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Last modified by Xiaoling on 2025/04/27 16:45
From version 150.48
edited by Xiaoling
on 2022/06/11 09:18
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To version 154.1
edited by Xiaoling
on 2022/06/15 08:56
Change comment: Uploaded new attachment "1655254599445-662.png", version {1}

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Title
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1 -LDDS75 - LoRaWAN Distance Detection Sensor User Manual
1 +LDDS20 - LoRaWAN Liquid Level Sensor User Manual
Content
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1 1  (% style="text-align:center" %)
2 2  [[image:1654846127817-788.png]]
3 3  
4 -**Contents:**
5 5  
5 +
6 +
7 +
8 +**Table of Contents:**
9 +
6 6  {{toc/}}
7 7  
8 8  
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25 25  )))
26 26  
27 27  (((
28 -
29 -)))
30 -
31 -(((
32 32  It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
33 33  )))
34 34  
35 35  (((
36 -
37 -)))
38 -
39 -(((
40 40  The LoRa wireless technology used in LDDS75 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
41 41  )))
42 42  
43 43  (((
44 -
45 -)))
46 -
47 -(((
48 48  LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
49 49  )))
50 50  
51 51  (((
52 -
53 -)))
54 -
55 -(((
56 56  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.
57 57  )))
58 58  
59 59  (((
60 -
61 -)))
62 -
63 -(((
64 64  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
65 65  )))
66 66  )))
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87 87  * 4000mAh or 8500mAh Battery for long term use
88 88  
89 89  
74 +
90 90  == 1.3  Specification ==
91 91  
92 92  === 1.3.1  Rated environmental conditions ===
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94 94  [[image:image-20220610154839-1.png]]
95 95  
96 96  (((
97 -**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
82 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  **
83 +
84 +**~ b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
98 98  )))
99 99  
100 100  
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168 168  )))
169 169  
170 170  (((
158 +
159 +
171 171  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
172 172  )))
173 173  
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187 187  )))
188 188  
189 189  (((
179 +
180 +
190 190  **Add APP EUI in the application**
191 191  )))
192 192  
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286 286  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
287 287  * If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
288 288  
280 +
281 +
289 289  === 2.3.3  Interrupt Pin ===
290 290  
291 291  This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
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314 314  
315 315  === 2.3.5  Sensor Flag ===
316 316  
310 +(((
317 317  0x01: Detect Ultrasonic Sensor
312 +)))
318 318  
314 +(((
319 319  0x00: No Ultrasonic Sensor
316 +)))
320 320  
321 321  
322 322  
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329 329  
330 330  The payload decoder function for TTN V3 is here:
331 331  
329 +(((
332 332  LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
331 +)))
333 333  
334 334  
335 335  
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855 855  * Solid ON for 5 seconds once device successful Join the network.
856 856  * Blink once when device transmit a packet.
857 857  
857 +
858 +
858 858  == 2.8  ​Firmware Change Log ==
859 859  
860 860  
862 +(((
861 861  **Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
864 +)))
862 862  
866 +(((
867 +
868 +)))
863 863  
870 +(((
864 864  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
872 +)))
865 865  
866 866  
867 867  
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1005 1005  [[image:image-20220610172924-5.png]]
1006 1006  
1007 1007  
1016 +(((
1008 1008  In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
1018 +)))
1009 1009  
1010 1010  
1011 1011   [[image:image-20220610172924-6.png||height="601" width="860"]]
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1029 1029  (((
1030 1030  Format: Command Code (0x01) followed by 3 bytes time value.
1031 1031  
1042 +(((
1032 1032  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1044 +)))
1033 1033  
1034 1034  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1035 1035  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1036 1036  )))
1049 +)))
1037 1037  
1038 1038  
1039 -
1040 -)))
1041 1041  
1053 +
1054 +
1042 1042  == 3.3  Set Interrupt Mode ==
1043 1043  
1044 1044  Feature, Set Interrupt mode for GPIO_EXIT.
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1052 1052  
1053 1053  Format: Command Code (0x06) followed by 3 bytes.
1054 1054  
1068 +(((
1055 1055  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1070 +)))
1056 1056  
1057 1057  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1058 1058  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1059 1059  
1075 +
1076 +
1060 1060  = 4.  FAQ =
1061 1061  
1062 1062  == 4.1  What is the frequency plan for LDDS75? ==
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1116 1116  * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1117 1117  * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1118 1118  
1136 +
1137 +
1119 1119  = 7. ​ Packing Info =
1120 1120  
1121 1121  
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1130 1130  * Package Size / pcs : cm
1131 1131  * Weight / pcs : g
1132 1132  
1152 +
1153 +
1133 1133  = 8.  ​Support =
1134 1134  
1135 1135  * 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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1 +XWiki.Xiaoling
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