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Last modified by Xiaoling on 2025/04/27 16:45
From version 153.1
edited by Xiaoling
on 2022/06/14 17:32
Change comment: There is no comment for this version
To version 151.1
edited by Xiaoling
on 2022/06/11 09:25
Change comment: There is no comment for this version

Summary

Details

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1 1  (% style="text-align:center" %)
2 2  [[image:1654846127817-788.png]]
3 3  
4 +**Contents:**
4 4  
5 -
6 -
7 -
8 -**Table of Contents:**
9 -
10 10  {{toc/}}
11 11  
12 12  
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29 29  )))
30 30  
31 31  (((
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 +(((
36 36  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.
37 37  )))
38 38  
39 39  (((
44 +
45 +)))
46 +
47 +(((
40 40  LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
41 41  )))
42 42  
43 43  (((
52 +
53 +)))
54 +
55 +(((
44 44  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.
45 45  )))
46 46  
47 47  (((
60 +
61 +)))
62 +
63 +(((
48 48  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
49 49  )))
50 50  )))
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70 70  * IP66 Waterproof Enclosure
71 71  * 4000mAh or 8500mAh Battery for long term use
72 72  
73 -
74 -
75 75  == 1.3  Specification ==
76 76  
77 77  === 1.3.1  Rated environmental conditions ===
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79 79  [[image:image-20220610154839-1.png]]
80 80  
81 81  (((
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)**
96 +**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)**
85 85  )))
86 86  
87 87  
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117 117  * Sewer
118 118  * Bottom water level monitoring
119 119  
120 -
121 -
122 122  == 1.6  Pin mapping and power on ==
123 123  
124 124  
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155 155  )))
156 156  
157 157  (((
158 -
159 -
160 160  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
161 161  )))
162 162  
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176 176  )))
177 177  
178 178  (((
179 -
180 -
181 181  **Add APP EUI in the application**
182 182  )))
183 183  
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277 277  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
278 278  * 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.
279 279  
280 -
281 -
282 282  === 2.3.3  Interrupt Pin ===
283 283  
284 284  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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855 855  * Blink once when device transmit a packet.
856 856  
857 857  
858 -
859 859  == 2.8  ​Firmware Change Log ==
860 860  
861 861  
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1046 1046  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1047 1047  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1048 1048  )))
1049 -)))
1050 1050  
1051 1051  
1054 +
1055 +)))
1052 1052  
1053 -
1054 -
1055 1055  == 3.3  Set Interrupt Mode ==
1056 1056  
1057 1057  Feature, Set Interrupt mode for GPIO_EXIT.