Wiki source code of LDS12-LB -- LoRaWAN LiDAR ToF Distance Sensor User Manual

Version 79.21 by Xiaoling on 2023/06/14 15:33

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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/}}
	14
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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
77.2	39	[[image:image-20230613140115-3.png\|\|height="453" width="800"]]
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
77.3	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)
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
79.15	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
79.18	89
77.4	90	== 1.4 Suitable Container & Liquid ==
70.28	91
70.6	92
77.4	93	* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
	94	* Container shape is regular, and surface is smooth.
	95	* Container Thickness:
	96	** Pure metal material. 2~~8mm, best is 3~~5mm
	97	** Pure non metal material: <10 mm
79.15	98	* Pure liquid without irregular deposition.
70.6	99
79.18	100
79.15	101	(% style="display:none" %)
	102
77.4	103	== 1.5 Install DDS20-LB ==
	104
	105
79.18	106	(% style="color:blue" %)Step 1(%%): Choose the installation point.
77.4	107
	108	DDS20-LB (% style="color:red" %)MUST(%%) be installed on the container bottom middle position.
	109
79.2	110	[[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"]]
77.4	111
	112
70.6	113	(((
79.18	114	(% style="color:blue" %)Step 2(%%): Polish the installation point.
77.4	115	)))
70.6	116
77.4	117	(((
	118	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.
	119	)))
70.6	120
79.2	121	[[image:image-20230613143052-5.png]]
77.4	122
	123
	124	No polish needed if the container is shine metal surface without paint or non-metal container.
	125
79.2	126	[[image:image-20230613143125-6.png]]
77.4	127
	128
	129	(((
79.18	130	(% style="color:blue" %)Step3: (%%)Test the installation point.
70.6	131	)))
	132
77.4	133	(((
	134	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.
	135	)))
1.1	136
77.4	137	(((
	138	It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB won't detect the liquid level.
	139	)))
62.4	140
77.4	141	(((
	142	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.
	143	)))
70.6	144
	145
77.4	146	(((
79.16	147	(% style="color:blue" %)LED Status:
77.4	148	)))
70.6	149
77.4	150	* (((
79.17	151	Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
77.4	152	)))
	153
	154	* (((
	155	(% 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.
	156	)))
	157	* (((
	158	(% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
	159	)))
	160
	161	(((
	162	LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
	163	)))
	164
	165
	166	(((
79.17	167	(% style="color:red" %)Note :(%%) (% style="color:blue" %)Ultrasonic coupling paste(%%)(% style="color:blue" %) (%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
77.4	168	)))
	169
	170
	171	(((
79.18	172	(% style="color:blue" %)Step4: (%%)Install use Epoxy ab glue.
77.4	173	)))
	174
	175	(((
	176	Prepare Eproxy AB glue.
	177	)))
	178
	179	(((
	180	Put Eproxy AB glue in the sensor and press it hard on the container installation point.
	181	)))
	182
	183	(((
	184	Reset DDS20-LB and see if the BLUE LED is slowly blinking.
	185	)))
	186
79.4	187	[[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"]]
77.4	188
	189
	190	(((
79.17	191	(% style="color:red" %)Note :
	192
	193	(% style="color:red" %)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.
77.4	194	)))
	195
	196	(((
79.17	197	(% style="color:red" %)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.
77.4	198	)))
	199
	200
70.28	201	== 1.6 Applications ==
70.6	202
	203
79.18	204	* Smart liquid control solution
70.6	205
79.18	206	* Smart liquefied gas solution
70.6	207
79.18	208
77.4	209	== 1.7 Precautions ==
	210
	211
	212	* 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.
	213
	214	* 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.
	215
79.18	216	* 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.
77.4	217
79.18	218	(% style="display:none" %)
	219
77.4	220	== 1.8 Sleep mode and working mode ==
	221
	222
1.1	223	(% 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.
	224
	225	(% 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.
	226
	227
77.4	228	== 1.9 Button & LEDs ==
1.1	229
	230
6.1	231	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
1.1	232
	233
14.13	234	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
14.11	235	\|=(% 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	236	\|(% style="width:167px" %)Pressing ACT between 1s < time < 3s\|(% style="width:117px" %)Send an uplink\|(% style="width:225px" %)(((
	237	If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)blue led (%%)will blink once.
	238	Meanwhile, BLE module will be active and user can connect via BLE to configure device.
	239	)))
	240	\|(% style="width:167px" %)Pressing ACT for more than 3s\|(% style="width:117px" %)Active Device\|(% style="width:225px" %)(((
	241	(% 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.
	242	(% style="color:green" %)Green led(%%) will solidly turn on for 5 seconds after joined in network.
	243	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.
	244	)))
6.1	245	\|(% 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	246
79.18	247
77.4	248	== 1.10 BLE connection ==
1.1	249
	250
79.2	251	DDS20-LB support BLE remote configure.
1.1	252
	253	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:
	254
	255	* Press button to send an uplink
	256	* Press button to active device.
	257	* Device Power on or reset.
	258
	259	If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
	260
	261
77.4	262	== 1.11 Pin Definitions ==
1.1	263
43.1	264	[[image:image-20230523174230-1.png]]
1.1	265
43.1	266
77.4	267	== 1.12 Mechanical ==
67.4	268
	269
6.1	270	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
1.1	271
	272
6.1	273	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
1.1	274
	275
6.1	276	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
1.1	277
	278
70.20	279	(% style="color:blue" %)Probe Mechanical:
70.10	280
79.2	281	[[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"]]
70.10	282
	283
79.2	284	[[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"]]
	285
	286
77.5	287	= 2. Configure DDS20-LB to connect to LoRaWAN network =
67.4	288
1.1	289	== 2.1 How it works ==
	290
	291
79.6	292	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.
1.1	293
64.2	294	(% style="display:none" %) (%%)
1.1	295
	296	== 2.2 Quick guide to connect to LoRaWAN server (OTAA) ==
	297
	298
	299	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.
	300
62.5	301	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	302
77.2	303	[[image:image-20230613140140-4.png\|\|height="453" width="800"]](% style="display:none" %)
1.1	304
64.2	305
79.6	306	(% style="color:blue" %)Step 1:(%%) Create a device in TTN with the OTAA keys from DDS20-LB.
1.1	307
79.6	308	Each DDS20-LB is shipped with a sticker with the default device EUI as below:
1.1	309
30.1	310	[[image:image-20230426084152-1.png\|\|alt="图片-20230426084152-1.png" height="233" width="502"]]
1.1	311
	312
	313	You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
	314
	315
	316	(% style="color:blue" %)Register the device
	317
14.13	318	[[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	319
	320
	321	(% style="color:blue" %)Add APP EUI and DEV EUI
	322
30.1	323	[[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	324
	325
	326	(% style="color:blue" %)Add APP EUI in the application
	327
	328
30.1	329	[[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	330
	331
	332	(% style="color:blue" %)Add APP KEY
	333
30.1	334	[[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	335
	336
79.6	337	(% style="color:blue" %)Step 2:(%%) Activate on DDS20-LB
1.1	338
	339
79.6	340	Press the button for 5 seconds to activate the DDS20-LB.
6.1	341
1.1	342	(% 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.
	343
	344	After join success, it will start to upload messages to TTN and you can see the messages in the panel.
	345
	346
70.10	347	== 2.3 Uplink Payload ==
1.1	348
	349
62.5	350	(((
79.6	351	DDS20-LB will uplink payload via LoRaWAN with below payload format:
62.5	352	)))
1.1	353
62.5	354	(((
70.21	355	Uplink payload includes in total 8 bytes.
62.5	356	)))
1.1	357
67.7	358	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
70.10	359	\|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
	360	Size(bytes)
	361	)))\|=(% 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
79.18	362	\|(% style="width:62.5px" %)Value\|(% style="width:62.5px" %)[[BAT>>\|\|anchor="H2.3.1A0BatteryInfo"]]\|(((
70.10	363	[[Distance>>\|\|anchor="H2.3.2A0Distance"]]
	364	(unit: mm)
	365	)))\|[[Digital Interrupt (Optional)>>\|\|anchor="H2.3.3A0InterruptPin"]]\|(((
	366	[[Temperature (Optional )>>\|\|anchor="H2.3.4A0DS18B20Temperaturesensor"]]
	367	)))\|[[Sensor Flag>>\|\|anchor="H2.3.5A0SensorFlag"]]
1.1	368
79.9	369	[[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"]]
1.1	370
	371
70.10	372	=== 2.3.1 Battery Info ===
1.1	373
	374
79.6	375	Check the battery voltage for DDS20-LB.
1.1	376
70.10	377	Ex1: 0x0B45 = 2885mV
1.1	378
70.10	379	Ex2: 0x0B49 = 2889mV
46.1	380
1.1	381
70.10	382	=== 2.3.2 Distance ===
67.7	383
	384
70.10	385	(((
79.9	386	Get the distance. Flat object range 20mm - 2000mm.
62.5	387	)))
1.1	388
62.5	389	(((
79.9	390	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" %)
14.22	391
79.9	392	(% style="color:blue" %)0605(H) = 1541 (D) = 1541 mm.
62.5	393	)))
1.1	394
70.10	395	* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
79.11	396
79.10	397	* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
67.7	398
79.19	399
70.10	400	=== 2.3.3 Interrupt Pin ===
67.7	401
10.1	402
70.22	403	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	404
70.10	405	Example:
1.1	406
70.10	407	0x00: Normal uplink packet.
1.1	408
70.10	409	0x01: Interrupt Uplink Packet.
1.1	410
	411
70.10	412	=== 2.3.4 DS18B20 Temperature sensor ===
62.5	413
1.1	414
70.10	415	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	416
70.10	417	Example:
1.1	418
70.10	419	If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
39.5	420
70.10	421	If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
1.1	422
	423
70.10	424	=== 2.3.5 Sensor Flag ===
1.1	425
	426
55.1	427	(((
70.10	428	0x01: Detect Ultrasonic Sensor
55.1	429	)))
	430
	431	(((
70.10	432	0x00: No Ultrasonic Sensor
55.1	433	)))
46.1	434
	435
70.10	436	=== 2.3.6 Decode payload in The Things Network ===
1.1	437
55.1	438
70.10	439	While using TTN network, you can add the payload format to decode the payload.
1.1	440
70.10	441	[[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	442
70.10	443	The payload decoder function for TTN V3 is here:
1.1	444
62.5	445	(((
79.6	446	DDS20-LB TTN V3 Payload Decoder: [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
62.5	447	)))
1.1	448
	449
70.10	450	== 2.4 Uplink Interval ==
1.1	451
	452
79.6	453	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"]]
1.1	454
70.10	455
	456	== 2.5 Show Data in DataCake IoT Server ==
	457
	458
62.5	459	(((
70.10	460	[[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	461	)))
1.1	462
	463
62.5	464	(((
70.10	465	(% style="color:blue" %)Step 1(%%): Be sure that your device is programmed and properly connected to the network at this time.
62.5	466	)))
1.1	467
62.5	468	(((
70.10	469	(% 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	470	)))
14.26	471
55.1	472
70.10	473	[[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	474
	475
70.10	476	[[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	477
	478
70.10	479	(% style="color:blue" %)Step 3(%%): Create an account or log in Datacake.
1.1	480
79.6	481	(% style="color:blue" %)Step 4(%%): Search the DDS20-LB and add DevEUI.
1.1	482
70.10	483	[[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	484
1.1	485
70.10	486	After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
1.1	487
70.10	488	[[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	489
	490
70.10	491	== 2.6 Datalog Feature ==
1.1	492
	493
79.6	494	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.
62.5	495
	496
70.10	497	=== 2.6.1 Ways to get datalog via LoRaWAN ===
62.5	498
	499
79.6	500	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.
62.5	501
	502	* (((
79.6	503	a) DDS20-LB will do an ACK check for data records sending to make sure every data arrive server.
62.5	504	)))
	505	* (((
79.6	506	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.
62.5	507	)))
	508
	509	Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
	510
	511	[[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"]]
	512
	513
70.10	514	=== 2.6.2 Unix TimeStamp ===
62.5	515
	516
79.6	517	DDS20-LB uses Unix TimeStamp format based on
62.5	518
	519	[[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"]]
	520
	521	User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
	522
	523	Below is the converter example
	524
	525	[[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"]]
	526
	527
	528	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	529
	530
70.10	531	=== 2.6.3 Set Device Time ===
62.5	532
	533
	534	User need to set (% style="color:blue" %)SYNCMOD=1(%%) to enable sync time via MAC command.
	535
79.6	536	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).
62.5	537
	538	(% 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.
	539
	540
70.10	541	=== 2.6.4 Poll sensor value ===
62.5	542
	543
	544	Users can poll sensor values based on timestamps. Below is the downlink command.
	545
	546	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
	547	\|(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)Downlink Command to poll Open/Close status (0x31)
	548	\|(% style="width:58px" %)1byte\|(% style="width:127px" %)4bytes\|(% style="width:124px" %)4bytes\|(% style="width:114px" %)1byte
	549	\|(% style="width:58px" %)31\|(% style="width:127px" %)Timestamp start\|(% style="width:124px" %)Timestamp end\|(% style="width:114px" %)Uplink Interval
	550
	551	(((
	552	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.
	553	)))
	554
	555	(((
64.8	556	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	557	)))
	558
	559	(((
	560	Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
	561	)))
	562
	563	(((
79.6	564	Uplink Internal =5s，means DDS20-LB will send one packet every 5s. range 5~~255s.
62.5	565	)))
	566
	567
70.10	568	== 2.7 Frequency Plans ==
1.1	569
	570
79.6	571	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.
1.1	572
	573	[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
	574
	575
79.6	576	= 3. Configure DDS20-LB =
1.1	577
16.4	578	== 3.1 Configure Methods ==
1.1	579
	580
79.6	581	DDS20-LB supports below configure method:
1.1	582
	583	* AT Command via Bluetooth Connection (Recommended): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
67.20	584
11.1	585	* 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	586
1.1	587	* LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
	588
79.19	589
1.1	590	== 3.2 General Commands ==
	591
	592
	593	These commands are to configure:
	594
	595	* General system settings like: uplink interval.
67.20	596
1.1	597	* LoRaWAN protocol & radio related command.
	598
	599	They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
	600
	601	[[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/]]
	602
	603
79.6	604	== 3.3 Commands special design for DDS20-LB ==
1.1	605
	606
79.6	607	These commands only valid for DDS20-LB, as below:
1.1	608
	609
	610	=== 3.3.1 Set Transmit Interval Time ===
	611
	612
62.5	613	(((
1.1	614	Feature: Change LoRaWAN End Node Transmit Interval.
62.5	615	)))
	616
	617	(((
1.1	618	(% style="color:blue" %)AT Command: AT+TDC
62.5	619	)))
1.1	620
14.34	621	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	622	\|=(% 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	623	\|(% style="width:156px" %)AT+TDC=?\|(% style="width:137px" %)Show current transmit Interval\|(((
	624	30000
	625	OK
	626	the interval is 30000ms = 30s
	627	)))
	628	\|(% style="width:156px" %)AT+TDC=60000\|(% style="width:137px" %)Set Transmit Interval\|(((
	629	OK
	630	Set transmit interval to 60000ms = 60 seconds
	631	)))
	632
62.5	633	(((
1.1	634	(% style="color:blue" %)Downlink Command: 0x01
62.5	635	)))
1.1	636
62.5	637	(((
1.1	638	Format: Command Code (0x01) followed by 3 bytes time value.
62.5	639	)))
1.1	640
62.5	641	(((
1.1	642	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	643	)))
1.1	644
62.5	645	* (((
	646	Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	647	)))
	648	* (((
73.8	649	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
79.19	650
	651
	652
73.7	653	)))
70.29	654
70.11	655	=== 3.3.2 Set Interrupt Mode ===
62.5	656
	657
43.1	658	Feature, Set Interrupt mode for PA8 of pin.
1.1	659
46.1	660	When AT+INTMOD=0 is set, PA8 is used as a digital input port.
	661
1.1	662	(% style="color:blue" %)AT Command: AT+INTMOD
	663
14.34	664	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	665	\|=(% 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	666	\|(% style="width:154px" %)AT+INTMOD=?\|(% style="width:196px" %)Show current interrupt mode\|(% style="width:157px" %)(((
	667	0
	668	OK
	669	the mode is 0 =Disable Interrupt
	670	)))
	671	\|(% style="width:154px" %)AT+INTMOD=2\|(% style="width:196px" %)(((
	672	Set Transmit Interval
	673	0. (Disable Interrupt),
	674	~1. (Trigger by rising and falling edge)
	675	2. (Trigger by falling edge)
	676	3. (Trigger by rising edge)
	677	)))\|(% style="width:157px" %)OK
	678
	679	(% style="color:blue" %)Downlink Command: 0x06
	680
	681	Format: Command Code (0x06) followed by 3 bytes.
	682
	683	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	684
	685	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
62.6	686
1.1	687	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	688
79.19	689
16.4	690	= 4. Battery & Power Consumption =
14.45	691
1.1	692
79.6	693	DDS20-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
1.1	694
	695	[[Battery Info & Power Consumption Analyze>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
	696
	697
16.4	698	= 5. OTA Firmware update =
1.1	699
	700
13.1	701	(% class="wikigeneratedid" %)
79.6	702	User can change firmware DDS20-LB to:
1.1	703
13.1	704	* Change Frequency band/ region.
62.7	705
13.1	706	* Update with new features.
62.7	707
13.1	708	* Fix bugs.
1.1	709
79.6	710	Firmware and changelog can be downloaded from : [[Firmware download link>>url:https://www.dropbox.com/sh/ph4uyz0rchflrnw/AADr1f_5Sg30804NItpfOQbla?dl=0]]
1.1	711
31.1	712	Methods to Update Firmware:
1.1	713
79.15	714	* (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	715
70.18	716	* 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	717
79.19	718
31.1	719	= 6. FAQ =
1.1	720
79.7	721	== 6.1 What is the frequency plan for DDS20-LB? ==
1.1	722
62.7	723
79.7	724	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"]]
62.7	725
1.1	726
79.7	727	== 6.2 Can I use DDS20-LB in condensation environment? ==
1.1	728
	729
79.7	730	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.
70.14	731
	732
	733	= 7. Trouble Shooting =
	734
	735	== 7.1 Why I can't join TTN V3 in US915 / AU915 bands? ==
	736
	737
	738	It is due to channel mapping. Please see below link: [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome\|\|anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
	739
	740
	741	== 7.2 AT Command input doesn't work ==
	742
	743
	744	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.
	745
	746
79.7	747	== 7.3 Why i always see 0x0000 or 0 for the distance value? ==
70.14	748
	749
79.7	750	(((
79.13	751	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.
70.14	752
79.7	753	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.
	754	)))
70.14	755
	756
	757	= 8. Order Info =
	758
	759
79.7	760	Part Number: (% style="color:blue" %)DDS20-LB-XXX
70.14	761
70.12	762	(% style="color:red" %)XXX(%%): The default frequency band
1.1	763
38.1	764	* (% style="color:red" %)AS923(%%): LoRaWAN AS923 band
1.1	765
38.1	766	* (% style="color:red" %)AU915(%%): LoRaWAN AU915 band
1.1	767
38.1	768	* (% style="color:red" %)EU433(%%): LoRaWAN EU433 band
1.1	769
38.1	770	* (% style="color:red" %)EU868(%%): LoRaWAN EU868 band
1.1	771
38.1	772	* (% style="color:red" %)KR920(%%): LoRaWAN KR920 band
1.1	773
38.1	774	* (% style="color:red" %)US915(%%): LoRaWAN US915 band
1.1	775
38.1	776	* (% style="color:red" %)IN865(%%): LoRaWAN IN865 band
1.1	777
38.1	778	* (% style="color:red" %)CN470(%%): LoRaWAN CN470 band
1.1	779
79.19	780
70.14	781	= 9. Packing Info =
67.11	782
	783
39.1	784	(% style="color:#037691" %)Package Includes:
1.1	785
79.7	786	* DDS20-LB LoRaWAN Ultrasonic Liquid Level Sensor x 1
1.1	787
39.1	788	(% style="color:#037691" %)Dimension and weight:
1.1	789
31.1	790	* Device Size: cm
1.1	791
31.1	792	* Device Weight: g
1.1	793
31.1	794	* Package Size / pcs : cm
1.1	795
31.1	796	* Weight / pcs : g
1.1	797
79.19	798
70.14	799	= 10. Support =
	800
	801
31.1	802	* 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	803
	804	* 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 LDS12-LB -- LoRaWAN LiDAR ToF Distance Sensor User Manual

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