Last modified by Mengting Qiu on 2025/02/26 15:04
<
From version < 149.14 >
edited by Xiaoling
on 2022/06/10 18:15
To version < 147.8 >
edited by Xiaoling
on 2022/06/10 17:44
>
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... ... @@ -994,7 +994,7 @@
994 994  
995 995  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
996 996  
997 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
998 998  
999 999  
1000 1000  (% style="color:#037691" %)**Downlink Command: 0x06**
... ... @@ -1009,68 +1009,107 @@
1009 1009  
1010 1010  
1011 1011  
1012 -= 4.  FAQ =
1013 1013  
1014 -== 4.1  What is the frequency plan for LDDS75? ==
1013 += 6.  Use AT Command =
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"]]
1015 +== 6.1  Access AT Commands ==
1017 1017  
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.
1018 1018  
1019 +[[image:1654593668970-604.png]]
1019 1019  
1020 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1021 +**Connection:**
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. ​
1023 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1024 1024  
1025 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1025 1025  
1027 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1026 1026  
1027 -== 4.3  Can I use LDDS75 in condensation environment? ==
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 +(((
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 +)))
1030 1030  
1035 +(((
1036 +LLDS12 will output system info once power on as below:
1037 +)))
1038 +)))
1031 1031  
1032 1032  
1033 -= 5.  Trouble Shooting =
1041 + [[image:1654593712276-618.png]]
1034 1034  
1035 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1043 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1036 1036  
1037 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1038 1038  
1046 += 7.  FAQ =
1039 1039  
1040 -== 5.2  AT Command input doesn't work ==
1048 +== 7.1  How to change the LoRa Frequency Bands/Region ==
1041 1041  
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 +(((
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.
1061 +)))
1043 1043  
1063 +
1064 +== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
1065 +
1066 +
1044 1044  (((
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 +(((
1045 1045  
1046 1046  )))
1047 1047  
1079 +(((
1080 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1081 +)))
1048 1048  
1049 -= 6.  Order Info =
1083 +(((
1084 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1085 +)))
1050 1050  
1051 1051  
1052 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1053 1053  
1089 += 6.  Order Info =
1054 1054  
1055 -(% 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
1092 +Part Number: (% style="color:blue" %)**LLDS12-XX**
1065 1065  
1066 -(% style="color:blue" %)**YY**(%%): Battery Option
1067 1067  
1068 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1069 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1095 +(% style="color:blue" %)**XX**(%%): The default frequency band
1070 1070  
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
1071 1071  
1106 +**YY**: Battery Option
1072 1072  
1108 +* **4**: 4000mAh battery
1109 +* **8**: 8500mAh battery
1073 1073  
1111 +
1112 +
1074 1074  = 7. ​ Packing Info =
1075 1075  
1076 1076  
... ... @@ -1087,7 +1087,6 @@
1087 1087  
1088 1088  
1089 1089  
1090 -
1091 1091  = 8.  ​Support =
1092 1092  
1093 1093  * 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.
image-20220610174836-8.png
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image-20220610174917-9.png
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