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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 173.2
edited by Xiaoling
on 2022/06/15 10:10
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To version 147.8
edited by Xiaoling
on 2022/06/10 17:44
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Summary

Details

Page properties
Title
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1 -LDDS20 - LoRaWAN Ultrasonic Liquid Level Sensor User Manual
1 +LDDS75 - LoRaWAN Distance Detection Sensor User Manual
Content
... ... @@ -1,97 +1,54 @@
1 1  (% style="text-align:center" %)
2 -[[image:1655254599445-662.png]]
2 +[[image:1654846127817-788.png]]
3 3  
4 +**Contents:**
4 4  
5 5  
6 6  
7 -**Table of Contents:**
8 8  
9 9  
10 10  
11 11  
12 12  
13 -
14 -
15 -
16 16  = 1.  Introduction =
17 17  
18 -== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
15 +== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
19 19  
20 20  (((
21 21  
22 22  
23 23  (((
24 -(((
25 -(((
26 -The Dragino LDDS20 is a (% style="color:#4472c4" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:#4472c4" %)**none-contact method **(%%)to measure the height of liquid in a container without opening the container, and send the value via LoRaWAN network to IoT Server
27 -)))
21 +The Dragino LDDS75 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
28 28  
29 -(((
30 -
31 -)))
32 32  
33 -(((
34 -The LDDS20 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 (% style="color:#4472c4" %)**none-contact measurement makes the measurement safety, easier and possible for some strict situation**. 
35 -)))
24 +It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
36 36  
37 -(((
38 -
39 -)))
40 40  
41 -(((
42 -LDDS20 uses ultrasonic sensing technology for distance measurement. LDDS20 is of high accuracy to measure various liquid such as: (% style="color:#4472c4" %)**toxic substances**(%%), (% style="color:#4472c4" %)**strong acids**(%%), (% style="color:#4472c4" %)**strong alkalis**(%%) and (% style="color:#4472c4" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
43 -)))
27 +The LoRa wireless technology used in LDDS75 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.
44 44  
45 -(((
46 -
47 -)))
48 48  
49 -(((
50 -The LoRa wireless technology used in LDDS20 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.
51 -)))
30 +LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
52 52  
53 -(((
54 -
55 -)))
56 56  
57 -(((
58 -LDDS20 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
59 -)))
33 +Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
60 60  
61 -(((
62 -
63 -)))
64 64  
65 -(((
66 -Each LDDS20 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
36 +(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors
67 67  )))
68 -
69 -(((
70 -
71 71  )))
72 -)))
73 73  
74 -(((
75 -(((
76 -(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
77 -)))
78 -)))
79 -)))
80 -)))
81 81  
41 +[[image:1654847051249-359.png]]
82 82  
83 -[[image:1655255122126-327.png]]
84 84  
85 85  
86 -
87 87  == ​1.2  Features ==
88 88  
89 89  * LoRaWAN 1.0.3 Class A
90 90  * Ultra low power consumption
91 -* Liquid Level Measurement by Ultrasonic technology
92 -* Measure through container, No need to contact Liquid.
93 -* Valid level range 20mm - 2000mm
94 -* Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
49 +* Distance Detection by Ultrasonic technology
50 +* Flat object range 280mm - 7500mm
51 +* Accuracy: ±(1cm+S*0.3%) (S: Distance)
95 95  * Cable Length : 25cm
96 96  * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
97 97  * AT Commands to change parameters
... ... @@ -98,136 +98,65 @@
98 98  * Uplink on periodically
99 99  * Downlink to change configure
100 100  * IP66 Waterproof Enclosure
101 -* 8500mAh Battery for long term use
58 +* 4000mAh or 8500mAh Battery for long term use
102 102  
60 +== 1.3  Specification ==
103 103  
104 -== 1.3  Suitable Container & Liquid ==
62 +=== 1.3.1  Rated environmental conditions ===
105 105  
106 -* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
107 -* Container shape is regular, and surface is smooth.
108 -* Container Thickness:
109 -** Pure metal material.  2~~8mm, best is 3~~5mm
110 -** Pure non metal material: <10 mm
111 -* Pure liquid without irregular deposition.
64 +[[image:image-20220610154839-1.png]]
112 112  
66 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
113 113  
114 -== 1.4  Mechanical ==
68 +**b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
115 115  
116 -[[image:image-20220615090910-1.png]]
117 117  
118 118  
119 -[[image:image-20220615090910-2.png]]
72 +=== 1.3.2  Effective measurement range Reference beam pattern ===
120 120  
74 +**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
121 121  
122 122  
123 -== 1.5  Install LDDS20 ==
124 124  
78 +[[image:1654852253176-749.png]]
125 125  
126 -(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
127 127  
128 -LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
81 +**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
129 129  
130 -[[image:image-20220615091045-3.png]]
131 131  
84 +[[image:1654852175653-550.png]](% style="display:none" %) ** **
132 132  
133 133  
134 -(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
135 135  
136 -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.
88 +== 1.5 ​ Applications ==
137 137  
138 -[[image:image-20220615092010-11.png]]
90 +* Horizontal distance measurement
91 +* Liquid level measurement
92 +* Parking management system
93 +* Object proximity and presence detection
94 +* Intelligent trash can management system
95 +* Robot obstacle avoidance
96 +* Automatic control
97 +* Sewer
98 +* Bottom water level monitoring
139 139  
100 +== 1.6  Pin mapping and power on ==
140 140  
141 -No polish needed if the container is shine metal surface without paint or non-metal container.
142 142  
143 -[[image:image-20220615092044-12.png]]
103 +[[image:1654847583902-256.png]]
144 144  
145 145  
146 146  
147 -(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
107 += 2.  Configure LDDS75 to connect to LoRaWAN network =
148 148  
149 -Power on LDDS75, 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.
150 -
151 -
152 -It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
153 -
154 -[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
155 -
156 -
157 -After paste the LDDS20 well, power on LDDS20. 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.
158 -
159 -
160 -(% style="color:red" %)**LED Status:**
161 -
162 -* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
163 -
164 -* (% 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.
165 -* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
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 -(% style="color:red" %)**Note 2:**
171 -
172 -(% 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.
173 -
174 -
175 -
176 -(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
177 -
178 -Prepare Eproxy AB glue.
179 -
180 -Put Eproxy AB glue in the sensor and press it hard on the container installation point.
181 -
182 -Reset LDDS20 and see if the BLUE LED is slowly blinking.
183 -
184 -[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
185 -
186 -
187 -(% style="color:red" %)**Note 1:**
188 -
189 -Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
190 -
191 -
192 -(% style="color:red" %)**Note 2:**
193 -
194 -(% 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.
195 -
196 -
197 -
198 -== 1.6 ​ Applications ==
199 -
200 -* Smart liquid control solution.
201 -* Smart liquefied gas solution.
202 -
203 -
204 -
205 -== 1.7  Precautions ==
206 -
207 -* 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.
208 -* 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.
209 -* 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.
210 -
211 -
212 -
213 -== 1.8  Pin mapping and power on ==
214 -
215 -
216 -[[image:1655257026882-201.png]]
217 -
218 -
219 -
220 -= 2.  Configure LDDS20 to connect to LoRaWAN network =
221 -
222 -
223 223  == 2.1  How it works ==
224 224  
225 225  (((
226 -The LDDS20 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS20. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value.
112 +The LDDS75 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
227 227  )))
228 228  
229 229  (((
230 -In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0UsingtheATCommands"]]to set the keys in the LDDS20.
116 +In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS75.
231 231  )))
232 232  
233 233  
... ... @@ -239,7 +239,7 @@
239 239  )))
240 240  
241 241  (((
242 -[[image:1655257698953-697.png]]
128 +[[image:1654848616367-242.png]]
243 243  )))
244 244  
245 245  (((
... ... @@ -247,31 +247,21 @@
247 247  )))
248 248  
249 249  (((
250 -
251 -
252 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS20.
136 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
253 253  )))
254 254  
255 255  (((
256 -Each LDDS20 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
140 +Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
257 257  )))
258 258  
259 259  [[image:image-20220607170145-1.jpeg]]
260 260  
261 261  
262 -(((
263 263  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
264 -)))
265 265  
266 -(((
267 267  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
268 -)))
269 269  
270 -(((
271 -
272 -
273 273  **Add APP EUI in the application**
274 -)))
275 275  
276 276  [[image:image-20220610161353-4.png]]
277 277  
... ... @@ -283,7 +283,6 @@
283 283  [[image:image-20220610161353-7.png]]
284 284  
285 285  
286 -
287 287  You can also choose to create the device manually.
288 288  
289 289   [[image:image-20220610161538-8.png]]
... ... @@ -296,17 +296,16 @@
296 296  
297 297  
298 298  
299 -(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
174 +(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
300 300  
301 301  
302 302  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
303 303  
304 -[[image:image-20220615095102-14.png]]
179 +[[image:image-20220610161724-10.png]]
305 305  
306 306  
307 -
308 308  (((
309 -(% style="color:blue" %)**Step 3**(%%)**:**  The LDDS20 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
183 +(% style="color:blue" %)**Step 3**(%%)**:** The LDDS75 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
310 310  )))
311 311  
312 312  [[image:1654849068701-275.png]]
... ... @@ -316,13 +316,11 @@
316 316  == 2.3  ​Uplink Payload ==
317 317  
318 318  (((
319 -(((
320 -LDDS20 will uplink payload via LoRaWAN with below payload format: 
193 +LDDS75 will uplink payload via LoRaWAN with below payload format: 
321 321  
322 -Uplink payload includes in total 8 bytes.
323 -Payload for firmware version v1.1.4. . Before v1.1.3, there is only 5 bytes: BAT and Distance(Please check manual v1.2.0 if you have 5 bytes payload).
195 +Uplink payload includes in total 4 bytes.
196 +Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
324 324  )))
325 -)))
326 326  
327 327  (((
328 328  
... ... @@ -333,12 +333,12 @@
333 333  **Size (bytes)**
334 334  )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
335 335  |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
336 -[[Distance>>||anchor="H2.3.2A0Distance"]]
208 +[[Distance>>||anchor="H2.3.3A0Distance"]]
337 337  
338 338  (unit: mm)
339 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
340 -[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
341 -)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
211 +)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
212 +[[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
213 +)))|[[Sensor Flag>>path:#Sensor_Flag]]
342 342  
343 343  [[image:1654850511545-399.png]]
344 344  
... ... @@ -347,7 +347,7 @@
347 347  === 2.3.1  Battery Info ===
348 348  
349 349  
350 -Check the battery voltage for LDDS20.
222 +Check the battery voltage for LDDS75.
351 351  
352 352  Ex1: 0x0B45 = 2885mV
353 353  
... ... @@ -357,22 +357,17 @@
357 357  
358 358  === 2.3.2  Distance ===
359 359  
360 -(((
361 -Get the distance. Flat object range 20mm - 2000mm.
362 -)))
232 +Get the distance. Flat object range 280mm - 7500mm.
363 363  
364 -(((
365 -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" %)** 0605(H) = 1541 (D) = 1541 mm.**
366 -)))
234 +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" %)** 0B05(H) = 2821 (D) = 2821 mm.**
367 367  
368 -* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
369 -* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
370 370  
237 +* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
238 +* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
371 371  
372 -
373 373  === 2.3.3  Interrupt Pin ===
374 374  
375 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
242 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.2A0SetInterruptMode"]] for the hardware and software set up.
376 376  
377 377  **Example:**
378 378  
... ... @@ -398,18 +398,14 @@
398 398  
399 399  === 2.3.5  Sensor Flag ===
400 400  
401 -(((
402 402  0x01: Detect Ultrasonic Sensor
403 -)))
404 404  
405 -(((
406 406  0x00: No Ultrasonic Sensor
407 -)))
408 408  
409 409  
273 +===
274 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
410 410  
411 -=== 2.3.6  Decode payload in The Things Network ===
412 -
413 413  While using TTN network, you can add the payload format to decode the payload.
414 414  
415 415  
... ... @@ -417,42 +417,16 @@
417 417  
418 418  The payload decoder function for TTN V3 is here:
419 419  
420 -(((
421 -LDDS20 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS20/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
422 -)))
283 +LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
423 423  
424 424  
425 425  
426 -== 2.4  Downlink Payload ==
287 +== 2.4  Uplink Interval ==
427 427  
428 -By default, LDDS20 prints the downlink payload to console port.
289 +The LDDS75 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>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]]
429 429  
430 -[[image:image-20220615100930-15.png]]
431 431  
432 432  
433 -**Examples:**
434 -
435 -
436 -* **Set TDC**
437 -
438 -If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
439 -
440 -Payload:    01 00 00 1E    TDC=30S
441 -
442 -Payload:    01 00 00 3C    TDC=60S
443 -
444 -
445 -* **Reset**
446 -
447 -If payload = 0x04FF, it will reset the LDDS20
448 -
449 -
450 -* **CFM**
451 -
452 -Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
453 -
454 -
455 -
456 456  == 2.5  ​Show Data in DataCake IoT Server ==
457 457  
458 458  (((
... ... @@ -972,17 +972,10 @@
972 972  == 2.8  ​Firmware Change Log ==
973 973  
974 974  
975 -(((
976 976  **Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
977 -)))
978 978  
979 -(((
980 -
981 -)))
982 982  
983 -(((
984 984  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
985 -)))
986 986  
987 987  
988 988  
... ... @@ -991,11 +991,9 @@
991 991  
992 992  [[image:image-20220610172003-1.png]]
993 993  
994 -
995 995  [[image:image-20220610172003-2.png]]
996 996  
997 997  
998 -
999 999  == 2.10  Battery Analysis ==
1000 1000  
1001 1001  === 2.10.1  Battery Type ===
... ... @@ -1006,7 +1006,7 @@
1006 1006  The battery related documents as below:
1007 1007  
1008 1008  * (((
1009 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
837 +[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1010 1010  )))
1011 1011  * (((
1012 1012  [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
... ... @@ -1022,7 +1022,7 @@
1022 1022  === 2.10.2  Replace the battery ===
1023 1023  
1024 1024  (((
1025 -You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
853 +You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
1026 1026  )))
1027 1027  
1028 1028  (((
... ... @@ -1030,12 +1030,12 @@
1030 1030  )))
1031 1031  
1032 1032  (((
1033 -The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
861 +The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can’t find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
1034 1034  )))
1035 1035  
1036 1036  
1037 1037  
1038 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
866 += 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
1039 1039  
1040 1040  (((
1041 1041  (((
... ... @@ -1045,7 +1045,7 @@
1045 1045  
1046 1046  * (((
1047 1047  (((
1048 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
876 +AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
1049 1049  )))
1050 1050  )))
1051 1051  * (((
... ... @@ -1126,9 +1126,7 @@
1126 1126  [[image:image-20220610172924-5.png]]
1127 1127  
1128 1128  
1129 -(((
1130 1130  In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
1131 -)))
1132 1132  
1133 1133  
1134 1134   [[image:image-20220610172924-6.png||height="601" width="860"]]
... ... @@ -1152,19 +1152,16 @@
1152 1152  (((
1153 1153  Format: Command Code (0x01) followed by 3 bytes time value.
1154 1154  
1155 -(((
1156 1156  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1157 -)))
1158 1158  
1159 1159  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1160 1160  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1161 1161  )))
1162 -)))
1163 1163  
1164 1164  
988 +
989 +)))
1165 1165  
1166 -
1167 -
1168 1168  == 3.3  Set Interrupt Mode ==
1169 1169  
1170 1170  Feature, Set Interrupt mode for GPIO_EXIT.
... ... @@ -1171,7 +1171,7 @@
1171 1171  
1172 1172  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1173 1173  
1174 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
1175 1175  
1176 1176  
1177 1177  (% style="color:#037691" %)**Downlink Command: 0x06**
... ... @@ -1178,72 +1178,115 @@
1178 1178  
1179 1179  Format: Command Code (0x06) followed by 3 bytes.
1180 1180  
1181 -(((
1182 1182  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1183 -)))
1184 1184  
1185 1185  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1186 1186  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1187 1187  
1188 -= 4.  FAQ =
1189 1189  
1190 -== 4.1  What is the frequency plan for LDDS75? ==
1191 1191  
1192 -LDDS75 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"]]
1193 1193  
1194 1194  
1013 += 6.  Use AT Command =
1195 1195  
1196 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1015 +== 6.1  Access AT Commands ==
1197 1197  
1198 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1199 -When downloading the images, choose the required image file for download. ​
1017 +LLDS12 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LLDS12 for using AT command, as below.
1200 1200  
1019 +[[image:1654593668970-604.png]]
1201 1201  
1021 +**Connection:**
1202 1202  
1203 -== 4.3  Can I use LDDS75 in condensation environment? ==
1023 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1204 1204  
1205 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1025 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1206 1206  
1027 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1207 1207  
1208 1208  
1209 -= 5.  Trouble Shooting =
1030 +(((
1031 +(((
1032 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1033 +)))
1210 1210  
1211 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1035 +(((
1036 +LLDS12 will output system info once power on as below:
1037 +)))
1038 +)))
1212 1212  
1213 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1214 1214  
1041 + [[image:1654593712276-618.png]]
1215 1215  
1216 -== 5.2  AT Command input doesn't work ==
1043 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1217 1217  
1045 +
1046 += 7.  FAQ =
1047 +
1048 +== 7.1  How to change the LoRa Frequency Bands/Region ==
1049 +
1050 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1051 +When downloading the images, choose the required image file for download. ​
1052 +
1053 +
1054 += 8.  Trouble Shooting =
1055 +
1056 +== 8.1  AT Commands input doesn’t work ==
1057 +
1058 +
1059 +(((
1218 1218  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:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
1061 +)))
1219 1219  
1063 +
1064 +== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
1065 +
1066 +
1220 1220  (((
1068 +(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance (such as glass and water, etc.)
1069 +)))
1070 +
1071 +(((
1072 +Troubleshooting: Please avoid use of this product under such circumstance in practice.
1073 +)))
1074 +
1075 +(((
1221 1221  
1222 1222  )))
1223 1223  
1079 +(((
1080 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1081 +)))
1224 1224  
1083 +(((
1084 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1085 +)))
1086 +
1087 +
1088 +
1225 1225  = 6.  Order Info =
1226 1226  
1227 1227  
1228 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1092 +Part Number: (% style="color:blue" %)**LLDS12-XX**
1229 1229  
1230 1230  
1231 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1095 +(% style="color:blue" %)**XX**(%%): The default frequency band
1232 1232  
1233 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1234 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1235 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1236 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1237 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1238 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1239 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1240 -* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1097 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
1098 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1099 +* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1100 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1101 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1102 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1103 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1104 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1241 1241  
1242 -(% style="color:blue" %)**YY**(%%): Battery Option
1106 +**YY**: Battery Option
1243 1243  
1244 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1245 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1108 +* **4**: 4000mAh battery
1109 +* **8**: 8500mAh battery
1246 1246  
1111 +
1112 +
1247 1247  = 7. ​ Packing Info =
1248 1248  
1249 1249  
... ... @@ -1258,6 +1258,8 @@
1258 1258  * Package Size / pcs : cm
1259 1259  * Weight / pcs : g
1260 1260  
1127 +
1128 +
1261 1261  = 8.  ​Support =
1262 1262  
1263 1263  * 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.
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