABbvlATosDJKDwBmbirVbMYa?dl=0]]
1.1	625
31.1	626	Methods to Update Firmware:
1.1	627
70.18	628	* (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/]]
62.7	629
70.18	630	* 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]].
1.1	631
73.7	632
31.1	633	= 6. FAQ =
1.1	634
71.4	635	== 6.1 What is the frequency plan for DDS45-LB? ==
1.1	636
62.7	637
71.4	638	DDS45-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"]]
62.7	639
1.1	640
71.4	641	== 6.2 Can I use DDS45-LB in condensation environment? ==
1.1	642
	643
71.4	644	DDS45-LB is not suitable to be used in condensation environment. Condensation on the DDS45-LB probe will affect the reading and always got 0.
70.14	645
	646
	647	= 7. Trouble Shooting =
	648
	649	== 7.1 Why I can't join TTN V3 in US915 / AU915 bands? ==
	650
	651
	652	It is due to channel mapping. Please see below link: [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome\|\|anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
	653
	654
	655	== 7.2 AT Command input doesn't work ==
	656
	657
	658	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.
	659
	660
	661	== 7.3 Why does the sensor reading show 0 or "No sensor" ==
	662
	663
	664	~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
	665
	666	2. Sensor wiring is disconnected
	667
	668	3. Not using the correct decoder
	669
	670
70.17	671	== 7.4 Abnormal readings The gap between multiple readings is too large or the gap between the readings and the actual value is too large ==
70.14	672
	673
	674	1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
	675
	676	2) Does it change with temperature, temperature will affect its measurement
	677
	678	3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
	679
	680	downlink command: (% style="color:blue" %)F1 01(%%), AT command: (% style="color:blue" %)AT+DDEBUG=1
	681
	682	4) After entering the debug mode, it will send 20 pieces of data at a time, and you can send its uplink to us for analysis
	683
70.17	684	[[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-20230113135125-2.png?width=1057&height=136&rev=1.1\|\|alt="image-20230113135125-2.png"]]
70.14	685
	686
	687	Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
	688
	689	Please send the data to us for check.
	690
	691
	692	= 8. Order Info =
	693
	694
71.4	695	Part Number: (% style="color:blue" %)DDS45-LB-XXX
70.14	696
70.12	697	(% style="color:red" %)XXX(%%): The default frequency band
1.1	698
38.1	699	* (% style="color:red" %)AS923(%%): LoRaWAN AS923 band
1.1	700
38.1	701	* (% style="color:red" %)AU915(%%): LoRaWAN AU915 band
1.1	702
38.1	703	* (% style="color:red" %)EU433(%%): LoRaWAN EU433 band
1.1	704
38.1	705	* (% style="color:red" %)EU868(%%): LoRaWAN EU868 band
1.1	706
38.1	707	* (% style="color:red" %)KR920(%%): LoRaWAN KR920 band
1.1	708
38.1	709	* (% style="color:red" %)US915(%%): LoRaWAN US915 band
1.1	710
38.1	711	* (% style="color:red" %)IN865(%%): LoRaWAN IN865 band
1.1	712
38.1	713	* (% style="color:red" %)CN470(%%): LoRaWAN CN470 band
1.1	714
73.8	715
70.14	716	= 9. Packing Info =
67.11	717
	718
39.1	719	(% style="color:#037691" %)Package Includes:
1.1	720
71.4	721	* DDS45-LB LoRaWAN Distance Detection Sensor x 1
1.1	722
39.1	723	(% style="color:#037691" %)Dimension and weight:
1.1	724
31.1	725	* Device Size: cm
1.1	726
31.1	727	* Device Weight: g
1.1	728
31.1	729	* Package Size / pcs : cm
1.1	730
31.1	731	* Weight / pcs : g
1.1	732
73.8	733
70.14	734	= 10. Support =
	735
	736
31.1	737	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
39.6	738
	739	* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[Support@dragino.cc>>mailto:Support@dragino.cc]].

Wiki source code of DDS20-LB -- LoRaWAN Ultrasonic Liquid Level Sensor User Manual

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