Last modified by Mengting Qiu on 2025/02/26 15:04
<
From version < 150.5 >
edited by Xiaoling
on 2022/06/11 08:36
To version < 148.1 >
edited by Xiaoling
on 2022/06/10 17:48
>
Change comment: Uploaded new attachment "image-20220610174836-8.png", version {1}

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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 ==
... ... @@ -272,9 +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 -== 2.3.6  Decode payload in The Things Network ==
277 -
278 278  While using TTN network, you can add the payload format to decode the payload.
279 279  
280 280  
... ... @@ -996,7 +996,7 @@
996 996  
997 997  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
998 998  
999 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
1000 1000  
1001 1001  
1002 1002  (% style="color:#037691" %)**Downlink Command: 0x06**
... ... @@ -1009,64 +1009,105 @@
1009 1009  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1010 1010  
1011 1011  
1012 -= 4.  FAQ =
1013 1013  
1014 -== 4.1  What is the frequency plan for LDDS75? ==
1015 1015  
1016 -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 =
1017 1017  
1014 +== 6.1  Access AT Commands ==
1018 1018  
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.
1019 1019  
1020 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1018 +[[image:1654593668970-604.png]]
1021 1021  
1022 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1023 -When downloading the images, choose the required image file for download. ​
1020 +**Connection:**
1024 1024  
1022 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1025 1025  
1024 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1026 1026  
1027 -== 4.3  Can I use LDDS75 in condensation environment? ==
1026 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1028 1028  
1029 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1030 1030  
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 +)))
1031 1031  
1034 +(((
1035 +LLDS12 will output system info once power on as below:
1036 +)))
1037 +)))
1032 1032  
1033 -= 5.  Trouble Shooting =
1034 1034  
1035 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1040 + [[image:1654593712276-618.png]]
1036 1036  
1037 -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"]].
1038 1038  
1039 1039  
1040 -== 5.2  AT Command input doesn't work ==
1045 += 4.  FAQ =
1041 1041  
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 +(((
1042 1042  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 +)))
1043 1043  
1062 +
1063 +== 5.2  Significant error between the output distant value of LiDAR and actual distance ==
1064 +
1065 +
1044 1044  (((
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 +(((
1045 1045  
1046 1046  )))
1047 1047  
1078 +(((
1079 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1080 +)))
1048 1048  
1082 +(((
1083 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1084 +)))
1085 +
1086 +
1087 +
1049 1049  = 6.  Order Info =
1050 1050  
1051 1051  
1052 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1091 +Part Number: (% style="color:blue" %)**LDDS75-XX-YY**
1053 1053  
1054 1054  
1055 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1094 +(% style="color:blue" %)**XX**(%%): The default frequency band
1056 1056  
1057 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1058 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1059 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1060 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1061 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1062 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1063 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1064 -* (% 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
1065 1065  
1066 1066  (% style="color:blue" %)**YY**(%%): Battery Option
1067 1067  
1068 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1069 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1107 +* (% style="color:red" %)**4**(%%): 4000mAh battery
1108 +* (% style="color:red" %)**8**(%%): 8500mAh battery
1070 1070  
1071 1071  
1072 1072  = 7. ​ Packing Info =
image-20220610174917-9.png
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