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

Version 76.1 by Xiaoling on 2023/06/13 14:01

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26.1	1	(% style="text-align:center" %)
75.2	2	[[image:image-20230613133716-2.png\|\|height="717" width="717"]]
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31.2	11	Table of Contents：
30.1	12
1.1	13	{{toc/}}
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	19
31.1	20	= 1. Introduction =
1.1	21
75.4	22	== 1.1 What is LoRaWAN Ultrasonic liquid level Sensor ==
1.1	23
39.6	24
75.7	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.
1.1	26
75.6	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.
1.1	28
75.5	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.
1.1	30
75.3	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.
62.4	32
75.3	33	DDS20-LB (% style="color:blue" %)supports BLE configure(%%) and (% style="color:blue" %)wireless OTA update(%%) which make user easy to use.
1.1	34
75.3	35	DDS20-LB is powered by (% style="color:blue" %)8500mAh Li-SOCI2 battery(%%), it is designed for long term use up to 5 years.
1.1	36
75.3	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
73.2	39	[[image:image-20230613102459-3.png\|\|height="476" width="855"]]
1.1	40
64.2	41
1.1	42	== 1.2 Features ==
	43
39.6	44
1.1	45	* LoRaWAN 1.0.3 Class A
62.4	46	* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
1.1	47	* Ultra-low power consumption
70.5	48	* Distance Detection by Ultrasonic technology
73.3	49	* Flat object range 30mm - 4500mm
70.5	50	* Accuracy: ±(1cm+S*0.3%) (S: Distance)
73.3	51	* Measure Angle: 60°
70.5	52	* Cable Length : 25cm
1.1	53	* Support Bluetooth v5.1 and LoRaWAN remote configure
	54	* Support wireless OTA update firmware
70.5	55	* AT Commands to change parameters
1.1	56	* Downlink to change configure
70.5	57	* IP66 Waterproof Enclosure
1.1	58	* 8500mAh Battery for long term use
	59
73.9	60
1.1	61	== 1.3 Specification ==
	62
	63
70.28	64	(% style="color:#037691" %)Common DC Characteristics:
70.6	65
70.28	66	* Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
	67	* Operating Temperature: -40 ~~ 85°C
	68
	69	(% style="color:#037691" %)LoRa Spec:
	70
	71	* Frequency Range, Band 1 (HF): 862 ~~ 1020 Mhz
	72	* Max +22 dBm constant RF output vs.
	73	* RX sensitivity: down to -139 dBm.
	74	* Excellent blocking immunity
	75
	76	(% style="color:#037691" %)Battery:
	77
	78	* Li/SOCI2 un-chargeable battery
	79	* Capacity: 8500mAh
	80	* Self-Discharge: <1% / Year @ 25°C
	81	* Max continuously current: 130mA
	82	* Max boost current: 2A, 1 second
	83
	84	(% style="color:#037691" %)Power Consumption
	85
	86	* Sleep Mode: 5uA @ 3.3v
	87	* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
	88
73.9	89
70.28	90	== 1.4 Rated environmental conditions ==
	91
	92
70.6	93	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
	94	\|(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)Item\|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)(((
	95	Minimum value
	96	)))\|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
	97	Typical value
	98	)))\|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)(((
	99	Maximum value
	100	)))\|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)Unit\|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)Remarks
	101	\|(% style="width:174px" %)Storage temperature\|(% style="width:86px" %)-25\|(% style="width:66px" %)25\|(% style="width:90px" %)80\|(% style="width:48px" %)℃\|(% style="width:203px" %)
	102	\|(% style="width:174px" %)Storage humidity\|(% style="width:86px" %) \|(% style="width:66px" %)65%\|(% style="width:90px" %)90%\|(% style="width:48px" %)RH\|(% style="width:203px" %)(1)
	103	\|(% style="width:174px" %)Operating temperature\|(% style="width:86px" %)-15\|(% style="width:66px" %)25\|(% style="width:90px" %)60\|(% style="width:48px" %)℃\|(% style="width:203px" %)
	104	\|(% style="width:174px" %)Working humidity\|(% style="width:86px" %)(((
	105
	106
	107
	108	)))\|(% style="width:66px" %)65%\|(% style="width:90px" %)80%\|(% style="width:48px" %)RH\|(% style="width:203px" %)(1)
	109
	110	(((
70.20	111	(% style="color:red" %)Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);
70.6	112
70.20	113	(% 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	114
	115
	116	)))
	117
70.28	118	== 1.5 Effective measurement range Reference beam pattern ==
1.1	119
	120
70.19	121	(% 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	122
70.6	123	[[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	124
70.6	125
70.19	126	(% 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	127
	128	[[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"]]
	129
	130
70.28	131	== 1.6 Applications ==
70.6	132
	133
	134	* Horizontal distance measurement
	135	* Liquid level measurement
	136	* Parking management system
	137	* Object proximity and presence detection
	138	* Intelligent trash can management system
	139	* Robot obstacle avoidance
	140	* Automatic control
	141	* Sewer
	142	* Bottom water level monitoring
	143
73.9	144
70.28	145	== 1.7 Sleep mode and working mode ==
70.6	146
	147
1.1	148	(% 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.
	149
	150	(% 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.
	151
	152
70.28	153	== 1.8 Button & LEDs ==
1.1	154
	155
6.1	156	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
1.1	157
	158
14.13	159	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
14.11	160	\|=(% 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	161	\|(% style="width:167px" %)Pressing ACT between 1s < time < 3s\|(% style="width:117px" %)Send an uplink\|(% style="width:225px" %)(((
	162	If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)blue led (%%)will blink once.
	163	Meanwhile, BLE module will be active and user can connect via BLE to configure device.
	164	)))
	165	\|(% style="width:167px" %)Pressing ACT for more than 3s\|(% style="width:117px" %)Active Device\|(% style="width:225px" %)(((
	166	(% 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.
	167	(% style="color:green" %)Green led(%%) will solidly turn on for 5 seconds after joined in network.
	168	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.
	169	)))
6.1	170	\|(% 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	171
73.9	172
70.28	173	== 1.9 BLE connection ==
1.1	174
	175
71.3	176	DDS45-LB support BLE remote configure.
1.1	177
	178
	179	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:
	180
	181	* Press button to send an uplink
	182	* Press button to active device.
	183	* Device Power on or reset.
	184
	185	If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
	186
	187
70.28	188	== 1.10 Pin Definitions ==
1.1	189
43.1	190	[[image:image-20230523174230-1.png]]
1.1	191
43.1	192
70.28	193	== 1.11 Mechanical ==
67.4	194
	195
6.1	196	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
1.1	197
	198
6.1	199	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
1.1	200
	201
6.1	202	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
1.1	203
	204
70.20	205	(% style="color:blue" %)Probe Mechanical:
70.10	206
73.4	207	[[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	208
	209
71.3	210	= 2. Configure DDS45-LB to connect to LoRaWAN network =
67.4	211
1.1	212	== 2.1 How it works ==
	213
	214
71.3	215	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	216
64.2	217	(% style="display:none" %) (%%)
1.1	218
	219	== 2.2 Quick guide to connect to LoRaWAN server (OTAA) ==
	220
	221
	222	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.
	223
62.5	224	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	225
73.2	226	[[image:image-20230613102426-2.png\|\|height="476" width="855"]](% style="display:none" %)
1.1	227
64.2	228
71.3	229	(% style="color:blue" %)Step 1:(%%) Create a device in TTN with the OTAA keys from DDS45-LB.
1.1	230
71.3	231	Each DDS45-LB is shipped with a sticker with the default device EUI as below:
1.1	232
30.1	233	[[image:image-20230426084152-1.png\|\|alt="图片-20230426084152-1.png" height="233" width="502"]]
1.1	234
	235
	236	You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
	237
	238
	239	(% style="color:blue" %)Register the device
	240
14.13	241	[[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	242
	243
	244	(% style="color:blue" %)Add APP EUI and DEV EUI
	245
30.1	246	[[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	247
	248
	249	(% style="color:blue" %)Add APP EUI in the application
	250
	251
30.1	252	[[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	253
	254
	255	(% style="color:blue" %)Add APP KEY
	256
30.1	257	[[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	258
	259
71.3	260	(% style="color:blue" %)Step 2:(%%) Activate on DDS45-LB
1.1	261
	262
71.3	263	Press the button for 5 seconds to activate the DDS45-LB.
6.1	264
1.1	265	(% 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.
	266
	267	After join success, it will start to upload messages to TTN and you can see the messages in the panel.
	268
	269
70.10	270	== 2.3 Uplink Payload ==
1.1	271
	272
62.5	273	(((
71.3	274	DDS45-LB will uplink payload via LoRaWAN with below payload format:
62.5	275	)))
1.1	276
62.5	277	(((
70.21	278	Uplink payload includes in total 8 bytes.
62.5	279	)))
1.1	280
67.7	281	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
70.10	282	\|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
	283	Size(bytes)
	284	)))\|=(% 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
	285	\|(% style="width:62.5px" %)Value\|(% style="width:62.5px" %)[[BAT>>\|\|anchor="H2.3.1A0BatteryInfo"]]\|(((
	286	[[Distance>>\|\|anchor="H2.3.2A0Distance"]]
	287	(unit: mm)
	288	)))\|[[Digital Interrupt (Optional)>>\|\|anchor="H2.3.3A0InterruptPin"]]\|(((
	289	[[Temperature (Optional )>>\|\|anchor="H2.3.4A0DS18B20Temperaturesensor"]]
	290	)))\|[[Sensor Flag>>\|\|anchor="H2.3.5A0SensorFlag"]]
1.1	291
70.10	292	[[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	293
	294
70.10	295	=== 2.3.1 Battery Info ===
1.1	296
	297
71.3	298	Check the battery voltage for DDS45-LB.
1.1	299
70.10	300	Ex1: 0x0B45 = 2885mV
1.1	301
70.10	302	Ex2: 0x0B49 = 2889mV
46.1	303
1.1	304
70.10	305	=== 2.3.2 Distance ===
67.7	306
	307
70.10	308	(((
73.5	309	Get the distance. Flat object range 30mm - 4500mm.
62.5	310	)))
1.1	311
62.5	312	(((
73.5	313	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	314
73.5	315	(% style="color:blue" %)0B05(H) = 2821 (D) = 2821 mm.
62.5	316	)))
1.1	317
70.10	318	* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
73.5	319	* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
67.7	320
73.6	321
70.10	322	=== 2.3.3 Interrupt Pin ===
67.7	323
10.1	324
70.22	325	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	326
70.10	327	Example:
1.1	328
70.10	329	0x00: Normal uplink packet.
1.1	330
70.10	331	0x01: Interrupt Uplink Packet.
1.1	332
	333
70.10	334	=== 2.3.4 DS18B20 Temperature sensor ===
62.5	335
1.1	336
70.10	337	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	338
70.10	339	Example:
1.1	340
70.10	341	If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
39.5	342
70.10	343	If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
1.1	344
	345
70.10	346	=== 2.3.5 Sensor Flag ===
1.1	347
	348
55.1	349	(((
70.10	350	0x01: Detect Ultrasonic Sensor
55.1	351	)))
	352
	353	(((
70.10	354	0x00: No Ultrasonic Sensor
55.1	355	)))
46.1	356
	357
70.10	358	=== 2.3.6 Decode payload in The Things Network ===
1.1	359
55.1	360
70.10	361	While using TTN network, you can add the payload format to decode the payload.
1.1	362
70.10	363	[[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	364
70.10	365	The payload decoder function for TTN V3 is here:
1.1	366
62.5	367	(((
71.3	368	DDS45-LB TTN V3 Payload Decoder: [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
62.5	369	)))
1.1	370
	371
70.10	372	== 2.4 Uplink Interval ==
1.1	373
	374
71.3	375	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	376
70.10	377
	378	== 2.5 Show Data in DataCake IoT Server ==
	379
	380
62.5	381	(((
70.10	382	[[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	383	)))
1.1	384
	385
62.5	386	(((
70.10	387	(% style="color:blue" %)Step 1(%%): Be sure that your device is programmed and properly connected to the network at this time.
62.5	388	)))
1.1	389
62.5	390	(((
70.10	391	(% 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	392	)))
14.26	393
55.1	394
70.10	395	[[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	396
	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/1654592800389-571.png?rev=1.1\|\|alt="1654592800389-571.png"]]
1.1	399
	400
70.10	401	(% style="color:blue" %)Step 3(%%): Create an account or log in Datacake.
1.1	402
71.3	403	(% style="color:blue" %)Step 4(%%): Search the DDS45-LB and add DevEUI.
1.1	404
70.10	405	[[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	406
1.1	407
70.10	408	After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
1.1	409
70.10	410	[[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	411
	412
	413
70.10	414	== 2.6 Datalog Feature ==
1.1	415
	416
71.3	417	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	418
	419
70.10	420	=== 2.6.1 Ways to get datalog via LoRaWAN ===
62.5	421
	422
71.3	423	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	424
	425	* (((
71.3	426	a) DDS45-LB will do an ACK check for data records sending to make sure every data arrive server.
62.5	427	)))
	428	* (((
71.3	429	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	430	)))
	431
	432	Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
	433
	434	[[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"]]
	435
	436
70.10	437	=== 2.6.2 Unix TimeStamp ===
62.5	438
	439
71.3	440	DDS45-LB uses Unix TimeStamp format based on
62.5	441
	442	[[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"]]
	443
	444	User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
	445
	446	Below is the converter example
	447
	448	[[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"]]
	449
	450
	451	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	452
	453
70.10	454	=== 2.6.3 Set Device Time ===
62.5	455
	456
	457	User need to set (% style="color:blue" %)SYNCMOD=1(%%) to enable sync time via MAC command.
	458
71.4	459	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	460
	461	(% 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.
	462
	463
70.10	464	=== 2.6.4 Poll sensor value ===
62.5	465
	466
	467	Users can poll sensor values based on timestamps. Below is the downlink command.
	468
	469	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
	470	\|(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)Downlink Command to poll Open/Close status (0x31)
	471	\|(% style="width:58px" %)1byte\|(% style="width:127px" %)4bytes\|(% style="width:124px" %)4bytes\|(% style="width:114px" %)1byte
	472	\|(% style="width:58px" %)31\|(% style="width:127px" %)Timestamp start\|(% style="width:124px" %)Timestamp end\|(% style="width:114px" %)Uplink Interval
	473
	474	(((
	475	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.
	476	)))
	477
	478	(((
64.8	479	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	480	)))
	481
	482	(((
	483	Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
	484	)))
	485
	486	(((
71.3	487	Uplink Internal =5s，means DDS45-LB will send one packet every 5s. range 5~~255s.
62.5	488	)))
	489
	490
70.10	491	== 2.7 Frequency Plans ==
1.1	492
	493
71.3	494	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	495
	496	[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
	497
	498
71.3	499	= 3. Configure DDS45-LB =
1.1	500
16.4	501	== 3.1 Configure Methods ==
1.1	502
	503
71.3	504	DDS45-LB supports below configure method:
1.1	505
	506	* AT Command via Bluetooth Connection (Recommended): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
67.20	507
11.1	508	* 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	509
1.1	510	* LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
	511
73.9	512
1.1	513	== 3.2 General Commands ==
	514
	515
	516	These commands are to configure:
	517
	518	* General system settings like: uplink interval.
67.20	519
1.1	520	* LoRaWAN protocol & radio related command.
	521
	522	They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
	523
	524	[[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/]]
	525
	526
71.3	527	== 3.3 Commands special design for DDS45-LB ==
1.1	528
	529
71.3	530	These commands only valid for DDS45-LB, as below:
1.1	531
	532
	533	=== 3.3.1 Set Transmit Interval Time ===
	534
	535
62.5	536	(((
1.1	537	Feature: Change LoRaWAN End Node Transmit Interval.
62.5	538	)))
	539
	540	(((
1.1	541	(% style="color:blue" %)AT Command: AT+TDC
62.5	542	)))
1.1	543
14.34	544	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	545	\|=(% 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	546	\|(% style="width:156px" %)AT+TDC=?\|(% style="width:137px" %)Show current transmit Interval\|(((
	547	30000
	548	OK
	549	the interval is 30000ms = 30s
	550	)))
	551	\|(% style="width:156px" %)AT+TDC=60000\|(% style="width:137px" %)Set Transmit Interval\|(((
	552	OK
	553	Set transmit interval to 60000ms = 60 seconds
	554	)))
	555
62.5	556	(((
1.1	557	(% style="color:blue" %)Downlink Command: 0x01
62.5	558	)))
1.1	559
62.5	560	(((
1.1	561	Format: Command Code (0x01) followed by 3 bytes time value.
62.5	562	)))
1.1	563
62.5	564	(((
1.1	565	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	566	)))
1.1	567
62.5	568	* (((
	569	Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	570	)))
	571	* (((
73.8	572	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
73.7	573	)))
70.29	574
	575
70.11	576	=== 3.3.2 Set Interrupt Mode ===
62.5	577
	578
43.1	579	Feature, Set Interrupt mode for PA8 of pin.
1.1	580
46.1	581	When AT+INTMOD=0 is set, PA8 is used as a digital input port.
	582
1.1	583	(% style="color:blue" %)AT Command: AT+INTMOD
	584
14.34	585	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	586	\|=(% 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	587	\|(% style="width:154px" %)AT+INTMOD=?\|(% style="width:196px" %)Show current interrupt mode\|(% style="width:157px" %)(((
	588	0
	589	OK
	590	the mode is 0 =Disable Interrupt
	591	)))
	592	\|(% style="width:154px" %)AT+INTMOD=2\|(% style="width:196px" %)(((
	593	Set Transmit Interval
	594	0. (Disable Interrupt),
	595	~1. (Trigger by rising and falling edge)
	596	2. (Trigger by falling edge)
	597	3. (Trigger by rising edge)
	598	)))\|(% style="width:157px" %)OK
	599
	600	(% style="color:blue" %)Downlink Command: 0x06
	601
	602	Format: Command Code (0x06) followed by 3 bytes.
	603
	604	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	605
	606	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
62.6	607
1.1	608	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	609
73.7	610
16.4	611	= 4. Battery & Power Consumption =
14.45	612
1.1	613
71.3	614	DDS45-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
1.1	615
	616	[[Battery Info & Power Consumption Analyze>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
	617
	618
16.4	619	= 5. OTA Firmware update =
1.1	620
	621
13.1	622	(% class="wikigeneratedid" %)
71.4	623	User can change firmware DDS45-LB to:
1.1	624
13.1	625	* Change Frequency band/ region.
62.7	626
13.1	627	* Update with new features.
62.7	628
13.1	629	* Fix bugs.
1.1	630
73.7	631	Firmware and changelog can be downloaded from : [[Firmware download link>>url:https://www.dropbox.com/sh/a5ue0nfrzqy9nz6/AABbvlATosDJKDwBmbirVbMYa?dl=0]]
1.1	632
31.1	633	Methods to Update Firmware:
1.1	634
70.18	635	* (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	636
70.18	637	* 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	638
73.7	639
31.1	640	= 6. FAQ =
1.1	641
71.4	642	== 6.1 What is the frequency plan for DDS45-LB? ==
1.1	643
62.7	644
71.4	645	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	646
1.1	647
71.4	648	== 6.2 Can I use DDS45-LB in condensation environment? ==
1.1	649
	650
71.4	651	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	652
	653
	654	= 7. Trouble Shooting =
	655
	656	== 7.1 Why I can't join TTN V3 in US915 / AU915 bands? ==
	657
	658
	659	It is due to channel mapping. Please see below link: [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome\|\|anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
	660
	661
	662	== 7.2 AT Command input doesn't work ==
	663
	664
	665	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.
	666
	667
	668	== 7.3 Why does the sensor reading show 0 or "No sensor" ==
	669
	670
	671	~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
	672
	673	2. Sensor wiring is disconnected
	674
	675	3. Not using the correct decoder
	676
	677
70.17	678	== 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	679
	680
	681	1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
	682
	683	2) Does it change with temperature, temperature will affect its measurement
	684
	685	3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
	686
	687	downlink command: (% style="color:blue" %)F1 01(%%), AT command: (% style="color:blue" %)AT+DDEBUG=1
	688
	689	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
	690
70.17	691	[[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	692
	693
	694	Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
	695
	696	Please send the data to us for check.
	697
	698
	699	= 8. Order Info =
	700
	701
71.4	702	Part Number: (% style="color:blue" %)DDS45-LB-XXX
70.14	703
70.12	704	(% style="color:red" %)XXX(%%): The default frequency band
1.1	705
38.1	706	* (% style="color:red" %)AS923(%%): LoRaWAN AS923 band
1.1	707
38.1	708	* (% style="color:red" %)AU915(%%): LoRaWAN AU915 band
1.1	709
38.1	710	* (% style="color:red" %)EU433(%%): LoRaWAN EU433 band
1.1	711
38.1	712	* (% style="color:red" %)EU868(%%): LoRaWAN EU868 band
1.1	713
38.1	714	* (% style="color:red" %)KR920(%%): LoRaWAN KR920 band
1.1	715
38.1	716	* (% style="color:red" %)US915(%%): LoRaWAN US915 band
1.1	717
38.1	718	* (% style="color:red" %)IN865(%%): LoRaWAN IN865 band
1.1	719
38.1	720	* (% style="color:red" %)CN470(%%): LoRaWAN CN470 band
1.1	721
73.8	722
70.14	723	= 9. Packing Info =
67.11	724
	725
39.1	726	(% style="color:#037691" %)Package Includes:
1.1	727
71.4	728	* DDS45-LB LoRaWAN Distance Detection Sensor x 1
1.1	729
39.1	730	(% style="color:#037691" %)Dimension and weight:
1.1	731
31.1	732	* Device Size: cm
1.1	733
31.1	734	* Device Weight: g
1.1	735
31.1	736	* Package Size / pcs : cm
1.1	737
31.1	738	* Weight / pcs : g
1.1	739
73.8	740
70.14	741	= 10. Support =
	742
	743
31.1	744	* 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	745
	746	* 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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