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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 173.3
edited by Xiaoling
on 2022/06/15 10:11
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To version 147.8
edited by Xiaoling
on 2022/06/10 17:44
Change comment: There is no comment for this version

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
... ... @@ -98,132 +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  
103 -== 1.3  Suitable Container & Liquid ==
60 +== 1.3  Specification ==
104 104  
105 -* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
106 -* Container shape is regular, and surface is smooth.
107 -* Container Thickness:
108 -** Pure metal material.  2~~8mm, best is 3~~5mm
109 -** Pure non metal material: <10 mm
110 -* Pure liquid without irregular deposition.
62 +=== 1.3.1  Rated environmental conditions ===
111 111  
112 -== 1.4  Mechanical ==
64 +[[image:image-20220610154839-1.png]]
113 113  
114 -[[image:image-20220615090910-1.png]]
66 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
115 115  
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)**
116 116  
117 -[[image:image-20220615090910-2.png]]
118 118  
119 119  
72 +=== 1.3.2  Effective measurement range Reference beam pattern ===
120 120  
121 -== 1.5  Install LDDS20 ==
74 +**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
122 122  
123 123  
124 -(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
125 125  
126 -LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
78 +[[image:1654852253176-749.png]]
127 127  
128 -[[image:image-20220615091045-3.png]]
129 129  
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.**
130 130  
131 131  
132 -(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
84 +[[image:1654852175653-550.png]](% style="display:none" %) ** **
133 133  
134 -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.
135 135  
136 -[[image:image-20220615092010-11.png]]
137 137  
88 +== 1.5 ​ Applications ==
138 138  
139 -No polish needed if the container is shine metal surface without paint or non-metal container.
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
140 140  
141 -[[image:image-20220615092044-12.png]]
100 +== 1.6  Pin mapping and power on ==
142 142  
143 143  
103 +[[image:1654847583902-256.png]]
144 144  
145 -(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
146 146  
147 -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.
148 148  
107 += 2.  Configure LDDS75 to connect to LoRaWAN network =
149 149  
150 -It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
151 -
152 -[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
153 -
154 -
155 -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.
156 -
157 -
158 -(% style="color:red" %)**LED Status:**
159 -
160 -* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
161 -
162 -* (% 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.
163 -* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
164 -
165 -LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
166 -
167 -
168 -(% style="color:red" %)**Note 2:**
169 -
170 -(% 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.
171 -
172 -
173 -
174 -(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 -
176 -Prepare Eproxy AB glue.
177 -
178 -Put Eproxy AB glue in the sensor and press it hard on the container installation point.
179 -
180 -Reset LDDS20 and see if the BLUE LED is slowly blinking.
181 -
182 -[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
183 -
184 -
185 -(% style="color:red" %)**Note 1:**
186 -
187 -Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
188 -
189 -
190 -(% style="color:red" %)**Note 2:**
191 -
192 -(% 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.
193 -
194 -
195 -
196 -== 1.6 ​ Applications ==
197 -
198 -* Smart liquid control solution.
199 -* Smart liquefied gas solution.
200 -
201 -
202 -== 1.7  Precautions ==
203 -
204 -* 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.
205 -* 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.
206 -* 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.
207 -
208 -
209 -== 1.8  Pin mapping and power on ==
210 -
211 -
212 -[[image:1655257026882-201.png]]
213 -
214 -
215 -
216 -= 2.  Configure LDDS20 to connect to LoRaWAN network =
217 -
218 -
219 219  == 2.1  How it works ==
220 220  
221 221  (((
222 -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
223 223  )))
224 224  
225 225  (((
226 -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.
227 227  )))
228 228  
229 229  
... ... @@ -235,7 +235,7 @@
235 235  )))
236 236  
237 237  (((
238 -[[image:1655257698953-697.png]]
128 +[[image:1654848616367-242.png]]
239 239  )))
240 240  
241 241  (((
... ... @@ -243,31 +243,21 @@
243 243  )))
244 244  
245 245  (((
246 -
247 -
248 -(% 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.
249 249  )))
250 250  
251 251  (((
252 -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.
253 253  )))
254 254  
255 255  [[image:image-20220607170145-1.jpeg]]
256 256  
257 257  
258 -(((
259 259  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
260 -)))
261 261  
262 -(((
263 263  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
264 -)))
265 265  
266 -(((
267 -
268 -
269 269  **Add APP EUI in the application**
270 -)))
271 271  
272 272  [[image:image-20220610161353-4.png]]
273 273  
... ... @@ -279,7 +279,6 @@
279 279  [[image:image-20220610161353-7.png]]
280 280  
281 281  
282 -
283 283  You can also choose to create the device manually.
284 284  
285 285   [[image:image-20220610161538-8.png]]
... ... @@ -292,17 +292,16 @@
292 292  
293 293  
294 294  
295 -(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
174 +(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
296 296  
297 297  
298 298  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
299 299  
300 -[[image:image-20220615095102-14.png]]
179 +[[image:image-20220610161724-10.png]]
301 301  
302 302  
303 -
304 304  (((
305 -(% 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.
306 306  )))
307 307  
308 308  [[image:1654849068701-275.png]]
... ... @@ -312,13 +312,11 @@
312 312  == 2.3  ​Uplink Payload ==
313 313  
314 314  (((
315 -(((
316 -LDDS20 will uplink payload via LoRaWAN with below payload format: 
193 +LDDS75 will uplink payload via LoRaWAN with below payload format: 
317 317  
318 -Uplink payload includes in total 8 bytes.
319 -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
320 320  )))
321 -)))
322 322  
323 323  (((
324 324  
... ... @@ -329,12 +329,12 @@
329 329  **Size (bytes)**
330 330  )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
331 331  |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
332 -[[Distance>>||anchor="H2.3.2A0Distance"]]
208 +[[Distance>>||anchor="H2.3.3A0Distance"]]
333 333  
334 334  (unit: mm)
335 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
336 -[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
337 -)))|[[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]]
338 338  
339 339  [[image:1654850511545-399.png]]
340 340  
... ... @@ -343,7 +343,7 @@
343 343  === 2.3.1  Battery Info ===
344 344  
345 345  
346 -Check the battery voltage for LDDS20.
222 +Check the battery voltage for LDDS75.
347 347  
348 348  Ex1: 0x0B45 = 2885mV
349 349  
... ... @@ -353,21 +353,17 @@
353 353  
354 354  === 2.3.2  Distance ===
355 355  
356 -(((
357 -Get the distance. Flat object range 20mm - 2000mm.
358 -)))
232 +Get the distance. Flat object range 280mm - 7500mm.
359 359  
360 -(((
361 -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.**
362 -)))
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.**
363 363  
364 -* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
365 -* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
366 366  
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.
367 367  
368 368  === 2.3.3  Interrupt Pin ===
369 369  
370 -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.
371 371  
372 372  **Example:**
373 373  
... ... @@ -393,18 +393,14 @@
393 393  
394 394  === 2.3.5  Sensor Flag ===
395 395  
396 -(((
397 397  0x01: Detect Ultrasonic Sensor
398 -)))
399 399  
400 -(((
401 401  0x00: No Ultrasonic Sensor
402 -)))
403 403  
404 404  
273 +===
274 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
405 405  
406 -=== 2.3.6  Decode payload in The Things Network ===
407 -
408 408  While using TTN network, you can add the payload format to decode the payload.
409 409  
410 410  
... ... @@ -412,42 +412,16 @@
412 412  
413 413  The payload decoder function for TTN V3 is here:
414 414  
415 -(((
416 -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/]]
417 -)))
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/]]
418 418  
419 419  
420 420  
421 -== 2.4  Downlink Payload ==
287 +== 2.4  Uplink Interval ==
422 422  
423 -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"]]
424 424  
425 -[[image:image-20220615100930-15.png]]
426 426  
427 427  
428 -**Examples:**
429 -
430 -
431 -* (% style="color:blue" %)**Set TDC**
432 -
433 -If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
434 -
435 -Payload:    01 00 00 1E    TDC=30S
436 -
437 -Payload:    01 00 00 3C    TDC=60S
438 -
439 -
440 -* (% style="color:blue" %)**Reset**
441 -
442 -If payload = 0x04FF, it will reset the LDDS20
443 -
444 -
445 -* (% style="color:blue" %)**CFM**
446 -
447 -Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
448 -
449 -
450 -
451 451  == 2.5  ​Show Data in DataCake IoT Server ==
452 452  
453 453  (((
... ... @@ -967,17 +967,10 @@
967 967  == 2.8  ​Firmware Change Log ==
968 968  
969 969  
970 -(((
971 971  **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/]]
972 -)))
973 973  
974 -(((
975 -
976 -)))
977 977  
978 -(((
979 979  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
980 -)))
981 981  
982 982  
983 983  
... ... @@ -986,11 +986,9 @@
986 986  
987 987  [[image:image-20220610172003-1.png]]
988 988  
989 -
990 990  [[image:image-20220610172003-2.png]]
991 991  
992 992  
993 -
994 994  == 2.10  Battery Analysis ==
995 995  
996 996  === 2.10.1  Battery Type ===
... ... @@ -1001,7 +1001,7 @@
1001 1001  The battery related documents as below:
1002 1002  
1003 1003  * (((
1004 -[[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]],
1005 1005  )))
1006 1006  * (((
1007 1007  [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
... ... @@ -1017,7 +1017,7 @@
1017 1017  === 2.10.2  Replace the battery ===
1018 1018  
1019 1019  (((
1020 -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.
1021 1021  )))
1022 1022  
1023 1023  (((
... ... @@ -1025,12 +1025,12 @@
1025 1025  )))
1026 1026  
1027 1027  (((
1028 -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)
1029 1029  )))
1030 1030  
1031 1031  
1032 1032  
1033 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
866 += 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
1034 1034  
1035 1035  (((
1036 1036  (((
... ... @@ -1040,7 +1040,7 @@
1040 1040  
1041 1041  * (((
1042 1042  (((
1043 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
876 +AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
1044 1044  )))
1045 1045  )))
1046 1046  * (((
... ... @@ -1121,9 +1121,7 @@
1121 1121  [[image:image-20220610172924-5.png]]
1122 1122  
1123 1123  
1124 -(((
1125 1125  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:
1126 -)))
1127 1127  
1128 1128  
1129 1129   [[image:image-20220610172924-6.png||height="601" width="860"]]
... ... @@ -1147,19 +1147,16 @@
1147 1147  (((
1148 1148  Format: Command Code (0x01) followed by 3 bytes time value.
1149 1149  
1150 -(((
1151 1151  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1152 -)))
1153 1153  
1154 1154  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1155 1155  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1156 1156  )))
1157 -)))
1158 1158  
1159 1159  
988 +
989 +)))
1160 1160  
1161 -
1162 -
1163 1163  == 3.3  Set Interrupt Mode ==
1164 1164  
1165 1165  Feature, Set Interrupt mode for GPIO_EXIT.
... ... @@ -1166,7 +1166,7 @@
1166 1166  
1167 1167  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1168 1168  
1169 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
1170 1170  
1171 1171  
1172 1172  (% style="color:#037691" %)**Downlink Command: 0x06**
... ... @@ -1173,72 +1173,115 @@
1173 1173  
1174 1174  Format: Command Code (0x06) followed by 3 bytes.
1175 1175  
1176 -(((
1177 1177  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1178 -)))
1179 1179  
1180 1180  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1181 1181  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1182 1182  
1183 -= 4.  FAQ =
1184 1184  
1185 -== 4.1  What is the frequency plan for LDDS75? ==
1186 1186  
1187 -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"]]
1188 1188  
1189 1189  
1013 += 6.  Use AT Command =
1190 1190  
1191 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1015 +== 6.1  Access AT Commands ==
1192 1192  
1193 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1194 -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.
1195 1195  
1019 +[[image:1654593668970-604.png]]
1196 1196  
1021 +**Connection:**
1197 1197  
1198 -== 4.3  Can I use LDDS75 in condensation environment? ==
1023 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1199 1199  
1200 -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**
1201 1201  
1027 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1202 1202  
1203 1203  
1204 -= 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 +)))
1205 1205  
1206 -== 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 +)))
1207 1207  
1208 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1209 1209  
1041 + [[image:1654593712276-618.png]]
1210 1210  
1211 -== 5.2  AT Command input doesn't work ==
1043 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1212 1212  
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 +(((
1213 1213  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 +)))
1214 1214  
1063 +
1064 +== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
1065 +
1066 +
1215 1215  (((
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 +(((
1216 1216  
1217 1217  )))
1218 1218  
1079 +(((
1080 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1081 +)))
1219 1219  
1083 +(((
1084 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1085 +)))
1086 +
1087 +
1088 +
1220 1220  = 6.  Order Info =
1221 1221  
1222 1222  
1223 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1092 +Part Number: (% style="color:blue" %)**LLDS12-XX**
1224 1224  
1225 1225  
1226 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1095 +(% style="color:blue" %)**XX**(%%): The default frequency band
1227 1227  
1228 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1229 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1230 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1231 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1232 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1233 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1234 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1235 -* (% 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
1236 1236  
1237 -(% style="color:blue" %)**YY**(%%): Battery Option
1106 +**YY**: Battery Option
1238 1238  
1239 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1240 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1108 +* **4**: 4000mAh battery
1109 +* **8**: 8500mAh battery
1241 1241  
1111 +
1112 +
1242 1242  = 7. ​ Packing Info =
1243 1243  
1244 1244  
... ... @@ -1253,6 +1253,8 @@
1253 1253  * Package Size / pcs : cm
1254 1254  * Weight / pcs : g
1255 1255  
1127 +
1128 +
1256 1256  = 8.  ​Support =
1257 1257  
1258 1258  * 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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