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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 172.6
edited by Xiaoling
on 2022/06/15 09:58
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To version 147.7
edited by Xiaoling
on 2022/06/10 17:41
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Summary

Details

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Title
... ... @@ -1,1 +1,1 @@
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
... ... @@ -98,140 +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  
62 +=== 1.3.1  Rated environmental conditions ===
104 104  
105 -== 1.3  Suitable Container & Liquid ==
64 +[[image:image-20220610154839-1.png]]
106 106  
107 -* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
108 -* Container shape is regular, and surface is smooth.
109 -* Container Thickness:
110 -** Pure metal material.  2~~8mm, best is 3~~5mm
111 -** Pure non metal material: <10 mm
112 -* Pure liquid without irregular deposition.
66 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
113 113  
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)**
114 114  
115 115  
116 -== 1.4  Mechanical ==
117 117  
118 -[[image:image-20220615090910-1.png]]
72 +=== 1.3.2  Effective measurement range Reference beam pattern ===
119 119  
74 +**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
120 120  
121 -[[image:image-20220615090910-2.png]]
122 122  
123 123  
78 +[[image:1654852253176-749.png]]
124 124  
125 -== 1.5  Install LDDS20 ==
126 126  
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.**
127 127  
128 -(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
129 129  
130 -LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
84 +[[image:1654852175653-550.png]](% style="display:none" %) ** **
131 131  
132 -[[image:image-20220615091045-3.png]]
133 133  
134 134  
88 +== 1.5 ​ Applications ==
135 135  
136 -(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
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
137 137  
138 -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.
100 +== 1.6  Pin mapping and power on ==
139 139  
140 -[[image:image-20220615092010-11.png]]
141 141  
103 +[[image:1654847583902-256.png]]
142 142  
143 -No polish needed if the container is shine metal surface without paint or non-metal container.
144 144  
145 -[[image:image-20220615092044-12.png]]
146 146  
107 += 2.  Configure LDDS75 to connect to LoRaWAN network =
147 147  
148 -
149 -(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
150 -
151 -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.
152 -
153 -
154 -It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
155 -
156 -[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
157 -
158 -
159 -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.
160 -
161 -
162 -(% style="color:red" %)**LED Status:**
163 -
164 -* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
165 -
166 -* (% 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.
167 -* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
168 -
169 -LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
170 -
171 -
172 -(% style="color:red" %)**Note 2:**
173 -
174 -(% 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.
175 -
176 -
177 -
178 -(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
179 -
180 -Prepare Eproxy AB glue.
181 -
182 -Put Eproxy AB glue in the sensor and press it hard on the container installation point.
183 -
184 -Reset LDDS20 and see if the BLUE LED is slowly blinking.
185 -
186 -[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
187 -
188 -
189 -(% style="color:red" %)**Note 1:**
190 -
191 -Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
192 -
193 -
194 -(% style="color:red" %)**Note 2:**
195 -
196 -(% 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.
197 -
198 -
199 -
200 -== 1.6 ​ Applications ==
201 -
202 -* Smart liquid control solution.
203 -* Smart liquefied gas solution.
204 -
205 -
206 -
207 -
208 -== 1.7  Precautions ==
209 -
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.
211 -* 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.
212 -* 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.
213 -
214 -
215 -
216 -
217 -== 1.8  Pin mapping and power on ==
218 -
219 -
220 -[[image:1655257026882-201.png]]
221 -
222 -
223 -
224 -= 2.  Configure LDDS20 to connect to LoRaWAN network =
225 -
226 -
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.
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
231 231  )))
232 232  
233 233  (((
234 -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.
235 235  )))
236 236  
237 237  
... ... @@ -243,7 +243,7 @@
243 243  )))
244 244  
245 245  (((
246 -[[image:1655257698953-697.png]]
128 +[[image:1654848616367-242.png]]
247 247  )))
248 248  
249 249  (((
... ... @@ -251,31 +251,21 @@
251 251  )))
252 252  
253 253  (((
254 -
255 -
256 -(% 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.
257 257  )))
258 258  
259 259  (((
260 -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.
261 261  )))
262 262  
263 263  [[image:image-20220607170145-1.jpeg]]
264 264  
265 265  
266 -(((
267 267  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
268 -)))
269 269  
270 -(((
271 271  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
272 -)))
273 273  
274 -(((
275 -
276 -
277 277  **Add APP EUI in the application**
278 -)))
279 279  
280 280  [[image:image-20220610161353-4.png]]
281 281  
... ... @@ -287,7 +287,6 @@
287 287  [[image:image-20220610161353-7.png]]
288 288  
289 289  
290 -
291 291  You can also choose to create the device manually.
292 292  
293 293   [[image:image-20220610161538-8.png]]
... ... @@ -300,17 +300,16 @@
300 300  
301 301  
302 302  
303 -(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
174 +(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
304 304  
305 305  
306 306  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
307 307  
308 -[[image:image-20220615095102-14.png]]
179 +[[image:image-20220610161724-10.png]]
309 309  
310 310  
311 -
312 312  (((
313 -(% 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.
314 314  )))
315 315  
316 316  [[image:1654849068701-275.png]]
... ... @@ -320,13 +320,11 @@
320 320  == 2.3  ​Uplink Payload ==
321 321  
322 322  (((
323 -(((
324 -LDDS20 will uplink payload via LoRaWAN with below payload format:
193 +LDDS75 will uplink payload via LoRaWAN with below payload format: 
325 325  
326 -Uplink payload includes in total 8 bytes.
327 -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
328 328  )))
329 -)))
330 330  
331 331  (((
332 332  
... ... @@ -337,12 +337,12 @@
337 337  **Size (bytes)**
338 338  )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
339 339  |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
340 -[[Distance>>||anchor="H2.3.2A0Distance"]]
208 +[[Distance>>||anchor="H2.3.3A0Distance"]]
341 341  
342 342  (unit: mm)
343 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
344 -[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
345 -)))|[[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]]
346 346  
347 347  [[image:1654850511545-399.png]]
348 348  
... ... @@ -351,7 +351,7 @@
351 351  === 2.3.1  Battery Info ===
352 352  
353 353  
354 -Check the battery voltage for LDDS20.
222 +Check the battery voltage for LDDS75.
355 355  
356 356  Ex1: 0x0B45 = 2885mV
357 357  
... ... @@ -361,24 +361,17 @@
361 361  
362 362  === 2.3.2  Distance ===
363 363  
364 -(((
365 -Get the distance. Flat object range 20mm - 2000mm.
366 -)))
232 +Get the distance. Flat object range 280mm - 7500mm.
367 367  
368 -(((
369 -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 -)))
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.**
371 371  
372 372  
373 373  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
374 374  * 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  
376 -
377 -
378 -
379 379  === 2.3.3  Interrupt Pin ===
380 380  
381 -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.
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.
382 382  
383 383  **Example:**
384 384  
... ... @@ -404,18 +404,14 @@
404 404  
405 405  === 2.3.5  Sensor Flag ===
406 406  
407 -(((
408 408  0x01: Detect Ultrasonic Sensor
409 -)))
410 410  
411 -(((
412 412  0x00: No Ultrasonic Sensor
413 -)))
414 414  
415 415  
273 +===
274 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
416 416  
417 -=== 2.3.6  Decode payload in The Things Network ===
418 -
419 419  While using TTN network, you can add the payload format to decode the payload.
420 420  
421 421  
... ... @@ -423,9 +423,7 @@
423 423  
424 424  The payload decoder function for TTN V3 is here:
425 425  
426 -(((
427 427  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/]]
428 -)))
429 429  
430 430  
431 431  
... ... @@ -954,17 +954,10 @@
954 954  == 2.8  ​Firmware Change Log ==
955 955  
956 956  
957 -(((
958 958  **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/]]
959 -)))
960 960  
961 -(((
962 -
963 -)))
964 964  
965 -(((
966 966  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
967 -)))
968 968  
969 969  
970 970  
... ... @@ -973,11 +973,9 @@
973 973  
974 974  [[image:image-20220610172003-1.png]]
975 975  
976 -
977 977  [[image:image-20220610172003-2.png]]
978 978  
979 979  
980 -
981 981  == 2.10  Battery Analysis ==
982 982  
983 983  === 2.10.1  Battery Type ===
... ... @@ -988,7 +988,7 @@
988 988  The battery related documents as below:
989 989  
990 990  * (((
991 -[[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]],
992 992  )))
993 993  * (((
994 994  [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
... ... @@ -1004,7 +1004,7 @@
1004 1004  === 2.10.2  Replace the battery ===
1005 1005  
1006 1006  (((
1007 -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.
1008 1008  )))
1009 1009  
1010 1010  (((
... ... @@ -1012,12 +1012,12 @@
1012 1012  )))
1013 1013  
1014 1014  (((
1015 -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)
1016 1016  )))
1017 1017  
1018 1018  
1019 1019  
1020 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
866 += 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
1021 1021  
1022 1022  (((
1023 1023  (((
... ... @@ -1027,7 +1027,7 @@
1027 1027  
1028 1028  * (((
1029 1029  (((
1030 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
876 +AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
1031 1031  )))
1032 1032  )))
1033 1033  * (((
... ... @@ -1108,9 +1108,7 @@
1108 1108  [[image:image-20220610172924-5.png]]
1109 1109  
1110 1110  
1111 -(((
1112 1112  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:
1113 -)))
1114 1114  
1115 1115  
1116 1116   [[image:image-20220610172924-6.png||height="601" width="860"]]
... ... @@ -1134,19 +1134,16 @@
1134 1134  (((
1135 1135  Format: Command Code (0x01) followed by 3 bytes time value.
1136 1136  
1137 -(((
1138 1138  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1139 -)))
1140 1140  
1141 1141  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1142 1142  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1143 1143  )))
1144 -)))
1145 1145  
1146 1146  
988 +
989 +)))
1147 1147  
1148 -
1149 -
1150 1150  == 3.3  Set Interrupt Mode ==
1151 1151  
1152 1152  Feature, Set Interrupt mode for GPIO_EXIT.
... ... @@ -1153,7 +1153,7 @@
1153 1153  
1154 1154  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1155 1155  
1156 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
1157 1157  
1158 1158  
1159 1159  (% style="color:#037691" %)**Downlink Command: 0x06**
... ... @@ -1160,78 +1160,207 @@
1160 1160  
1161 1161  Format: Command Code (0x06) followed by 3 bytes.
1162 1162  
1163 -(((
1164 1164  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1165 -)))
1166 1166  
1167 1167  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1168 1168  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1169 1169  
1170 -= 4.  FAQ =
1171 1171  
1172 -== 4.1  What is the frequency plan for LDDS75? ==
1010 += 5.  Battery & How to replace =
1173 1173  
1174 -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"]]
1012 +== 5.1  Battery Type ==
1175 1175  
1014 +(((
1015 +LLDS12 is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.
1016 +)))
1176 1176  
1018 +(((
1019 +The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1020 +)))
1177 1177  
1178 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1022 +[[image:1654593587246-335.png]]
1179 1179  
1180 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1181 -When downloading the images, choose the required image file for download. ​
1182 1182  
1025 +Minimum Working Voltage for the LLDS12:
1183 1183  
1027 +LLDS12:  2.45v ~~ 3.6v
1184 1184  
1185 -== 4.3  Can I use LDDS75 in condensation environment? ==
1186 1186  
1187 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1188 1188  
1031 +== 5.2  Replace Battery ==
1189 1189  
1033 +(((
1034 +Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
1035 +)))
1190 1190  
1191 -= 5.  Trouble Shooting =
1037 +(((
1038 +And make sure the positive and negative pins match.
1039 +)))
1192 1192  
1193 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1194 1194  
1195 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1196 1196  
1043 +== 5.3  Power Consumption Analyze ==
1197 1197  
1198 -== 5.2  AT Command input doesn't work ==
1045 +(((
1046 +Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
1047 +)))
1199 1199  
1049 +(((
1050 +Instruction to use as below:
1051 +)))
1052 +
1053 +
1054 +**Step 1**: Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
1055 +
1056 +[[https:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
1057 +
1058 +
1059 +**Step 2**: Open it and choose
1060 +
1061 +* Product Model
1062 +* Uplink Interval
1063 +* Working Mode
1064 +
1065 +And the Life expectation in difference case will be shown on the right.
1066 +
1067 +[[image:1654593605679-189.png]]
1068 +
1069 +
1070 +The battery related documents as below:
1071 +
1072 +* (((
1073 +[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1074 +)))
1075 +* (((
1076 +[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
1077 +)))
1078 +* (((
1079 +[[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]]
1080 +)))
1081 +
1082 +[[image:image-20220607172042-11.png]]
1083 +
1084 +
1085 +
1086 +=== 5.3.1  ​Battery Note ===
1087 +
1088 +(((
1089 +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 transmit LoRa, then the battery life may be decreased.
1090 +)))
1091 +
1092 +
1093 +
1094 +=== ​5.3.2  Replace the battery ===
1095 +
1096 +(((
1097 +You can change the battery in the LLDS12.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.
1098 +)))
1099 +
1100 +(((
1101 +The default battery pack of LLDS12 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 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)
1102 +)))
1103 +
1104 +
1105 +
1106 += 6.  Use AT Command =
1107 +
1108 +== 6.1  Access AT Commands ==
1109 +
1110 +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.
1111 +
1112 +[[image:1654593668970-604.png]]
1113 +
1114 +**Connection:**
1115 +
1116 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1117 +
1118 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1119 +
1120 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1121 +
1122 +
1123 +(((
1124 +(((
1125 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1126 +)))
1127 +
1128 +(((
1129 +LLDS12 will output system info once power on as below:
1130 +)))
1131 +)))
1132 +
1133 +
1134 + [[image:1654593712276-618.png]]
1135 +
1136 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1137 +
1138 +
1139 += 7.  FAQ =
1140 +
1141 +== 7.1  How to change the LoRa Frequency Bands/Region ==
1142 +
1143 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1144 +When downloading the images, choose the required image file for download. ​
1145 +
1146 +
1147 += 8.  Trouble Shooting =
1148 +
1149 +== 8.1  AT Commands input doesn’t work ==
1150 +
1151 +
1152 +(((
1200 1200  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.
1154 +)))
1201 1201  
1156 +
1157 +== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
1158 +
1159 +
1202 1202  (((
1161 +(% 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.)
1162 +)))
1163 +
1164 +(((
1165 +Troubleshooting: Please avoid use of this product under such circumstance in practice.
1166 +)))
1167 +
1168 +(((
1203 1203  
1204 1204  )))
1205 1205  
1172 +(((
1173 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1174 +)))
1206 1206  
1207 -= 6.  Order Info =
1176 +(((
1177 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1178 +)))
1208 1208  
1209 1209  
1210 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1211 1211  
1182 += 9.  Order Info =
1212 1212  
1213 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1214 1214  
1215 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1216 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1217 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1218 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1219 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1220 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1221 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1222 -* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1185 +Part Number: (% style="color:blue" %)**LLDS12-XX**
1223 1223  
1224 -(% style="color:blue" %)**YY**(%%): Battery Option
1225 1225  
1226 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1227 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1188 +(% style="color:blue" %)**XX**(%%): The default frequency band
1228 1228  
1229 -= 7. ​ Packing Info =
1190 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
1191 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1192 +* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1193 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1194 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1195 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1196 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1197 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1230 1230  
1199 += 10. ​ Packing Info =
1231 1231  
1201 +
1232 1232  **Package Includes**:
1233 1233  
1234 -* LDDS75 LoRaWAN Distance Detection Sensor x 1
1204 +* LLDS12 LoRaWAN LiDAR Distance Sensor x 1
1235 1235  
1236 1236  **Dimension and weight**:
1237 1237  
... ... @@ -1240,7 +1240,7 @@
1240 1240  * Package Size / pcs : cm
1241 1241  * Weight / pcs : g
1242 1242  
1243 -= 8.  ​Support =
1213 += 11.  ​Support =
1244 1244  
1245 1245  * 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.
1246 1246  * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].
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