Skip to Content
Last modified by Xiaoling on 2025/04/27 16:45
From version 170.1
edited by Xiaoling
on 2022/06/15 09:37
Change comment: Uploaded new attachment "1655257026882-201.png", version {1}
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
... ... @@ -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
... ... @@ -98,109 +98,48 @@
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  
104 -== 1.3  Suitable Container & Liquid ==
62 +=== 1.3.1  Rated environmental conditions ===
105 105  
106 -* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
107 -* Container shape is regular, and surface is smooth.
108 -* Container Thickness:
109 -** Pure metal material.  2~~8mm, best is 3~~5mm
110 -** Pure non metal material: <10 mm
111 -* Pure liquid without irregular deposition.
64 +[[image:image-20220610154839-1.png]]
112 112  
66 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
113 113  
114 -== 1.4  Mechanical ==
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)**
115 115  
116 -[[image:image-20220615090910-1.png]]
117 117  
118 118  
119 -[[image:image-20220615090910-2.png]]
72 +=== 1.3.2  Effective measurement range Reference beam pattern ===
120 120  
74 +**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
121 121  
122 122  
123 -== 1.5  Install LDDS20 ==
124 124  
78 +[[image:1654852253176-749.png]]
125 125  
126 -(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
127 127  
128 -LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
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.**
129 129  
130 -[[image:image-20220615091045-3.png]]
131 131  
84 +[[image:1654852175653-550.png]](% style="display:none" %) ** **
132 132  
133 133  
134 -(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
135 135  
136 -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.
88 +== 1.5 ​ Applications ==
137 137  
138 -[[image:image-20220615092010-11.png]]
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
139 139  
140 -
141 -No polish needed if the container is shine metal surface without paint or non-metal container.
142 -
143 -[[image:image-20220615092044-12.png]]
144 -
145 -
146 -(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
147 -
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.
149 -
150 -
151 -It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
152 -
153 -[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
154 -
155 -
156 -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.
157 -
158 -
159 -(% style="color:red" %)**LED Status:**
160 -
161 -* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
162 -
163 -* (% 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.
164 -* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
165 -
166 -LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
167 -
168 -
169 -(% style="color:red" %)**Note 2:**
170 -
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 -
173 -
174 -(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 -
176 -
177 -Prepare Eproxy AB glue.
178 -
179 -Put Eproxy AB glue in the sensor and press it hard on the container installation point.
180 -
181 -Reset LDDS20 and see if the BLUE LED is slowly blinking.
182 -
183 -[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
184 -
185 -
186 -(% style="color:red" %)**Note 1:**
187 -
188 -Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
189 -
190 -
191 -(% style="color:red" %)**Note 2:**
192 -
193 -(% 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.
194 -
195 -
196 -
197 -== 1.6 ​ Applications ==
198 -
199 -* Smart liquid control solution.
200 -* Smart liquefied gas solution.
201 -
202 -
203 -
204 204  == 1.6  Pin mapping and power on ==
205 205  
206 206  
... ... @@ -237,8 +237,6 @@
237 237  )))
238 238  
239 239  (((
240 -
241 -
242 242  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
243 243  )))
244 244  
... ... @@ -249,19 +249,11 @@
249 249  [[image:image-20220607170145-1.jpeg]]
250 250  
251 251  
252 -(((
253 253  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
254 -)))
255 255  
256 -(((
257 257  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
258 -)))
259 259  
260 -(((
261 -
262 -
263 263  **Add APP EUI in the application**
264 -)))
265 265  
266 266  [[image:image-20220610161353-4.png]]
267 267  
... ... @@ -304,15 +304,11 @@
304 304  == 2.3  ​Uplink Payload ==
305 305  
306 306  (((
307 -(((
308 308  LDDS75 will uplink payload via LoRaWAN with below payload format: 
309 -)))
310 310  
311 -(((
312 312  Uplink payload includes in total 4 bytes.
313 313  Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
314 314  )))
315 -)))
316 316  
317 317  (((
318 318  
... ... @@ -323,12 +323,12 @@
323 323  **Size (bytes)**
324 324  )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
325 325  |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
326 -[[Distance>>||anchor="H2.3.2A0Distance"]]
208 +[[Distance>>||anchor="H2.3.3A0Distance"]]
327 327  
328 328  (unit: mm)
329 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
330 -[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
331 -)))|[[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]]
332 332  
333 333  [[image:1654850511545-399.png]]
334 334  
... ... @@ -347,13 +347,9 @@
347 347  
348 348  === 2.3.2  Distance ===
349 349  
350 -(((
351 351  Get the distance. Flat object range 280mm - 7500mm.
352 -)))
353 353  
354 -(((
355 355  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.**
356 -)))
357 357  
358 358  
359 359  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
... ... @@ -361,7 +361,7 @@
361 361  
362 362  === 2.3.3  Interrupt Pin ===
363 363  
364 -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.
365 365  
366 366  **Example:**
367 367  
... ... @@ -387,18 +387,14 @@
387 387  
388 388  === 2.3.5  Sensor Flag ===
389 389  
390 -(((
391 391  0x01: Detect Ultrasonic Sensor
392 -)))
393 393  
394 -(((
395 395  0x00: No Ultrasonic Sensor
396 -)))
397 397  
398 398  
273 +===
274 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
399 399  
400 -=== 2.3.6  Decode payload in The Things Network ===
401 -
402 402  While using TTN network, you can add the payload format to decode the payload.
403 403  
404 404  
... ... @@ -406,9 +406,7 @@
406 406  
407 407  The payload decoder function for TTN V3 is here:
408 408  
409 -(((
410 410  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/]]
411 -)))
412 412  
413 413  
414 414  
... ... @@ -937,17 +937,10 @@
937 937  == 2.8  ​Firmware Change Log ==
938 938  
939 939  
940 -(((
941 941  **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/]]
942 -)))
943 943  
944 -(((
945 -
946 -)))
947 947  
948 -(((
949 949  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
950 -)))
951 951  
952 952  
953 953  
... ... @@ -956,11 +956,9 @@
956 956  
957 957  [[image:image-20220610172003-1.png]]
958 958  
959 -
960 960  [[image:image-20220610172003-2.png]]
961 961  
962 962  
963 -
964 964  == 2.10  Battery Analysis ==
965 965  
966 966  === 2.10.1  Battery Type ===
... ... @@ -971,7 +971,7 @@
971 971  The battery related documents as below:
972 972  
973 973  * (((
974 -[[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]],
975 975  )))
976 976  * (((
977 977  [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
... ... @@ -987,7 +987,7 @@
987 987  === 2.10.2  Replace the battery ===
988 988  
989 989  (((
990 -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.
991 991  )))
992 992  
993 993  (((
... ... @@ -995,12 +995,12 @@
995 995  )))
996 996  
997 997  (((
998 -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)
999 999  )))
1000 1000  
1001 1001  
1002 1002  
1003 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
866 += 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
1004 1004  
1005 1005  (((
1006 1006  (((
... ... @@ -1010,7 +1010,7 @@
1010 1010  
1011 1011  * (((
1012 1012  (((
1013 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
876 +AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
1014 1014  )))
1015 1015  )))
1016 1016  * (((
... ... @@ -1091,9 +1091,7 @@
1091 1091  [[image:image-20220610172924-5.png]]
1092 1092  
1093 1093  
1094 -(((
1095 1095  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:
1096 -)))
1097 1097  
1098 1098  
1099 1099   [[image:image-20220610172924-6.png||height="601" width="860"]]
... ... @@ -1117,19 +1117,16 @@
1117 1117  (((
1118 1118  Format: Command Code (0x01) followed by 3 bytes time value.
1119 1119  
1120 -(((
1121 1121  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1122 -)))
1123 1123  
1124 1124  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1125 1125  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1126 1126  )))
1127 -)))
1128 1128  
1129 1129  
988 +
989 +)))
1130 1130  
1131 -
1132 -
1133 1133  == 3.3  Set Interrupt Mode ==
1134 1134  
1135 1135  Feature, Set Interrupt mode for GPIO_EXIT.
... ... @@ -1136,7 +1136,7 @@
1136 1136  
1137 1137  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1138 1138  
1139 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
1140 1140  
1141 1141  
1142 1142  (% style="color:#037691" %)**Downlink Command: 0x06**
... ... @@ -1143,72 +1143,115 @@
1143 1143  
1144 1144  Format: Command Code (0x06) followed by 3 bytes.
1145 1145  
1146 -(((
1147 1147  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1148 -)))
1149 1149  
1150 1150  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1151 1151  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1152 1152  
1153 -= 4.  FAQ =
1154 1154  
1155 -== 4.1  What is the frequency plan for LDDS75? ==
1156 1156  
1157 -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"]]
1158 1158  
1159 1159  
1013 += 6.  Use AT Command =
1160 1160  
1161 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1015 +== 6.1  Access AT Commands ==
1162 1162  
1163 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1164 -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.
1165 1165  
1019 +[[image:1654593668970-604.png]]
1166 1166  
1021 +**Connection:**
1167 1167  
1168 -== 4.3  Can I use LDDS75 in condensation environment? ==
1023 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1169 1169  
1170 -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**
1171 1171  
1027 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1172 1172  
1173 1173  
1174 -= 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 +)))
1175 1175  
1176 -== 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 +)))
1177 1177  
1178 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1179 1179  
1041 + [[image:1654593712276-618.png]]
1180 1180  
1181 -== 5.2  AT Command input doesn't work ==
1043 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1182 1182  
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 +(((
1183 1183  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 +)))
1184 1184  
1063 +
1064 +== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
1065 +
1066 +
1185 1185  (((
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 +(((
1186 1186  
1187 1187  )))
1188 1188  
1079 +(((
1080 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1081 +)))
1189 1189  
1083 +(((
1084 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1085 +)))
1086 +
1087 +
1088 +
1190 1190  = 6.  Order Info =
1191 1191  
1192 1192  
1193 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1092 +Part Number: (% style="color:blue" %)**LLDS12-XX**
1194 1194  
1195 1195  
1196 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1095 +(% style="color:blue" %)**XX**(%%): The default frequency band
1197 1197  
1198 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1199 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1200 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1201 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1202 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1203 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1204 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1205 -* (% 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
1206 1206  
1207 -(% style="color:blue" %)**YY**(%%): Battery Option
1106 +**YY**: Battery Option
1208 1208  
1209 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1210 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1108 +* **4**: 4000mAh battery
1109 +* **8**: 8500mAh battery
1211 1211  
1111 +
1112 +
1212 1212  = 7. ​ Packing Info =
1213 1213  
1214 1214  
... ... @@ -1223,6 +1223,8 @@
1223 1223  * Package Size / pcs : cm
1224 1224  * Weight / pcs : g
1225 1225  
1127 +
1128 +
1226 1226  = 8.  ​Support =
1227 1227  
1228 1228  * 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.
1655254599445-662.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -117.0 KB
Content
1655255122126-327.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -101.7 KB
Content
1655256160324-178.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -177.0 KB
Content
1655257026882-201.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -492.6 KB
Content
image-20220610174836-8.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -34.3 KB
Content
image-20220610174917-9.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -34.3 KB
Content
image-20220615090910-1.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -8.3 KB
Content
image-20220615090910-2.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -5.7 KB
Content
image-20220615091045-3.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -209.8 KB
Content
image-20220615091045-4.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -76.9 KB
Content
image-20220615091045-5.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -111.5 KB
Content
image-20220615091045-6.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -196.0 KB
Content
image-20220615091045-7.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -371.1 KB
Content
image-20220615091045-8.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -206.3 KB
Content
image-20220615091045-9.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -115.0 KB
Content
image-20220615091929-10.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -37.7 KB
Content
image-20220615092010-11.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -37.3 KB
Content
image-20220615092044-12.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -63.5 KB
Content
image-20220615092327-13.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -66.3 KB
Content