Last modified by Mengting Qiu on 2025/02/26 15:04
<
From version < 150.11 >
edited by Xiaoling
on 2022/06/11 08:40
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 ==
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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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102 102  * Sewer
103 103  * Bottom water level monitoring
104 104  
105 -
106 -
107 -
108 108  == 1.6  Pin mapping and power on ==
109 109  
110 110  
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278 278  0x00: No Ultrasonic Sensor
279 279  
280 280  
273 +===
274 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
281 281  
282 -=== 2.3.6  Decode payload in The Things Network ===
283 -
284 284  While using TTN network, you can add the payload format to decode the payload.
285 285  
286 286  
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1002 1002  
1003 1003  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1004 1004  
1005 -[[image:image-20220610174917-9.png]]
997 +[[image:image-20220610105907-1.png]]
1006 1006  
1007 1007  
1008 1008  (% style="color:#037691" %)**Downlink Command: 0x06**
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1014 1014  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1015 1015  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1016 1016  
1017 -= 4.  FAQ =
1018 1018  
1019 -== 4.1  What is the frequency plan for LDDS75? ==
1020 1020  
1021 -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"]]
1022 1022  
1012 += 6.  Use AT Command =
1023 1023  
1014 +== 6.1  Access AT Commands ==
1024 1024  
1025 -== 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.
1026 1026  
1027 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1028 -When downloading the images, choose the required image file for download. ​
1018 +[[image:1654593668970-604.png]]
1029 1029  
1020 +**Connection:**
1030 1030  
1022 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1031 1031  
1032 -== 4.3  Can I use LDDS75 in condensation environment? ==
1024 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1033 1033  
1034 -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**
1035 1035  
1036 1036  
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 +)))
1037 1037  
1038 -= 5.  Trouble Shooting =
1034 +(((
1035 +LLDS12 will output system info once power on as below:
1036 +)))
1037 +)))
1039 1039  
1040 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1041 1041  
1042 -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]]
1043 1043  
1042 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1044 1044  
1045 -== 5.2  AT Command input doesn't work ==
1046 1046  
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 +(((
1047 1047  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 +)))
1048 1048  
1062 +
1063 +== 5.2  Significant error between the output distant value of LiDAR and actual distance ==
1064 +
1065 +
1049 1049  (((
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 +(((
1050 1050  
1051 1051  )))
1052 1052  
1078 +(((
1079 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1080 +)))
1053 1053  
1082 +(((
1083 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1084 +)))
1085 +
1086 +
1087 +
1054 1054  = 6.  Order Info =
1055 1055  
1056 1056  
1057 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1091 +Part Number: (% style="color:blue" %)**LDDS75-XX-YY**
1058 1058  
1059 1059  
1060 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1094 +(% style="color:blue" %)**XX**(%%): The default frequency band
1061 1061  
1062 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1063 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1064 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1065 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1066 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1067 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1068 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1069 -* (% 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
1070 1070  
1071 1071  (% style="color:blue" %)**YY**(%%): Battery Option
1072 1072  
1073 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1074 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1107 +* (% style="color:red" %)**4**(%%): 4000mAh battery
1108 +* (% style="color:red" %)**8**(%%): 8500mAh battery
1075 1075  
1110 +
1076 1076  = 7. ​ Packing Info =
1077 1077  
1078 1078  
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1087 1087  * Package Size / pcs : cm
1088 1088  * Weight / pcs : g
1089 1089  
1125 +
1090 1090  = 8.  ​Support =
1091 1091  
1092 1092  * 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.
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