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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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91	91	* 4000mAh or 8500mAh Battery for long term use
92	92
93	93
94		-
95	95	== 1.3  Specification ==
96	96
97	97	=== 1.3.1  Rated environmental conditions ===
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236	236	== 2.3  ​Uplink Payload ==
237	237
238	238	(((
239		-(((
240	240	LDDS75 will uplink payload via LoRaWAN with below payload format:
241		-)))
242	242
243		-(((
244	244	Uplink payload includes in total 4 bytes.
245	245	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
246	246	)))
247		-)))
248	248
249	249	(((
250	250
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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.
292	292	* 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.
293	293
294		-
295		-
296	296	=== 2.3.3  Interrupt Pin ===
297	297
298	298	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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321	321
322	322	=== 2.3.5  Sensor Flag ===
323	323
324		-(((
325	325	0x01: Detect Ultrasonic Sensor
326		-)))
327	327
328		-(((
329	329	0x00: No Ultrasonic Sensor
330		-)))
331	331
332	332
333	333
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340	340
341	341	The payload decoder function for TTN V3 is here:
342	342
343		-(((
344	344	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/]]
345		-)))
346	346
347	347
348	348
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868	868	* Solid ON for 5 seconds once device successful Join the network.
869	869	* Blink once when device transmit a packet.
870	870
871		-
872		-
873	873	== 2.8  ​Firmware Change Log ==
874	874
875	875
876		-(((
877	877	**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/]]
878		-)))
879	879
880		-(((
881		-
882		-)))
883	883
884		-(((
885	885	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
886		-)))
887	887
888	888
889	889
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1027	1027	[[image:image-20220610172924-5.png]]
1028	1028
1029	1029
1030		-(((
1031	1031	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:
1032		-)))
1033	1033
1034	1034
1035	1035	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1053	1053	(((
1054	1054	Format: Command Code (0x01) followed by 3 bytes time value.
1055	1055
1056		-(((
1057	1057	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1058		-)))
1059	1059
1060	1060	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1061	1061	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1062	1062	)))
1063		-)))
1064	1064
1065	1065
	1031	+
	1032	+)))
1066	1066
1067		-
1068		-
1069	1069	== 3.3  Set Interrupt Mode ==
1070	1070
1071	1071	Feature, Set Interrupt mode for GPIO_EXIT.
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1079	1079
1080	1080	Format: Command Code (0x06) followed by 3 bytes.
1081	1081
1082		-(((
1083	1083	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1084		-)))
1085	1085
1086	1086	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1087	1087	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1088	1088
1089		-
1090		-
1091	1091	= 4.  FAQ =
1092	1092
1093	1093	== 4.1  What is the frequency plan for LDDS75? ==
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1147	1147	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1148	1148	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1149	1149
1150		-
1151		-
1152	1152	= 7. ​ Packing Info =
1153	1153
1154	1154
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1163	1163	* Package Size / pcs : cm
1164	1164	* Weight / pcs : g
1165	1165
1166		-
1167		-
1168	1168	= 8.  ​Support =
1169	1169
1170	1170	* 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.