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

Version 79.3 by Xiaoling on 2023/06/13 14:31

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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
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
	60	== 1.3 Specification ==
	61
	62
70.28	63	(% style="color:#037691" %)Common DC Characteristics:
70.6	64
70.28	65	* Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
	66	* Operating Temperature: -40 ~~ 85°C
	67
	68	(% style="color:#037691" %)LoRa Spec:
	69
	70	* Frequency Range, Band 1 (HF): 862 ~~ 1020 Mhz
	71	* Max +22 dBm constant RF output vs.
	72	* RX sensitivity: down to -139 dBm.
	73	* Excellent blocking immunity
	74
	75	(% style="color:#037691" %)Battery:
	76
	77	* Li/SOCI2 un-chargeable battery
	78	* Capacity: 8500mAh
	79	* Self-Discharge: <1% / Year @ 25°C
	80	* Max continuously current: 130mA
	81	* Max boost current: 2A, 1 second
	82
	83	(% style="color:#037691" %)Power Consumption
	84
	85	* Sleep Mode: 5uA @ 3.3v
	86	* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
	87
77.4	88	== 1.4 Suitable Container & Liquid ==
70.28	89
70.6	90
77.4	91	* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
	92	* Container shape is regular, and surface is smooth.
	93	* Container Thickness:
	94	** Pure metal material. 2~~8mm, best is 3~~5mm
	95	** Pure non metal material: <10 mm
	96	* Pure liquid without irregular deposition.(% style="display:none" %)
70.6	97
77.4	98
	99	== 1.5 Install DDS20-LB ==
	100
	101
	102	(% style="color:blue" %)Step 1(%%): Choose the installation point.
	103
	104	DDS20-LB (% style="color:red" %)MUST(%%) be installed on the container bottom middle position.
	105
79.2	106	[[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	107
	108
70.6	109	(((
77.4	110	(% style="color:blue" %)Step 2(%%): Polish the installation point.
	111	)))
70.6	112
77.4	113	(((
	114	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.
	115	)))
70.6	116
79.2	117	[[image:image-20230613143052-5.png]]
77.4	118
	119
	120	No polish needed if the container is shine metal surface without paint or non-metal container.
	121
79.2	122	[[image:image-20230613143125-6.png]]
77.4	123
	124
	125	(((
	126	(% style="color:blue" %)Step3: (%%)Test the installation point.
70.6	127	)))
	128
77.4	129	(((
	130	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.
	131	)))
1.1	132
	133
77.4	134	(((
	135	It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB won't detect the liquid level.
	136	)))
62.4	137
77.4	138	[[image:1655256160324-178.png\|\|height="151" width="419"]][[image:image-20220615092327-13.png\|\|height="146" width="260"]]
62.4	139
70.6	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	(((
	147	(% style="color:red" %)LED Status:
	148	)))
70.6	149
77.4	150	* (((
	151	Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
	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	(((
	167	(% style="color:red" %)Note 2:
	168	)))
	169
	170	(((
	171	(% style="color:red" %)Ultrasonic coupling paste (%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
	172	)))
	173
	174
	175	(((
	176	(% style="color:blue" %)Step4: (%%)Install use Epoxy ab glue.
	177	)))
	178
	179	(((
	180	Prepare Eproxy AB glue.
	181	)))
	182
	183	(((
	184	Put Eproxy AB glue in the sensor and press it hard on the container installation point.
	185	)))
	186
	187	(((
	188	Reset DDS20-LB and see if the BLUE LED is slowly blinking.
	189	)))
	190
	191	[[image:image-20220615091045-8.png\|\|height="203" width="341"]] [[image:image-20220615091045-9.png\|\|height="200" width="284"]]
	192
	193
	194	(((
	195	(% style="color:red" %)Note 1:
	196	)))
	197
	198	(((
	199	Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
	200	)))
	201
	202
	203	(((
	204	(% style="color:red" %)Note 2:
	205	)))
	206
	207	(((
	208	(% style="color:red" %)Eproxy AB glue(%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
	209	)))
	210
	211
70.28	212	== 1.6 Applications ==
70.6	213
	214
77.4	215	* Smart liquid control solution.
70.6	216
77.4	217	* Smart liquefied gas solution.
70.6	218
	219
79.2	220
77.4	221	== 1.7 Precautions ==
	222
	223
	224	* 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.
	225
	226	* 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.
	227
	228	* When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.(% style="display:none" %)
	229
	230
	231	== 1.8 Sleep mode and working mode ==
	232
	233
1.1	234	(% 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.
	235
	236	(% 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.
	237
	238
77.4	239	== 1.9 Button & LEDs ==
1.1	240
	241
6.1	242	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
1.1	243
	244
14.13	245	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
14.11	246	\|=(% 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	247	\|(% style="width:167px" %)Pressing ACT between 1s < time < 3s\|(% style="width:117px" %)Send an uplink\|(% style="width:225px" %)(((
	248	If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)blue led (%%)will blink once.
	249	Meanwhile, BLE module will be active and user can connect via BLE to configure device.
	250	)))
	251	\|(% style="width:167px" %)Pressing ACT for more than 3s\|(% style="width:117px" %)Active Device\|(% style="width:225px" %)(((
	252	(% 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.
	253	(% style="color:green" %)Green led(%%) will solidly turn on for 5 seconds after joined in network.
	254	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.
	255	)))
6.1	256	\|(% 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	257
77.4	258	== 1.10 BLE connection ==
1.1	259
	260
79.2	261	DDS20-LB support BLE remote configure.
1.1	262
	263	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:
	264
	265	* Press button to send an uplink
	266	* Press button to active device.
	267	* Device Power on or reset.
	268
	269	If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
	270
	271
77.4	272	== 1.11 Pin Definitions ==
1.1	273
43.1	274	[[image:image-20230523174230-1.png]]
1.1	275
43.1	276
77.4	277	== 1.12 Mechanical ==
67.4	278
	279
6.1	280	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
1.1	281
	282
6.1	283	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
1.1	284
	285
6.1	286	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
1.1	287
	288
70.20	289	(% style="color:blue" %)Probe Mechanical:
70.10	290
79.2	291	[[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	292
	293
79.2	294	[[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"]]
	295
	296
77.5	297	= 2. Configure DDS20-LB to connect to LoRaWAN network =
67.4	298
1.1	299	== 2.1 How it works ==
	300
	301
71.3	302	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	303
64.2	304	(% style="display:none" %) (%%)
1.1	305
	306	== 2.2 Quick guide to connect to LoRaWAN server (OTAA) ==
	307
	308
	309	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.
	310
62.5	311	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	312
77.2	313	[[image:image-20230613140140-4.png\|\|height="453" width="800"]](% style="display:none" %)
1.1	314
64.2	315
71.3	316	(% style="color:blue" %)Step 1:(%%) Create a device in TTN with the OTAA keys from DDS45-LB.
1.1	317
71.3	318	Each DDS45-LB is shipped with a sticker with the default device EUI as below:
1.1	319
30.1	320	[[image:image-20230426084152-1.png\|\|alt="图片-20230426084152-1.png" height="233" width="502"]]
1.1	321
	322
	323	You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
	324
	325
	326	(% style="color:blue" %)Register the device
	327
14.13	328	[[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	329
	330
	331	(% style="color:blue" %)Add APP EUI and DEV EUI
	332
30.1	333	[[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	334
	335
	336	(% style="color:blue" %)Add APP EUI in the application
	337
	338
30.1	339	[[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	340
	341
	342	(% style="color:blue" %)Add APP KEY
	343
30.1	344	[[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	345
	346
71.3	347	(% style="color:blue" %)Step 2:(%%) Activate on DDS45-LB
1.1	348
	349
71.3	350	Press the button for 5 seconds to activate the DDS45-LB.
6.1	351
1.1	352	(% 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.
	353
	354	After join success, it will start to upload messages to TTN and you can see the messages in the panel.
	355
	356
70.10	357	== 2.3 Uplink Payload ==
1.1	358
	359
62.5	360	(((
71.3	361	DDS45-LB will uplink payload via LoRaWAN with below payload format:
62.5	362	)))
1.1	363
62.5	364	(((
70.21	365	Uplink payload includes in total 8 bytes.
62.5	366	)))
1.1	367
67.7	368	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
70.10	369	\|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
	370	Size(bytes)
	371	)))\|=(% 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
	372	\|(% style="width:62.5px" %)Value\|(% style="width:62.5px" %)[[BAT>>\|\|anchor="H2.3.1A0BatteryInfo"]]\|(((
	373	[[Distance>>\|\|anchor="H2.3.2A0Distance"]]
	374	(unit: mm)
	375	)))\|[[Digital Interrupt (Optional)>>\|\|anchor="H2.3.3A0InterruptPin"]]\|(((
	376	[[Temperature (Optional )>>\|\|anchor="H2.3.4A0DS18B20Temperaturesensor"]]
	377	)))\|[[Sensor Flag>>\|\|anchor="H2.3.5A0SensorFlag"]]
1.1	378
70.10	379	[[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	380
	381
70.10	382	=== 2.3.1 Battery Info ===
1.1	383
	384
71.3	385	Check the battery voltage for DDS45-LB.
1.1	386
70.10	387	Ex1: 0x0B45 = 2885mV
1.1	388
70.10	389	Ex2: 0x0B49 = 2889mV
46.1	390
1.1	391
70.10	392	=== 2.3.2 Distance ===
67.7	393
	394
70.10	395	(((
73.5	396	Get the distance. Flat object range 30mm - 4500mm.
62.5	397	)))
1.1	398
62.5	399	(((
73.5	400	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	401
73.5	402	(% style="color:blue" %)0B05(H) = 2821 (D) = 2821 mm.
62.5	403	)))
1.1	404
70.10	405	* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
73.5	406	* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
67.7	407
70.10	408	=== 2.3.3 Interrupt Pin ===
67.7	409
10.1	410
70.22	411	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	412
70.10	413	Example:
1.1	414
70.10	415	0x00: Normal uplink packet.
1.1	416
70.10	417	0x01: Interrupt Uplink Packet.
1.1	418
	419
70.10	420	=== 2.3.4 DS18B20 Temperature sensor ===
62.5	421
1.1	422
70.10	423	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	424
70.10	425	Example:
1.1	426
70.10	427	If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
39.5	428
70.10	429	If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
1.1	430
	431
70.10	432	=== 2.3.5 Sensor Flag ===
1.1	433
	434
55.1	435	(((
70.10	436	0x01: Detect Ultrasonic Sensor
55.1	437	)))
	438
	439	(((
70.10	440	0x00: No Ultrasonic Sensor
55.1	441	)))
46.1	442
	443
70.10	444	=== 2.3.6 Decode payload in The Things Network ===
1.1	445
55.1	446
70.10	447	While using TTN network, you can add the payload format to decode the payload.
1.1	448
70.10	449	[[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	450
70.10	451	The payload decoder function for TTN V3 is here:
1.1	452
62.5	453	(((
71.3	454	DDS45-LB TTN V3 Payload Decoder: [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
62.5	455	)))
1.1	456
	457
70.10	458	== 2.4 Uplink Interval ==
1.1	459
	460
71.3	461	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	462
70.10	463
	464	== 2.5 Show Data in DataCake IoT Server ==
	465
	466
62.5	467	(((
70.10	468	[[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	469	)))
1.1	470
	471
62.5	472	(((
70.10	473	(% style="color:blue" %)Step 1(%%): Be sure that your device is programmed and properly connected to the network at this time.
62.5	474	)))
1.1	475
62.5	476	(((
70.10	477	(% 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	478	)))
14.26	479
55.1	480
70.10	481	[[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	482
	483
70.10	484	[[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	485
	486
70.10	487	(% style="color:blue" %)Step 3(%%): Create an account or log in Datacake.
1.1	488
71.3	489	(% style="color:blue" %)Step 4(%%): Search the DDS45-LB and add DevEUI.
1.1	490
70.10	491	[[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	492
1.1	493
70.10	494	After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
1.1	495
70.10	496	[[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	497
	498
	499
70.10	500	== 2.6 Datalog Feature ==
1.1	501
	502
71.3	503	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	504
	505
70.10	506	=== 2.6.1 Ways to get datalog via LoRaWAN ===
62.5	507
	508
71.3	509	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	510
	511	* (((
71.3	512	a) DDS45-LB will do an ACK check for data records sending to make sure every data arrive server.
62.5	513	)))
	514	* (((
71.3	515	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	516	)))
	517
	518	Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
	519
	520	[[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"]]
	521
	522
70.10	523	=== 2.6.2 Unix TimeStamp ===
62.5	524
	525
71.3	526	DDS45-LB uses Unix TimeStamp format based on
62.5	527
	528	[[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"]]
	529
	530	User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
	531
	532	Below is the converter example
	533
	534	[[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"]]
	535
	536
	537	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	538
	539
70.10	540	=== 2.6.3 Set Device Time ===
62.5	541
	542
	543	User need to set (% style="color:blue" %)SYNCMOD=1(%%) to enable sync time via MAC command.
	544
71.4	545	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	546
	547	(% 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.
	548
	549
70.10	550	=== 2.6.4 Poll sensor value ===
62.5	551
	552
	553	Users can poll sensor values based on timestamps. Below is the downlink command.
	554
	555	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
	556	\|(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)Downlink Command to poll Open/Close status (0x31)
	557	\|(% style="width:58px" %)1byte\|(% style="width:127px" %)4bytes\|(% style="width:124px" %)4bytes\|(% style="width:114px" %)1byte
	558	\|(% style="width:58px" %)31\|(% style="width:127px" %)Timestamp start\|(% style="width:124px" %)Timestamp end\|(% style="width:114px" %)Uplink Interval
	559
	560	(((
	561	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.
	562	)))
	563
	564	(((
64.8	565	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	566	)))
	567
	568	(((
	569	Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
	570	)))
	571
	572	(((
71.3	573	Uplink Internal =5s，means DDS45-LB will send one packet every 5s. range 5~~255s.
62.5	574	)))
	575
	576
70.10	577	== 2.7 Frequency Plans ==
1.1	578
	579
71.3	580	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	581
	582	[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
	583
	584
71.3	585	= 3. Configure DDS45-LB =
1.1	586
16.4	587	== 3.1 Configure Methods ==
1.1	588
	589
71.3	590	DDS45-LB supports below configure method:
1.1	591
	592	* AT Command via Bluetooth Connection (Recommended): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
67.20	593
11.1	594	* 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	595
1.1	596	* LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
	597
	598	== 3.2 General Commands ==
	599
	600
	601	These commands are to configure:
	602
	603	* General system settings like: uplink interval.
67.20	604
1.1	605	* LoRaWAN protocol & radio related command.
	606
	607	They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
	608
	609	[[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/]]
	610
	611
71.3	612	== 3.3 Commands special design for DDS45-LB ==
1.1	613
	614
71.3	615	These commands only valid for DDS45-LB, as below:
1.1	616
	617
	618	=== 3.3.1 Set Transmit Interval Time ===
	619
	620
62.5	621	(((
1.1	622	Feature: Change LoRaWAN End Node Transmit Interval.
62.5	623	)))
	624
	625	(((
1.1	626	(% style="color:blue" %)AT Command: AT+TDC
62.5	627	)))
1.1	628
14.34	629	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	630	\|=(% 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	631	\|(% style="width:156px" %)AT+TDC=?\|(% style="width:137px" %)Show current transmit Interval\|(((
	632	30000
	633	OK
	634	the interval is 30000ms = 30s
	635	)))
	636	\|(% style="width:156px" %)AT+TDC=60000\|(% style="width:137px" %)Set Transmit Interval\|(((
	637	OK
	638	Set transmit interval to 60000ms = 60 seconds
	639	)))
	640
62.5	641	(((
1.1	642	(% style="color:blue" %)Downlink Command: 0x01
62.5	643	)))
1.1	644
62.5	645	(((
1.1	646	Format: Command Code (0x01) followed by 3 bytes time value.
62.5	647	)))
1.1	648
62.5	649	(((
1.1	650	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	651	)))
1.1	652
62.5	653	* (((
	654	Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	655	)))
	656	* (((
73.8	657	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
73.7	658	)))
70.29	659
70.11	660	=== 3.3.2 Set Interrupt Mode ===
62.5	661
	662
43.1	663	Feature, Set Interrupt mode for PA8 of pin.
1.1	664
46.1	665	When AT+INTMOD=0 is set, PA8 is used as a digital input port.
	666
1.1	667	(% style="color:blue" %)AT Command: AT+INTMOD
	668
14.34	669	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	670	\|=(% 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	671	\|(% style="width:154px" %)AT+INTMOD=?\|(% style="width:196px" %)Show current interrupt mode\|(% style="width:157px" %)(((
	672	0
	673	OK
	674	the mode is 0 =Disable Interrupt
	675	)))
	676	\|(% style="width:154px" %)AT+INTMOD=2\|(% style="width:196px" %)(((
	677	Set Transmit Interval
	678	0. (Disable Interrupt),
	679	~1. (Trigger by rising and falling edge)
	680	2. (Trigger by falling edge)
	681	3. (Trigger by rising edge)
	682	)))\|(% style="width:157px" %)OK
	683
	684	(% style="color:blue" %)Downlink Command: 0x06
	685
	686	Format: Command Code (0x06) followed by 3 bytes.
	687
	688	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	689
	690	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
62.6	691
1.1	692	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	693
16.4	694	= 4. Battery & Power Consumption =
14.45	695
1.1	696
71.3	697	DDS45-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
1.1	698
	699	[[Battery Info & Power Consumption Analyze>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
	700
	701
16.4	702	= 5. OTA Firmware update =
1.1	703
	704
13.1	705	(% class="wikigeneratedid" %)
71.4	706	User can change firmware DDS45-LB to:
1.1	707
13.1	708	* Change Frequency band/ region.
62.7	709
13.1	710	* Update with new features.
62.7	711
13.1	712	* Fix bugs.
1.1	713
73.7	714	Firmware and changelog can be downloaded from : [[Firmware download link>>url:https://www.dropbox.com/sh/a5ue0nfrzqy9nz6/AABbvlATosDJKDwBmbirVbMYa?dl=0]]
1.1	715
31.1	716	Methods to Update Firmware:
1.1	717
70.18	718	* (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	719
70.18	720	* 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	721
31.1	722	= 6. FAQ =
1.1	723
71.4	724	== 6.1 What is the frequency plan for DDS45-LB? ==
1.1	725
62.7	726
71.4	727	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	728
1.1	729
71.4	730	== 6.2 Can I use DDS45-LB in condensation environment? ==
1.1	731
	732
71.4	733	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	734
	735
	736	= 7. Trouble Shooting =
	737
	738	== 7.1 Why I can't join TTN V3 in US915 / AU915 bands? ==
	739
	740
	741	It is due to channel mapping. Please see below link: [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome\|\|anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
	742
	743
	744	== 7.2 AT Command input doesn't work ==
	745
	746
	747	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.
	748
	749
	750	== 7.3 Why does the sensor reading show 0 or "No sensor" ==
	751
	752
	753	~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
	754
	755	2. Sensor wiring is disconnected
	756
	757	3. Not using the correct decoder
	758
	759
70.17	760	== 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	761
	762
	763	1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
	764
	765	2) Does it change with temperature, temperature will affect its measurement
	766
	767	3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
	768
	769	downlink command: (% style="color:blue" %)F1 01(%%), AT command: (% style="color:blue" %)AT+DDEBUG=1
	770
	771	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
	772
70.17	773	[[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	774
	775
	776	Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
	777
	778	Please send the data to us for check.
	779
	780
	781	= 8. Order Info =
	782
	783
71.4	784	Part Number: (% style="color:blue" %)DDS45-LB-XXX
70.14	785
70.12	786	(% style="color:red" %)XXX(%%): The default frequency band
1.1	787
38.1	788	* (% style="color:red" %)AS923(%%): LoRaWAN AS923 band
1.1	789
38.1	790	* (% style="color:red" %)AU915(%%): LoRaWAN AU915 band
1.1	791
38.1	792	* (% style="color:red" %)EU433(%%): LoRaWAN EU433 band
1.1	793
38.1	794	* (% style="color:red" %)EU868(%%): LoRaWAN EU868 band
1.1	795
38.1	796	* (% style="color:red" %)KR920(%%): LoRaWAN KR920 band
1.1	797
38.1	798	* (% style="color:red" %)US915(%%): LoRaWAN US915 band
1.1	799
38.1	800	* (% style="color:red" %)IN865(%%): LoRaWAN IN865 band
1.1	801
38.1	802	* (% style="color:red" %)CN470(%%): LoRaWAN CN470 band
1.1	803
70.14	804	= 9. Packing Info =
67.11	805
	806
39.1	807	(% style="color:#037691" %)Package Includes:
1.1	808
71.4	809	* DDS45-LB LoRaWAN Distance Detection Sensor x 1
1.1	810
39.1	811	(% style="color:#037691" %)Dimension and weight:
1.1	812
31.1	813	* Device Size: cm
1.1	814
31.1	815	* Device Weight: g
1.1	816
31.1	817	* Package Size / pcs : cm
1.1	818
31.1	819	* Weight / pcs : g
1.1	820
70.14	821	= 10. Support =
	822
	823
31.1	824	* 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	825
	826	* 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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