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87	87	* 4000mAh or 8500mAh Battery for long term use
88	88
89	89
90		-
91		-
92		-
93	93	== 1.3  Specification ==
94	94
95	95	=== 1.3.1  Rated environmental conditions ===
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135	135
136	136
137	137
138		-
139		-
140	140	== 1.6  Pin mapping and power on ==
141	141
142	142
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279	279
280	280	=== 2.3.2  Distance ===
281	281
282		-(((
283	283	Get the distance. Flat object range 280mm - 7500mm.
284		-)))
285	285
286		-(((
287	287	For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
288		-)))
289	289
290	290
291	291	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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319	319
320	320	=== 2.3.5  Sensor Flag ===
321	321
322		-(((
323	323	0x01: Detect Ultrasonic Sensor
324		-)))
325	325
326		-(((
327	327	0x00: No Ultrasonic Sensor
328		-)))
329	329
330	330
331	331
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338	338
339	339	The payload decoder function for TTN V3 is here:
340	340
341		-(((
342	342	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/]]
343		-)))
344	344
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346	346
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869	869	== 2.8  ​Firmware Change Log ==
870	870
871	871
872		-(((
873	873	**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/]]
874		-)))
875	875
876		-(((
877		-
878		-)))
879	879
880		-(((
881	881	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
882		-)))
883	883
884	884
885	885
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1023	1023	[[image:image-20220610172924-5.png]]
1024	1024
1025	1025
1026		-(((
1027	1027	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:
1028		-)))
1029	1029
1030	1030
1031	1031	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1049	1049	(((
1050	1050	Format: Command Code (0x01) followed by 3 bytes time value.
1051	1051
1052		-(((
1053	1053	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1054		-)))
1055	1055
1056	1056	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1057	1057	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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1074	1074
1075	1075	Format: Command Code (0x06) followed by 3 bytes.
1076	1076
1077		-(((
1078	1078	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1079		-)))
1080	1080
1081	1081	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1082	1082	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1083	1083
1084		-
1085	1085	= 4.  FAQ =
1086	1086
1087	1087	== 4.1  What is the frequency plan for LDDS75? ==
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1141	1141	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1142	1142	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1143	1143
1144		-
1145	1145	= 7. ​ Packing Info =
1146	1146
1147	1147
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1156	1156	* Package Size / pcs : cm
1157	1157	* Weight / pcs : g
1158	1158
1159		-
1160	1160	= 8.  ​Support =
1161	1161
1162	1162	* 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.