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

Version 78.1 by Xiaoling on 2023/06/13 14:30

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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
	88
77.4	89	== 1.4 Suitable Container & Liquid ==
70.28	90
70.6	91
77.4	92	* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
	93	* Container shape is regular, and surface is smooth.
	94	* Container Thickness:
	95	** Pure metal material. 2~~8mm, best is 3~~5mm
	96	** Pure non metal material: <10 mm
	97	* Pure liquid without irregular deposition.(% style="display:none" %)
70.6	98
77.4	99
	100
	101	== 1.5 Install DDS20-LB ==
	102
	103
	104	(% style="color:blue" %)Step 1(%%): Choose the installation point.
	105
	106	DDS20-LB (% style="color:red" %)MUST(%%) be installed on the container bottom middle position.
	107
	108
	109	[[image:image-20220615091045-3.png]]
	110
	111
	112
70.6	113	(((
77.4	114	(% style="color:blue" %)Step 2(%%): Polish the installation point.
	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
77.4	121	[[image:image-20220615092010-11.png]]
	122
	123
	124	No polish needed if the container is shine metal surface without paint or non-metal container.
	125
	126	[[image:image-20220615092044-12.png]]
	127
	128
	129
	130	(((
	131	(% style="color:blue" %)Step3: (%%)Test the installation point.
70.6	132	)))
	133
77.4	134	(((
	135	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.
	136	)))
1.1	137
	138
77.4	139	(((
	140	It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB won't detect the liquid level.
	141	)))
62.4	142
77.4	143	[[image:1655256160324-178.png\|\|height="151" width="419"]][[image:image-20220615092327-13.png\|\|height="146" width="260"]]
62.4	144
70.6	145
77.4	146	(((
	147	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.
	148	)))
70.6	149
	150
77.4	151	(((
	152	(% style="color:red" %)LED Status:
	153	)))
70.6	154
77.4	155	* (((
	156	Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
	157	)))
	158
	159	* (((
	160	(% 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.
	161	)))
	162	* (((
	163	(% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
	164	)))
	165
	166	(((
	167	LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
	168	)))
	169
	170
	171	(((
	172	(% style="color:red" %)Note 2:
	173	)))
	174
	175	(((
	176	(% 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.
	177	)))
	178
	179
	180	(((
	181	(% style="color:blue" %)Step4: (%%)Install use Epoxy ab glue.
	182	)))
	183
	184	(((
	185	Prepare Eproxy AB glue.
	186	)))
	187
	188	(((
	189	Put Eproxy AB glue in the sensor and press it hard on the container installation point.
	190	)))
	191
	192	(((
	193	Reset DDS20-LB and see if the BLUE LED is slowly blinking.
	194	)))
	195
	196	[[image:image-20220615091045-8.png\|\|height="203" width="341"]] [[image:image-20220615091045-9.png\|\|height="200" width="284"]]
	197
	198
	199	(((
	200	(% style="color:red" %)Note 1:
	201	)))
	202
	203	(((
	204	Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
	205	)))
	206
	207
	208	(((
	209	(% style="color:red" %)Note 2:
	210	)))
	211
	212	(((
	213	(% 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.
	214	)))
	215
	216
70.28	217	== 1.6 Applications ==
70.6	218
	219
77.4	220	* Smart liquid control solution.
70.6	221
77.4	222	* Smart liquefied gas solution.
70.6	223
	224
77.4	225	== 1.7 Precautions ==
	226
	227
	228	* 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.
	229
	230	* 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.
	231
	232	* 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" %)
	233
	234
	235
	236	== 1.8 Sleep mode and working mode ==
	237
	238
1.1	239	(% 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.
	240
	241	(% 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.
	242
	243
77.4	244	== 1.9 Button & LEDs ==
1.1	245
	246
6.1	247	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
1.1	248
	249
14.13	250	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
14.11	251	\|=(% 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	252	\|(% style="width:167px" %)Pressing ACT between 1s < time < 3s\|(% style="width:117px" %)Send an uplink\|(% style="width:225px" %)(((
	253	If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)blue led (%%)will blink once.
	254	Meanwhile, BLE module will be active and user can connect via BLE to configure device.
	255	)))
	256	\|(% style="width:167px" %)Pressing ACT for more than 3s\|(% style="width:117px" %)Active Device\|(% style="width:225px" %)(((
	257	(% 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.
	258	(% style="color:green" %)Green led(%%) will solidly turn on for 5 seconds after joined in network.
	259	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.
	260	)))
6.1	261	\|(% 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	262
77.4	263	== 1.10 BLE connection ==
1.1	264
	265
71.3	266	DDS45-LB support BLE remote configure.
1.1	267
	268
	269	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:
	270
	271	* Press button to send an uplink
	272	* Press button to active device.
	273	* Device Power on or reset.
	274
	275	If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
	276
	277
77.4	278	== 1.11 Pin Definitions ==
1.1	279
43.1	280	[[image:image-20230523174230-1.png]]
1.1	281
43.1	282
77.4	283	== 1.12 Mechanical ==
67.4	284
	285
6.1	286	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
1.1	287
	288
6.1	289	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
1.1	290
	291
6.1	292	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
1.1	293
	294
70.20	295	(% style="color:blue" %)Probe Mechanical:
70.10	296
73.4	297	[[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	298
	299
77.5	300	= 2. Configure DDS20-LB to connect to LoRaWAN network =
67.4	301
1.1	302	== 2.1 How it works ==
	303
	304
71.3	305	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	306
64.2	307	(% style="display:none" %) (%%)
1.1	308
	309	== 2.2 Quick guide to connect to LoRaWAN server (OTAA) ==
	310
	311
	312	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.
	313
62.5	314	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	315
77.2	316	[[image:image-20230613140140-4.png\|\|height="453" width="800"]](% style="display:none" %)
1.1	317
64.2	318
71.3	319	(% style="color:blue" %)Step 1:(%%) Create a device in TTN with the OTAA keys from DDS45-LB.
1.1	320
71.3	321	Each DDS45-LB is shipped with a sticker with the default device EUI as below:
1.1	322
30.1	323	[[image:image-20230426084152-1.png\|\|alt="图片-20230426084152-1.png" height="233" width="502"]]
1.1	324
	325
	326	You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
	327
	328
	329	(% style="color:blue" %)Register the device
	330
14.13	331	[[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	332
	333
	334	(% style="color:blue" %)Add APP EUI and DEV EUI
	335
30.1	336	[[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	337
	338
	339	(% style="color:blue" %)Add APP EUI in the application
	340
	341
30.1	342	[[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	343
	344
	345	(% style="color:blue" %)Add APP KEY
	346
30.1	347	[[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	348
	349
71.3	350	(% style="color:blue" %)Step 2:(%%) Activate on DDS45-LB
1.1	351
	352
71.3	353	Press the button for 5 seconds to activate the DDS45-LB.
6.1	354
1.1	355	(% 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.
	356
	357	After join success, it will start to upload messages to TTN and you can see the messages in the panel.
	358
	359
70.10	360	== 2.3 Uplink Payload ==
1.1	361
	362
62.5	363	(((
71.3	364	DDS45-LB will uplink payload via LoRaWAN with below payload format:
62.5	365	)))
1.1	366
62.5	367	(((
70.21	368	Uplink payload includes in total 8 bytes.
62.5	369	)))
1.1	370
67.7	371	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
70.10	372	\|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
	373	Size(bytes)
	374	)))\|=(% 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
	375	\|(% style="width:62.5px" %)Value\|(% style="width:62.5px" %)[[BAT>>\|\|anchor="H2.3.1A0BatteryInfo"]]\|(((
	376	[[Distance>>\|\|anchor="H2.3.2A0Distance"]]
	377	(unit: mm)
	378	)))\|[[Digital Interrupt (Optional)>>\|\|anchor="H2.3.3A0InterruptPin"]]\|(((
	379	[[Temperature (Optional )>>\|\|anchor="H2.3.4A0DS18B20Temperaturesensor"]]
	380	)))\|[[Sensor Flag>>\|\|anchor="H2.3.5A0SensorFlag"]]
1.1	381
70.10	382	[[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	383
	384
70.10	385	=== 2.3.1 Battery Info ===
1.1	386
	387
71.3	388	Check the battery voltage for DDS45-LB.
1.1	389
70.10	390	Ex1: 0x0B45 = 2885mV
1.1	391
70.10	392	Ex2: 0x0B49 = 2889mV
46.1	393
1.1	394
70.10	395	=== 2.3.2 Distance ===
67.7	396
	397
70.10	398	(((
73.5	399	Get the distance. Flat object range 30mm - 4500mm.
62.5	400	)))
1.1	401
62.5	402	(((
73.5	403	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	404
73.5	405	(% style="color:blue" %)0B05(H) = 2821 (D) = 2821 mm.
62.5	406	)))
1.1	407
70.10	408	* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
73.5	409	* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
67.7	410
70.10	411	=== 2.3.3 Interrupt Pin ===
67.7	412
10.1	413
70.22	414	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	415
70.10	416	Example:
1.1	417
70.10	418	0x00: Normal uplink packet.
1.1	419
70.10	420	0x01: Interrupt Uplink Packet.
1.1	421
	422
70.10	423	=== 2.3.4 DS18B20 Temperature sensor ===
62.5	424
1.1	425
70.10	426	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	427
70.10	428	Example:
1.1	429
70.10	430	If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
39.5	431
70.10	432	If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
1.1	433
	434
70.10	435	=== 2.3.5 Sensor Flag ===
1.1	436
	437
55.1	438	(((
70.10	439	0x01: Detect Ultrasonic Sensor
55.1	440	)))
	441
	442	(((
70.10	443	0x00: No Ultrasonic Sensor
55.1	444	)))
46.1	445
	446
70.10	447	=== 2.3.6 Decode payload in The Things Network ===
1.1	448
55.1	449
70.10	450	While using TTN network, you can add the payload format to decode the payload.
1.1	451
70.10	452	[[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	453
70.10	454	The payload decoder function for TTN V3 is here:
1.1	455
62.5	456	(((
71.3	457	DDS45-LB TTN V3 Payload Decoder: [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
62.5	458	)))
1.1	459
	460
70.10	461	== 2.4 Uplink Interval ==
1.1	462
	463
71.3	464	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	465
70.10	466
	467	== 2.5 Show Data in DataCake IoT Server ==
	468
	469
62.5	470	(((
70.10	471	[[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	472	)))
1.1	473
	474
62.5	475	(((
70.10	476	(% style="color:blue" %)Step 1(%%): Be sure that your device is programmed and properly connected to the network at this time.
62.5	477	)))
1.1	478
62.5	479	(((
70.10	480	(% 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	481	)))
14.26	482
55.1	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/1654592790040-760.png?rev=1.1\|\|alt="1654592790040-760.png"]]
1.1	485
	486
70.10	487	[[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	488
	489
70.10	490	(% style="color:blue" %)Step 3(%%): Create an account or log in Datacake.
1.1	491
71.3	492	(% style="color:blue" %)Step 4(%%): Search the DDS45-LB and add DevEUI.
1.1	493
70.10	494	[[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	495
1.1	496
70.10	497	After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
1.1	498
70.10	499	[[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	500
	501
	502
70.10	503	== 2.6 Datalog Feature ==
1.1	504
	505
71.3	506	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	507
	508
70.10	509	=== 2.6.1 Ways to get datalog via LoRaWAN ===
62.5	510
	511
71.3	512	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	513
	514	* (((
71.3	515	a) DDS45-LB will do an ACK check for data records sending to make sure every data arrive server.
62.5	516	)))
	517	* (((
71.3	518	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	519	)))
	520
	521	Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
	522
	523	[[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"]]
	524
	525
70.10	526	=== 2.6.2 Unix TimeStamp ===
62.5	527
	528
71.3	529	DDS45-LB uses Unix TimeStamp format based on
62.5	530
	531	[[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"]]
	532
	533	User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
	534
	535	Below is the converter example
	536
	537	[[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"]]
	538
	539
	540	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	541
	542
70.10	543	=== 2.6.3 Set Device Time ===
62.5	544
	545
	546	User need to set (% style="color:blue" %)SYNCMOD=1(%%) to enable sync time via MAC command.
	547
71.4	548	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	549
	550	(% 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.
	551
	552
70.10	553	=== 2.6.4 Poll sensor value ===
62.5	554
	555
	556	Users can poll sensor values based on timestamps. Below is the downlink command.
	557
	558	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
	559	\|(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)Downlink Command to poll Open/Close status (0x31)
	560	\|(% style="width:58px" %)1byte\|(% style="width:127px" %)4bytes\|(% style="width:124px" %)4bytes\|(% style="width:114px" %)1byte
	561	\|(% style="width:58px" %)31\|(% style="width:127px" %)Timestamp start\|(% style="width:124px" %)Timestamp end\|(% style="width:114px" %)Uplink Interval
	562
	563	(((
	564	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.
	565	)))
	566
	567	(((
64.8	568	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	569	)))
	570
	571	(((
	572	Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
	573	)))
	574
	575	(((
71.3	576	Uplink Internal =5s，means DDS45-LB will send one packet every 5s. range 5~~255s.
62.5	577	)))
	578
	579
70.10	580	== 2.7 Frequency Plans ==
1.1	581
	582
71.3	583	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	584
	585	[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
	586
	587
71.3	588	= 3. Configure DDS45-LB =
1.1	589
16.4	590	== 3.1 Configure Methods ==
1.1	591
	592
71.3	593	DDS45-LB supports below configure method:
1.1	594
	595	* AT Command via Bluetooth Connection (Recommended): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
67.20	596
11.1	597	* 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	598
1.1	599	* LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
	600
	601	== 3.2 General Commands ==
	602
	603
	604	These commands are to configure:
	605
	606	* General system settings like: uplink interval.
67.20	607
1.1	608	* LoRaWAN protocol & radio related command.
	609
	610	They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
	611
	612	[[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/]]
	613
	614
71.3	615	== 3.3 Commands special design for DDS45-LB ==
1.1	616
	617
71.3	618	These commands only valid for DDS45-LB, as below:
1.1	619
	620
	621	=== 3.3.1 Set Transmit Interval Time ===
	622
	623
62.5	624	(((
1.1	625	Feature: Change LoRaWAN End Node Transmit Interval.
62.5	626	)))
	627
	628	(((
1.1	629	(% style="color:blue" %)AT Command: AT+TDC
62.5	630	)))
1.1	631
14.34	632	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	633	\|=(% 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	634	\|(% style="width:156px" %)AT+TDC=?\|(% style="width:137px" %)Show current transmit Interval\|(((
	635	30000
	636	OK
	637	the interval is 30000ms = 30s
	638	)))
	639	\|(% style="width:156px" %)AT+TDC=60000\|(% style="width:137px" %)Set Transmit Interval\|(((
	640	OK
	641	Set transmit interval to 60000ms = 60 seconds
	642	)))
	643
62.5	644	(((
1.1	645	(% style="color:blue" %)Downlink Command: 0x01
62.5	646	)))
1.1	647
62.5	648	(((
1.1	649	Format: Command Code (0x01) followed by 3 bytes time value.
62.5	650	)))
1.1	651
62.5	652	(((
1.1	653	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	654	)))
1.1	655
62.5	656	* (((
	657	Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	658	)))
	659	* (((
73.8	660	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
73.7	661	)))
70.29	662
70.11	663	=== 3.3.2 Set Interrupt Mode ===
62.5	664
	665
43.1	666	Feature, Set Interrupt mode for PA8 of pin.
1.1	667
46.1	668	When AT+INTMOD=0 is set, PA8 is used as a digital input port.
	669
1.1	670	(% style="color:blue" %)AT Command: AT+INTMOD
	671
14.34	672	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
62.5	673	\|=(% 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	674	\|(% style="width:154px" %)AT+INTMOD=?\|(% style="width:196px" %)Show current interrupt mode\|(% style="width:157px" %)(((
	675	0
	676	OK
	677	the mode is 0 =Disable Interrupt
	678	)))
	679	\|(% style="width:154px" %)AT+INTMOD=2\|(% style="width:196px" %)(((
	680	Set Transmit Interval
	681	0. (Disable Interrupt),
	682	~1. (Trigger by rising and falling edge)
	683	2. (Trigger by falling edge)
	684	3. (Trigger by rising edge)
	685	)))\|(% style="width:157px" %)OK
	686
	687	(% style="color:blue" %)Downlink Command: 0x06
	688
	689	Format: Command Code (0x06) followed by 3 bytes.
	690
	691	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	692
	693	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
62.6	694
1.1	695	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	696
16.4	697	= 4. Battery & Power Consumption =
14.45	698
1.1	699
71.3	700	DDS45-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
1.1	701
	702	[[Battery Info & Power Consumption Analyze>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
	703
	704
16.4	705	= 5. OTA Firmware update =
1.1	706
	707
13.1	708	(% class="wikigeneratedid" %)
71.4	709	User can change firmware DDS45-LB to:
1.1	710
13.1	711	* Change Frequency band/ region.
62.7	712
13.1	713	* Update with new features.
62.7	714
13.1	715	* Fix bugs.
1.1	716
73.7	717	Firmware and changelog can be downloaded from : [[Firmware download link>>url:https://www.dropbox.com/sh/a5ue0nfrzqy9nz6/AABbvlATosDJKDwBmbirVbMYa?dl=0]]
1.1	718
31.1	719	Methods to Update Firmware:
1.1	720
70.18	721	* (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	722
70.18	723	* 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	724
31.1	725	= 6. FAQ =
1.1	726
71.4	727	== 6.1 What is the frequency plan for DDS45-LB? ==
1.1	728
62.7	729
71.4	730	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	731
1.1	732
71.4	733	== 6.2 Can I use DDS45-LB in condensation environment? ==
1.1	734
	735
71.4	736	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	737
	738
	739	= 7. Trouble Shooting =
	740
	741	== 7.1 Why I can't join TTN V3 in US915 / AU915 bands? ==
	742
	743
	744	It is due to channel mapping. Please see below link: [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome\|\|anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
	745
	746
	747	== 7.2 AT Command input doesn't work ==
	748
	749
	750	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.
	751
	752
	753	== 7.3 Why does the sensor reading show 0 or "No sensor" ==
	754
	755
	756	~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
	757
	758	2. Sensor wiring is disconnected
	759
	760	3. Not using the correct decoder
	761
	762
70.17	763	== 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	764
	765
	766	1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
	767
	768	2) Does it change with temperature, temperature will affect its measurement
	769
	770	3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
	771
	772	downlink command: (% style="color:blue" %)F1 01(%%), AT command: (% style="color:blue" %)AT+DDEBUG=1
	773
	774	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
	775
70.17	776	[[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	777
	778
	779	Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
	780
	781	Please send the data to us for check.
	782
	783
	784	= 8. Order Info =
	785
	786
71.4	787	Part Number: (% style="color:blue" %)DDS45-LB-XXX
70.14	788
70.12	789	(% style="color:red" %)XXX(%%): The default frequency band
1.1	790
38.1	791	* (% style="color:red" %)AS923(%%): LoRaWAN AS923 band
1.1	792
38.1	793	* (% style="color:red" %)AU915(%%): LoRaWAN AU915 band
1.1	794
38.1	795	* (% style="color:red" %)EU433(%%): LoRaWAN EU433 band
1.1	796
38.1	797	* (% style="color:red" %)EU868(%%): LoRaWAN EU868 band
1.1	798
38.1	799	* (% style="color:red" %)KR920(%%): LoRaWAN KR920 band
1.1	800
38.1	801	* (% style="color:red" %)US915(%%): LoRaWAN US915 band
1.1	802
38.1	803	* (% style="color:red" %)IN865(%%): LoRaWAN IN865 band
1.1	804
38.1	805	* (% style="color:red" %)CN470(%%): LoRaWAN CN470 band
1.1	806
70.14	807	= 9. Packing Info =
67.11	808
	809
39.1	810	(% style="color:#037691" %)Package Includes:
1.1	811
71.4	812	* DDS45-LB LoRaWAN Distance Detection Sensor x 1
1.1	813
39.1	814	(% style="color:#037691" %)Dimension and weight:
1.1	815
31.1	816	* Device Size: cm
1.1	817
31.1	818	* Device Weight: g
1.1	819
31.1	820	* Package Size / pcs : cm
1.1	821
31.1	822	* Weight / pcs : g
1.1	823
70.14	824	= 10. Support =
	825
	826
31.1	827	* 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	828
	829	* 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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