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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 167.1
edited by Xiaoling
on 2022/06/15 09:20
Change comment: Uploaded new attachment "image-20220615092044-12.png", version {1}
To version 174.10
edited by Xiaoling
on 2022/06/15 10:44
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -100,8 +100,6 @@
100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
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.
... ... @@ -111,8 +111,6 @@
111 111  ** Pure non metal material: <10 mm
112 112  * Pure liquid without irregular deposition.
113 113  
114 -
115 -
116 116  == 1.4  Mechanical ==
117 117  
118 118  [[image:image-20220615090910-1.png]]
... ... @@ -122,35 +122,110 @@
122 122  
123 123  
124 124  
125 -== 1.5 ​ Applications ==
121 +== 1.5  Install LDDS20 ==
126 126  
127 -* Horizontal distance measurement
128 -* Liquid level measurement
129 -* Parking management system
130 -* Object proximity and presence detection
131 -* Intelligent trash can management system
132 -* Robot obstacle avoidance
133 -* Automatic control
134 -* Sewer
135 -* Bottom water level monitoring
136 136  
137 -== 1.6  Pin mapping and power on ==
124 +(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
138 138  
126 +LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
139 139  
140 -[[image:1654847583902-256.png]]
128 +[[image:image-20220615091045-3.png]]
141 141  
142 142  
143 143  
144 -= 2.  Configure LDDS75 to connect to LoRaWAN network =
132 +(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
145 145  
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 +
136 +[[image:image-20220615092010-11.png]]
137 +
138 +
139 +No polish needed if the container is shine metal surface without paint or non-metal container.
140 +
141 +[[image:image-20220615092044-12.png]]
142 +
143 +
144 +
145 +(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
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 +
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 +== 1.7  Precautions ==
202 +
203 +* 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.
204 +* 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.
205 +* 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.
206 +
207 +== 1.8  Pin mapping and power on ==
208 +
209 +
210 +[[image:1655257026882-201.png]]
211 +
212 +
213 +
214 += 2.  Configure LDDS20 to connect to LoRaWAN network =
215 +
216 +
146 146  == 2.1  How it works ==
147 147  
148 148  (((
149 -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
220 +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.
150 150  )))
151 151  
152 152  (((
153 -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.
224 +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.
154 154  )))
155 155  
156 156  
... ... @@ -162,7 +162,7 @@
162 162  )))
163 163  
164 164  (((
165 -[[image:1654848616367-242.png]]
236 +[[image:1655257698953-697.png]]
166 166  )))
167 167  
168 168  (((
... ... @@ -172,11 +172,11 @@
172 172  (((
173 173  
174 174  
175 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
246 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS20.
176 176  )))
177 177  
178 178  (((
179 -Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
250 +Each LDDS20 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
180 180  )))
181 181  
182 182  [[image:image-20220607170145-1.jpeg]]
... ... @@ -206,6 +206,7 @@
206 206  [[image:image-20220610161353-7.png]]
207 207  
208 208  
280 +
209 209  You can also choose to create the device manually.
210 210  
211 211   [[image:image-20220610161538-8.png]]
... ... @@ -218,16 +218,17 @@
218 218  
219 219  
220 220  
221 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
293 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
222 222  
223 223  
224 224  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
225 225  
226 -[[image:image-20220610161724-10.png]]
298 +[[image:image-20220615095102-14.png]]
227 227  
228 228  
301 +
229 229  (((
230 -(% 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.
303 +(% 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.
231 231  )))
232 232  
233 233  [[image:1654849068701-275.png]]
... ... @@ -238,12 +238,10 @@
238 238  
239 239  (((
240 240  (((
241 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
242 -)))
314 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
243 243  
244 -(((
245 -Uplink payload includes in total 4 bytes.
246 -Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
316 +Uplink payload includes in total 8 bytes.
317 +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).
247 247  )))
248 248  )))
249 249  
... ... @@ -270,7 +270,7 @@
270 270  === 2.3.1  Battery Info ===
271 271  
272 272  
273 -Check the battery voltage for LDDS75.
344 +Check the battery voltage for LDDS20.
274 274  
275 275  Ex1: 0x0B45 = 2885mV
276 276  
... ... @@ -281,20 +281,21 @@
281 281  === 2.3.2  Distance ===
282 282  
283 283  (((
284 -Get the distance. Flat object range 280mm - 7500mm.
355 +Get the distance. Flat object range 20mm - 2000mm.
285 285  )))
286 286  
287 287  (((
288 -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.**
359 +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.**
289 289  )))
290 290  
362 +* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
363 +* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
291 291  
292 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
293 -* 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.
294 294  
366 +
295 295  === 2.3.3  Interrupt Pin ===
296 296  
297 -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.
369 +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.
298 298  
299 299  **Example:**
300 300  
... ... @@ -340,699 +340,300 @@
340 340  The payload decoder function for TTN V3 is here:
341 341  
342 342  (((
343 -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/]]
415 +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/]]
344 344  )))
345 345  
346 346  
347 347  
348 -== 2.4  Uplink Interval ==
420 +== 2.4  Downlink Payload ==
349 349  
350 -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"]]
422 +By default, LDDS20 prints the downlink payload to console port.
351 351  
424 +[[image:image-20220615100930-15.png]]
352 352  
353 353  
354 -== 2.5  ​Show Data in DataCake IoT Server ==
427 +**Examples:**
355 355  
356 -(((
357 -[[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:
358 -)))
359 359  
360 -(((
361 -
362 -)))
430 +* (% style="color:blue" %)**Set TDC**
363 363  
364 -(((
365 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
366 -)))
432 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
367 367  
368 -(((
369 -(% 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:**
370 -)))
434 +Payload:    01 00 00 1E    TDC=30S
371 371  
436 +Payload:    01 00 00 3C    TDC=60S
372 372  
373 -[[image:1654592790040-760.png]]
374 374  
439 +* (% style="color:blue" %)**Reset**
375 375  
376 -[[image:1654592800389-571.png]]
441 +If payload = 0x04FF, it will reset the LDDS20
377 377  
378 378  
379 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
444 +* (% style="color:blue" %)**CFM**
380 380  
381 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
446 +Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
382 382  
383 -[[image:1654851029373-510.png]]
384 384  
385 385  
386 -After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
450 +== 2.5  ​Show Data in DataCake IoT Server ==
387 387  
388 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
389 -
390 -
391 -
392 -== 2.6  Frequency Plans ==
393 -
394 394  (((
395 -The LDDS75 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.
453 +[[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:
396 396  )))
397 397  
398 -
399 -
400 -=== 2.6.1  EU863-870 (EU868) ===
401 -
402 402  (((
403 -(% style="color:blue" %)**Uplink:**
404 -)))
405 -
406 -(((
407 -868.1 - SF7BW125 to SF12BW125
408 -)))
409 -
410 -(((
411 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
412 -)))
413 -
414 -(((
415 -868.5 - SF7BW125 to SF12BW125
416 -)))
417 -
418 -(((
419 -867.1 - SF7BW125 to SF12BW125
420 -)))
421 -
422 -(((
423 -867.3 - SF7BW125 to SF12BW125
424 -)))
425 -
426 -(((
427 -867.5 - SF7BW125 to SF12BW125
428 -)))
429 -
430 -(((
431 -867.7 - SF7BW125 to SF12BW125
432 -)))
433 -
434 -(((
435 -867.9 - SF7BW125 to SF12BW125
436 -)))
437 -
438 -(((
439 -868.8 - FSK
440 -)))
441 -
442 -(((
443 443  
444 444  )))
445 445  
446 446  (((
447 -(% style="color:blue" %)**Downlink:**
461 +(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
448 448  )))
449 449  
450 450  (((
451 -Uplink channels 1-9 (RX1)
465 +(% 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:**
452 452  )))
453 453  
454 -(((
455 -869.525 - SF9BW125 (RX2 downlink only)
456 -)))
457 457  
469 +[[image:1654592790040-760.png]]
458 458  
459 459  
460 -=== 2.6.2  US902-928(US915) ===
472 +[[image:1654592800389-571.png]]
461 461  
462 -(((
463 -Used in USA, Canada and South America. Default use CHE=2
464 464  
465 -(% style="color:blue" %)**Uplink:**
475 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
466 466  
467 -903.9 - SF7BW125 to SF10BW125
477 +(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.(% style="color:red" %)(Note: LDDS20 use same payload as LDDS75)(%%)**
468 468  
469 -904.1 - SF7BW125 to SF10BW125
479 +[[image:1654851029373-510.png]]
470 470  
471 -904.3 - SF7BW125 to SF10BW125
472 472  
473 -904.5 - SF7BW125 to SF10BW125
482 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
474 474  
475 -904.7 - SF7BW125 to SF10BW125
484 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
476 476  
477 -904.9 - SF7BW125 to SF10BW125
478 478  
479 -905.1 - SF7BW125 to SF10BW125
480 480  
481 -905.3 - SF7BW125 to SF10BW125
488 +== 2.6  LED Indicator ==
482 482  
490 +The LDDS20 has an internal LED which is to show the status of different state.
483 483  
484 -(% style="color:blue" %)**Downlink:**
485 485  
486 -923.3 - SF7BW500 to SF12BW500
493 +* Blink once when device power on.
494 +* The device detects the sensor and flashes 5 times.
495 +* Solid ON for 5 seconds once device successful Join the network.
496 +* Blink once when device transmit a packet.
487 487  
488 -923.9 - SF7BW500 to SF12BW500
489 489  
490 -924.5 - SF7BW500 to SF12BW500
491 491  
492 -925.1 - SF7BW500 to SF12BW500
500 +== 2.7  ​Firmware Change Log ==
493 493  
494 -925.7 - SF7BW500 to SF12BW500
495 495  
496 -926.3 - SF7BW500 to SF12BW500
497 -
498 -926.9 - SF7BW500 to SF12BW500
499 -
500 -927.5 - SF7BW500 to SF12BW500
501 -
502 -923.3 - SF12BW500(RX2 downlink only)
503 -
504 -
505 -
506 -)))
507 -
508 -=== 2.6.3  CN470-510 (CN470) ===
509 -
510 510  (((
511 -Used in China, Default use CHE=1
504 +**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/]]
512 512  )))
513 513  
514 514  (((
515 -(% style="color:blue" %)**Uplink:**
516 -)))
517 -
518 -(((
519 -486.3 - SF7BW125 to SF12BW125
520 -)))
521 -
522 -(((
523 -486.5 - SF7BW125 to SF12BW125
524 -)))
525 -
526 -(((
527 -486.7 - SF7BW125 to SF12BW125
528 -)))
529 -
530 -(((
531 -486.9 - SF7BW125 to SF12BW125
532 -)))
533 -
534 -(((
535 -487.1 - SF7BW125 to SF12BW125
536 -)))
537 -
538 -(((
539 -487.3 - SF7BW125 to SF12BW125
540 -)))
541 -
542 -(((
543 -487.5 - SF7BW125 to SF12BW125
544 -)))
545 -
546 -(((
547 -487.7 - SF7BW125 to SF12BW125
548 -)))
549 -
550 -(((
551 551  
552 552  )))
553 553  
554 554  (((
555 -(% style="color:blue" %)**Downlink:**
512 +**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
556 556  )))
557 557  
558 -(((
559 -506.7 - SF7BW125 to SF12BW125
560 -)))
561 561  
562 -(((
563 -506.9 - SF7BW125 to SF12BW125
564 -)))
565 565  
566 -(((
567 -507.1 - SF7BW125 to SF12BW125
568 -)))
517 +== 2.8  Battery Analysis ==
569 569  
570 -(((
571 -507.3 - SF7BW125 to SF12BW125
572 -)))
573 573  
574 -(((
575 -507.5 - SF7BW125 to SF12BW125
576 -)))
577 577  
578 -(((
579 -507.7 - SF7BW125 to SF12BW125
580 -)))
581 581  
582 -(((
583 -507.9 - SF7BW125 to SF12BW125
584 -)))
522 +=== 2.8.1  Battery Type ===
585 585  
586 -(((
587 -508.1 - SF7BW125 to SF12BW125
588 -)))
524 +The LDDS20 battery is a combination of a 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
589 589  
590 -(((
591 -505.3 - SF12BW125 (RX2 downlink only)
592 -)))
593 593  
527 +The battery related documents as below:
594 594  
595 -
596 -=== 2.6.4  AU915-928(AU915) ===
597 -
598 -(((
599 -Default use CHE=2
600 -
601 -(% style="color:blue" %)**Uplink:**
602 -
603 -916.8 - SF7BW125 to SF12BW125
604 -
605 -917.0 - SF7BW125 to SF12BW125
606 -
607 -917.2 - SF7BW125 to SF12BW125
608 -
609 -917.4 - SF7BW125 to SF12BW125
610 -
611 -917.6 - SF7BW125 to SF12BW125
612 -
613 -917.8 - SF7BW125 to SF12BW125
614 -
615 -918.0 - SF7BW125 to SF12BW125
616 -
617 -918.2 - SF7BW125 to SF12BW125
618 -
619 -
620 -(% style="color:blue" %)**Downlink:**
621 -
622 -923.3 - SF7BW500 to SF12BW500
623 -
624 -923.9 - SF7BW500 to SF12BW500
625 -
626 -924.5 - SF7BW500 to SF12BW500
627 -
628 -925.1 - SF7BW500 to SF12BW500
629 -
630 -925.7 - SF7BW500 to SF12BW500
631 -
632 -926.3 - SF7BW500 to SF12BW500
633 -
634 -926.9 - SF7BW500 to SF12BW500
635 -
636 -927.5 - SF7BW500 to SF12BW500
637 -
638 -923.3 - SF12BW500(RX2 downlink only)
639 -
640 -
641 -
529 +* (((
530 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
642 642  )))
643 -
644 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
645 -
646 -(((
647 -(% style="color:blue" %)**Default Uplink channel:**
532 +* (((
533 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
648 648  )))
649 -
650 -(((
651 -923.2 - SF7BW125 to SF10BW125
535 +* (((
536 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
652 652  )))
653 653  
654 -(((
655 -923.4 - SF7BW125 to SF10BW125
656 -)))
539 + [[image:image-20220615102527-16.png]]
657 657  
658 -(((
659 -
660 -)))
661 661  
662 -(((
663 -(% style="color:blue" %)**Additional Uplink Channel**:
664 -)))
665 665  
666 -(((
667 -(OTAA mode, channel added by JoinAccept message)
668 -)))
543 +== 2.8.2  Battery Note ==
669 669  
670 -(((
671 -
672 -)))
545 +The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to uplink data, then the battery life may be decreased.
673 673  
674 -(((
675 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
676 -)))
677 677  
678 -(((
679 -922.2 - SF7BW125 to SF10BW125
680 -)))
681 681  
682 -(((
683 -922.4 - SF7BW125 to SF10BW125
684 -)))
549 +=== 2.8.3  Replace the battery ===
685 685  
686 686  (((
687 -922.6 - SF7BW125 to SF10BW125
552 +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.
688 688  )))
689 689  
690 690  (((
691 -922.8 - SF7BW125 to SF10BW125
692 -)))
693 -
694 -(((
695 -923.0 - SF7BW125 to SF10BW125
696 -)))
697 -
698 -(((
699 -922.0 - SF7BW125 to SF10BW125
700 -)))
701 -
702 -(((
703 703  
704 704  )))
705 705  
706 706  (((
707 -(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
560 +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)
708 708  )))
709 709  
710 -(((
711 -923.6 - SF7BW125 to SF10BW125
712 -)))
713 713  
714 -(((
715 -923.8 - SF7BW125 to SF10BW125
716 -)))
717 717  
718 -(((
719 -924.0 - SF7BW125 to SF10BW125
720 -)))
565 +== 2.8.4  Battery Life Analyze ==
721 721  
722 -(((
723 -924.2 - SF7BW125 to SF10BW125
724 -)))
567 +Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
725 725  
726 -(((
727 -924.4 - SF7BW125 to SF10BW125
728 -)))
569 +[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
729 729  
730 -(((
731 -924.6 - SF7BW125 to SF10BW125
732 -)))
733 733  
734 -(((
735 -
736 -)))
737 737  
738 -(((
739 -(% style="color:blue" %)**Downlink:**
740 -)))
573 += 3.  Using the AT Commands =
741 741  
742 742  (((
743 -Uplink channels 1-8 (RX1)
744 -)))
745 -
746 746  (((
747 -923.2 - SF10BW125 (RX2)
748 -)))
749 -
750 -
751 -
752 -=== 2.6.6  KR920-923 (KR920) ===
753 -
754 -(((
755 -(% style="color:blue" %)**Default channel:**
756 -)))
757 -
758 -(((
759 -922.1 - SF7BW125 to SF12BW125
760 -)))
761 -
762 -(((
763 -922.3 - SF7BW125 to SF12BW125
764 -)))
765 -
766 -(((
767 -922.5 - SF7BW125 to SF12BW125
768 -)))
769 -
770 -(((
771 771  
772 772  )))
773 -
774 -(((
775 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
776 776  )))
777 777  
778 -(((
779 -922.1 - SF7BW125 to SF12BW125
780 -)))
581 +== 3.1  Access AT Commands ==
781 781  
782 -(((
783 -922.3 - SF7BW125 to SF12BW125
784 -)))
583 +LDDS20 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS20 for using AT command, as below.
785 785  
786 -(((
787 -922.5 - SF7BW125 to SF12BW125
788 -)))
789 789  
790 -(((
791 -922.7 - SF7BW125 to SF12BW125
792 -)))
586 +[[image:image-20220610172924-4.png||height="483" width="988"]]
793 793  
794 -(((
795 -922.9 - SF7BW125 to SF12BW125
796 -)))
797 797  
798 -(((
799 -923.1 - SF7BW125 to SF12BW125
800 -)))
589 +Or if you have below board, use below connection:
801 801  
802 -(((
803 -923.3 - SF7BW125 to SF12BW125
804 -)))
805 805  
806 -(((
807 -
808 -)))
592 +[[image:image-20220610172924-5.png]]
809 809  
810 -(((
811 -(% style="color:blue" %)**Downlink:**
812 -)))
813 813  
814 814  (((
815 -Uplink channels 1-7(RX1)
596 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS20. LDDS20 will output system info once power on as below:
816 816  )))
817 817  
818 -(((
819 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
820 -)))
821 821  
600 + [[image:image-20220610172924-6.png||height="601" width="860"]]
822 822  
602 +Below are the available commands, a more detailed AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/]].
823 823  
824 -=== 2.6.7  IN865-867 (IN865) ===
825 825  
826 -(((
827 -(% style="color:blue" %)**Uplink:**
828 -)))
605 +AT+<CMD>?  :  Help on <CMD>
829 829  
830 -(((
831 -865.0625 - SF7BW125 to SF12BW125
832 -)))
607 +AT+<CMD>  :  Run <CMD>
833 833  
834 -(((
835 -865.4025 - SF7BW125 to SF12BW125
836 -)))
609 +AT+<CMD>=<value>  :  Set the value
837 837  
838 -(((
839 -865.9850 - SF7BW125 to SF12BW125
840 -)))
611 +AT+<CMD>=?  :  Get the value
841 841  
842 -(((
843 -
844 -)))
845 845  
846 -(((
847 -(% style="color:blue" %)**Downlink:**
848 -)))
614 +**General Commands** : 
849 849  
850 -(((
851 -Uplink channels 1-3 (RX1)
852 -)))
616 +AT                    : Attention       
853 853  
854 -(((
855 -866.550 - SF10BW125 (RX2)
856 -)))
618 +AT?                            : Short Help     
857 857  
620 +ATZ                            : MCU Reset    
858 858  
622 +AT+TDC           : Application Data Transmission Interval 
859 859  
860 -== 2.7  LED Indicator ==
861 861  
862 -The LDDS75 has an internal LED which is to show the status of different state.
625 +**Keys, IDs and EUIs management:**
863 863  
627 +AT+APPEUI              : Application EUI      
864 864  
865 -* Blink once when device power on.
866 -* The device detects the sensor and flashes 5 times.
867 -* Solid ON for 5 seconds once device successful Join the network.
868 -* Blink once when device transmit a packet.
629 +AT+APPKEY              : Application Key     
869 869  
870 -== 2.8  ​Firmware Change Log ==
631 +AT+APPSKEY            : Application Session Key
871 871  
633 +AT+DADDR              : Device Address     
872 872  
873 -(((
874 -**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/]]
875 -)))
635 +AT+DEUI                   : Device EUI     
876 876  
877 -(((
878 -
879 -)))
637 +AT+NWKID               : Network ID (You can enter this command change only after successful network connection) 
880 880  
881 -(((
882 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
883 -)))
639 +AT+NWKSKEY          : Network Session Key Joining and sending date on LoRa network  
884 884  
641 +AT+CFM          : Confirm Mode       
885 885  
643 +AT+CFS                     : Confirm Status       
886 886  
887 -== 2.9  Mechanical ==
645 +AT+JOIN          : Join LoRa? Network       
888 888  
647 +AT+NJM          : LoRa? Network Join Mode    
889 889  
890 -[[image:image-20220610172003-1.png]]
649 +AT+NJS                     : LoRa? Network Join Status    
891 891  
651 +AT+RECV                  : Print Last Received Data in Raw Format
892 892  
893 -[[image:image-20220610172003-2.png]]
653 +AT+RECVB                : Print Last Received Data in Binary Format      
894 894  
655 +AT+SEND                  : Send Text Data      
895 895  
657 +AT+SENB                  : Send Hexadecimal Data
896 896  
897 -== 2.10  Battery Analysis ==
898 898  
899 -=== 2.10.1  Battery Type ===
660 +**LoRa Network Management :**
900 900  
901 -The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
662 +AT+ADR          : Adaptive Rate
902 902  
664 +AT+CLASS                : LoRa Class(Currently only support class A
903 903  
904 -The battery related documents as below:
666 +AT+DCS           : Duty Cycle Setting 
905 905  
906 -* (((
907 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
908 -)))
909 -* (((
910 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
911 -)))
912 -* (((
913 -[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
914 -)))
668 +AT+DR                      : Data Rate (Can Only be Modified after ADR=0)     
915 915  
916 - [[image:image-20220610172400-3.png]]
670 +AT+FCD           : Frame Counter Downlink       
917 917  
672 +AT+FCU           : Frame Counter Uplink   
918 918  
674 +AT+JN1DL                : Join Accept Delay1
919 919  
920 -=== 2.10.2  Replace the battery ===
676 +AT+JN2DL                : Join Accept Delay2
921 921  
922 -(((
923 -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.
924 -)))
678 +AT+PNM                   : Public Network Mode   
925 925  
926 -(((
927 -
928 -)))
680 +AT+RX1DL                : Receive Delay1      
929 929  
930 -(((
931 -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)
932 -)))
682 +AT+RX2DL                : Receive Delay2      
933 933  
684 +AT+RX2DR               : Rx2 Window Data Rate 
934 934  
686 +AT+RX2FQ               : Rx2 Window Frequency
935 935  
936 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
688 +AT+TXP           : Transmit Power
937 937  
938 -(((
939 -(((
940 -Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
941 -)))
942 -)))
943 943  
944 -* (((
945 -(((
946 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
947 -)))
948 -)))
949 -* (((
950 -(((
951 -LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
952 -)))
953 -)))
691 +**Information :**
954 954  
955 -(((
956 -(((
957 -
958 -)))
693 +AT+RSSI           : RSSI of the Last Received Packet   
959 959  
960 -(((
961 -There are two kinds of commands to configure LDDS75, they are:
962 -)))
963 -)))
695 +AT+SNR           : SNR of the Last Received Packet   
964 964  
965 -* (((
966 -(((
967 -(% style="color:#4f81bd" %)** General Commands**.
968 -)))
969 -)))
697 +AT+VER           : Image Version and Frequency Band       
970 970  
971 -(((
972 -(((
973 -These commands are to configure:
974 -)))
975 -)))
699 +AT+FDR           : Factory Data Reset
976 976  
977 -* (((
978 -(((
979 -General system settings like: uplink interval.
980 -)))
981 -)))
982 -* (((
983 -(((
984 -LoRaWAN protocol & radio related command.
985 -)))
986 -)))
701 +AT+PORT                  : Application Port    
987 987  
988 -(((
989 -(((
990 -They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
991 -)))
992 -)))
703 +AT+CHS           : Get or Set Frequency (Unit: Hz) for Single Channel Mode
993 993  
994 -(((
995 -(((
996 -
997 -)))
998 -)))
705 + AT+CHE                   : Get or Set eight channels mode, Only for US915, AU915, CN470
999 999  
1000 -* (((
1001 -(((
1002 -(% style="color:#4f81bd" %)** Commands special design for LDDS75**
1003 -)))
1004 -)))
1005 1005  
1006 -(((
1007 -(((
1008 -These commands only valid for LDDS75, as below:
1009 -)))
1010 -)))
1011 1011  
1012 -
1013 -
1014 -== 3.1  Access AT Commands ==
1015 -
1016 -LDDS75 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS75 for using AT command, as below.
1017 -
1018 -[[image:image-20220610172924-4.png||height="483" width="988"]]
1019 -
1020 -
1021 -Or if you have below board, use below connection:
1022 -
1023 -
1024 -[[image:image-20220610172924-5.png]]
1025 -
1026 -
1027 -(((
1028 -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:
1029 -)))
1030 -
1031 -
1032 - [[image:image-20220610172924-6.png||height="601" width="860"]]
1033 -
1034 -
1035 -
1036 1036  == 3.2  Set Transmit Interval Time ==
1037 1037  
1038 1038  Feature: Change LoRaWAN End Node Transmit Interval.
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