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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 171.2
edited by Xiaoling
on 2022/06/15 09:49
Change comment: There is no comment for this version
To version 172.8
edited by Xiaoling
on 2022/06/15 10:04
Change comment: There is no comment for this version

Summary

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101 101  * 8500mAh Battery for long term use
102 102  
103 103  
104 -
105 105  == 1.3  Suitable Container & Liquid ==
106 106  
107 107  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
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112 112  * Pure liquid without irregular deposition.
113 113  
114 114  
115 -
116 116  == 1.4  Mechanical ==
117 117  
118 118  [[image:image-20220615090910-1.png]]
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204 204  
205 205  
206 206  
207 -
208 208  == 1.7  Precautions ==
209 209  
210 210  * 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.
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213 213  
214 214  
215 215  
216 -
217 217  == 1.8  Pin mapping and power on ==
218 218  
219 219  
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227 227  == 2.1  How it works ==
228 228  
229 229  (((
230 -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 LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value.
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.
231 231  )))
232 232  
233 233  (((
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287 287  [[image:image-20220610161353-7.png]]
288 288  
289 289  
286 +
290 290  You can also choose to create the device manually.
291 291  
292 292   [[image:image-20220610161538-8.png]]
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299 299  
300 300  
301 301  
302 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
299 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
303 303  
304 304  
305 305  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
306 306  
307 -[[image:image-20220610161724-10.png]]
304 +[[image:image-20220615095102-14.png]]
308 308  
309 309  
307 +
310 310  (((
311 -(% 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.
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.
312 312  )))
313 313  
314 314  [[image:1654849068701-275.png]]
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319 319  
320 320  (((
321 321  (((
322 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
323 -)))
320 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
324 324  
325 -(((
326 -Uplink payload includes in total 4 bytes.
327 -Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
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).
328 328  )))
329 329  )))
330 330  
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351 351  === 2.3.1  Battery Info ===
352 352  
353 353  
354 -Check the battery voltage for LDDS75.
350 +Check the battery voltage for LDDS20.
355 355  
356 356  Ex1: 0x0B45 = 2885mV
357 357  
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362 362  === 2.3.2  Distance ===
363 363  
364 364  (((
365 -Get the distance. Flat object range 280mm - 7500mm.
361 +Get the distance. Flat object range 20mm - 2000mm.
366 366  )))
367 367  
368 368  (((
369 -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.**
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.**
370 370  )))
371 371  
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.
372 372  
373 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
374 -* 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.
375 375  
372 +
376 376  === 2.3.3  Interrupt Pin ===
377 377  
378 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
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.
379 379  
380 380  **Example:**
381 381  
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421 421  The payload decoder function for TTN V3 is here:
422 422  
423 423  (((
424 -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/]]
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/]]
425 425  )))
426 426  
427 427  
image-20220615095102-14.png
Author
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1 +XWiki.Xiaoling
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