Last modified by Mengting Qiu on 2025/02/26 15:04
<
From version < 150.10 >
edited by Xiaoling
on 2022/06/11 08:40
To version < 148.1 >
edited by Xiaoling
on 2022/06/10 17:48
>
Change comment: Uploaded new attachment "image-20220610174836-8.png", version {1}

Summary

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Content
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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 ==
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35 35  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.
36 36  
37 37  
38 -(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
36 +(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors
39 39  )))
40 40  )))
41 41  
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59 59  * IP66 Waterproof Enclosure
60 60  * 4000mAh or 8500mAh Battery for long term use
61 61  
62 -
63 -
64 64  == 1.3  Specification ==
65 65  
66 66  === 1.3.1  Rated environmental conditions ===
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82 82  [[image:1654852253176-749.png]]
83 83  
84 84  
85 -
86 86  **(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.**
87 87  
88 88  
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275 275  0x00: No Ultrasonic Sensor
276 276  
277 277  
273 +===
274 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
278 278  
279 -=== 2.3.6  Decode payload in The Things Network ===
280 -
281 281  While using TTN network, you can add the payload format to decode the payload.
282 282  
283 283  
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999 999  
1000 1000  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1001 1001  
1002 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
1003 1003  
1004 1004  
1005 1005  (% style="color:#037691" %)**Downlink Command: 0x06**
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1011 1011  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1012 1012  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1013 1013  
1014 -= 4.  FAQ =
1015 1015  
1016 -== 4.1  What is the frequency plan for LDDS75? ==
1017 1017  
1018 -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"]]
1019 1019  
1012 += 6.  Use AT Command =
1020 1020  
1014 +== 6.1  Access AT Commands ==
1021 1021  
1022 -== 4.2  How to change the LoRa Frequency Bands/Region ==
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.
1023 1023  
1024 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1025 -When downloading the images, choose the required image file for download. ​
1018 +[[image:1654593668970-604.png]]
1026 1026  
1020 +**Connection:**
1027 1027  
1022 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1028 1028  
1029 -== 4.3  Can I use LDDS75 in condensation environment? ==
1024 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1030 1030  
1031 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1026 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1032 1032  
1033 1033  
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 +)))
1034 1034  
1035 -= 5.  Trouble Shooting =
1034 +(((
1035 +LLDS12 will output system info once power on as below:
1036 +)))
1037 +)))
1036 1036  
1037 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1038 1038  
1039 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1040 + [[image:1654593712276-618.png]]
1040 1040  
1042 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1041 1041  
1042 -== 5.2  AT Command input doesn't work ==
1043 1043  
1045 += 4.  FAQ =
1046 +
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 +(((
1044 1044  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 +)))
1045 1045  
1062 +
1063 +== 5.2  Significant error between the output distant value of LiDAR and actual distance ==
1064 +
1065 +
1046 1046  (((
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 +(((
1047 1047  
1048 1048  )))
1049 1049  
1078 +(((
1079 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1080 +)))
1050 1050  
1082 +(((
1083 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1084 +)))
1085 +
1086 +
1087 +
1051 1051  = 6.  Order Info =
1052 1052  
1053 1053  
1054 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1091 +Part Number: (% style="color:blue" %)**LDDS75-XX-YY**
1055 1055  
1056 1056  
1057 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1094 +(% style="color:blue" %)**XX**(%%): The default frequency band
1058 1058  
1059 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1060 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1061 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1062 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1063 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1064 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1065 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1066 -* (% 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
1067 1067  
1068 1068  (% style="color:blue" %)**YY**(%%): Battery Option
1069 1069  
1070 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1071 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1107 +* (% style="color:red" %)**4**(%%): 4000mAh battery
1108 +* (% style="color:red" %)**8**(%%): 8500mAh battery
1072 1072  
1110 +
1073 1073  = 7. ​ Packing Info =
1074 1074  
1075 1075  
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1084 1084  * Package Size / pcs : cm
1085 1085  * Weight / pcs : g
1086 1086  
1125 +
1087 1087  = 8.  ​Support =
1088 1088  
1089 1089  * 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-20220610174917-9.png
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