Last modified by Mengting Qiu on 2025/02/26 15:04
<
From version < 150.4 >
edited by Xiaoling
on 2022/06/11 08:35
To version < 147.10 >
edited by Xiaoling
on 2022/06/10 17:47
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3 3  
4 4  **Contents:**
5 5  
6 -{{toc/}}
7 7  
8 8  
9 9  
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11 11  
12 12  
13 13  
14 -
15 15  = 1.  Introduction =
16 16  
17 17  == 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
... ... @@ -272,10 +272,9 @@
272 272  0x00: No Ultrasonic Sensor
273 273  
274 274  
273 +===
274 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
275 275  
276 -
277 -== 2.3.6  Decode payload in The Things Network ==
278 -
279 279  While using TTN network, you can add the payload format to decode the payload.
280 280  
281 281  
... ... @@ -997,7 +997,7 @@
997 997  
998 998  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
999 999  
1000 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
1001 1001  
1002 1002  
1003 1003  (% style="color:#037691" %)**Downlink Command: 0x06**
... ... @@ -1010,64 +1010,105 @@
1010 1010  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1011 1011  
1012 1012  
1013 -= 4.  FAQ =
1014 1014  
1015 -== 4.1  What is the frequency plan for LDDS75? ==
1016 1016  
1017 -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 += 6.  Use AT Command =
1018 1018  
1014 +== 6.1  Access AT Commands ==
1019 1019  
1016 +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.
1020 1020  
1021 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1018 +[[image:1654593668970-604.png]]
1022 1022  
1023 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1024 -When downloading the images, choose the required image file for download. ​
1020 +**Connection:**
1025 1025  
1022 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1026 1026  
1024 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1027 1027  
1028 -== 4.3  Can I use LDDS75 in condensation environment? ==
1026 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1029 1029  
1030 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1031 1031  
1029 +(((
1030 +(((
1031 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1032 +)))
1032 1032  
1034 +(((
1035 +LLDS12 will output system info once power on as below:
1036 +)))
1037 +)))
1033 1033  
1034 -= 5.  Trouble Shooting =
1035 1035  
1036 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1040 + [[image:1654593712276-618.png]]
1037 1037  
1038 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1042 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1039 1039  
1040 1040  
1041 -== 5.2  AT Command input doesn't work ==
1045 += 4.  FAQ =
1042 1042  
1047 +== 4.1  How to change the LoRa Frequency Bands/Region ==
1048 +
1049 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1050 +When downloading the images, choose the required image file for download. ​
1051 +
1052 +
1053 += 5.  Trouble Shooting =
1054 +
1055 +== 5.1  AT Commands input doesn’t work ==
1056 +
1057 +
1058 +(((
1043 1043  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.
1060 +)))
1044 1044  
1062 +
1063 +== 5.2  Significant error between the output distant value of LiDAR and actual distance ==
1064 +
1065 +
1045 1045  (((
1067 +(% 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.)
1068 +)))
1069 +
1070 +(((
1071 +Troubleshooting: Please avoid use of this product under such circumstance in practice.
1072 +)))
1073 +
1074 +(((
1046 1046  
1047 1047  )))
1048 1048  
1078 +(((
1079 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1080 +)))
1049 1049  
1082 +(((
1083 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1084 +)))
1085 +
1086 +
1087 +
1050 1050  = 6.  Order Info =
1051 1051  
1052 1052  
1053 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1091 +Part Number: (% style="color:blue" %)**LDDS75-XX-YY**
1054 1054  
1055 1055  
1056 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1094 +(% style="color:blue" %)**XX**(%%): The default frequency band
1057 1057  
1058 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1059 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1060 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1061 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1062 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1063 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1064 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1065 -* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1096 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
1097 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1098 +* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1099 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1100 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1101 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1102 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1103 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1066 1066  
1067 1067  (% style="color:blue" %)**YY**(%%): Battery Option
1068 1068  
1069 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1070 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1107 +* (% style="color:red" %)**4**(%%): 4000mAh battery
1108 +* (% style="color:red" %)**8**(%%): 8500mAh battery
1071 1071  
1072 1072  
1073 1073  = 7. ​ Packing Info =
image-20220610174836-8.png
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