Skip to Content
Last modified by Mengting Qiu on 2025/08/06 17:02
From version 170.4
edited by Xiaoling
on 2022/06/15 09:40
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

Details

Page properties
Content
... ... @@ -143,6 +143,7 @@
143 143  [[image:image-20220615092044-12.png]]
144 144  
145 145  
146 +
146 146  (% style="color:blue" %)**Step3:   **(%%)Test the installation point.
147 147  
148 148  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.
... ... @@ -171,9 +171,9 @@
171 171  (% style="color:red" %)Ultrasonic coupling paste (%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
172 172  
173 173  
175 +
174 174  (% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 175  
176 -
177 177  Prepare Eproxy AB glue.
178 178  
179 179  Put Eproxy AB glue in the sensor and press it hard on the container installation point.
... ... @@ -222,7 +222,7 @@
222 222  == 2.1  How it works ==
223 223  
224 224  (((
225 -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.
226 226  )))
227 227  
228 228  (((
... ... @@ -238,7 +238,7 @@
238 238  )))
239 239  
240 240  (((
241 -[[image:1654848616367-242.png]]
242 +[[image:1655257698953-697.png]]
242 242  )))
243 243  
244 244  (((
... ... @@ -248,11 +248,11 @@
248 248  (((
249 249  
250 250  
251 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
252 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS20.
252 252  )))
253 253  
254 254  (((
255 -Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
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.
256 256  )))
257 257  
258 258  [[image:image-20220607170145-1.jpeg]]
... ... @@ -282,6 +282,7 @@
282 282  [[image:image-20220610161353-7.png]]
283 283  
284 284  
286 +
285 285  You can also choose to create the device manually.
286 286  
287 287   [[image:image-20220610161538-8.png]]
... ... @@ -294,16 +294,17 @@
294 294  
295 295  
296 296  
297 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
299 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
298 298  
299 299  
300 300  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
301 301  
302 -[[image:image-20220610161724-10.png]]
304 +[[image:image-20220615095102-14.png]]
303 303  
304 304  
307 +
305 305  (((
306 -(% 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.
307 307  )))
308 308  
309 309  [[image:1654849068701-275.png]]
... ... @@ -314,12 +314,10 @@
314 314  
315 315  (((
316 316  (((
317 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
318 -)))
320 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
319 319  
320 -(((
321 -Uplink payload includes in total 4 bytes.
322 -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).
323 323  )))
324 324  )))
325 325  
... ... @@ -346,7 +346,7 @@
346 346  === 2.3.1  Battery Info ===
347 347  
348 348  
349 -Check the battery voltage for LDDS75.
350 +Check the battery voltage for LDDS20.
350 350  
351 351  Ex1: 0x0B45 = 2885mV
352 352  
... ... @@ -357,20 +357,21 @@
357 357  === 2.3.2  Distance ===
358 358  
359 359  (((
360 -Get the distance. Flat object range 280mm - 7500mm.
361 +Get the distance. Flat object range 20mm - 2000mm.
361 361  )))
362 362  
363 363  (((
364 -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.**
365 365  )))
366 366  
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.
367 367  
368 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
369 -* 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.
370 370  
372 +
371 371  === 2.3.3  Interrupt Pin ===
372 372  
373 -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.
374 374  
375 375  **Example:**
376 376  
... ... @@ -416,7 +416,7 @@
416 416  The payload decoder function for TTN V3 is here:
417 417  
418 418  (((
419 -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/]]
420 420  )))
421 421  
422 422  
1655257698953-697.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +101.7 KB
Content
image-20220615095102-14.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +179.0 KB
Content