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86	86	* IP66 Waterproof Enclosure
87	87	* 4000mAh or 8500mAh Battery for long term use
88	88
	89	+
	90	+
	91	+
89	89	== 1.3  Specification ==
90	90
91	91	=== 1.3.1  Rated environmental conditions ===
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92	92
93	93	[[image:image-20220610154839-1.png]]
94	94
95		-(((
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)**
97		-)))
	98	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
98	98
	100	+**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)**
99	99
100	100
	103	+
101	101	=== 1.3.2  Effective measurement range Reference beam pattern ===
102	102
103	103	**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
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108	108
109	109
110	110
111		-(((
112	112	**(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.**
113		-)))
114	114
115	115
116	116	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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175	175	[[image:image-20220607170145-1.jpeg]]
176	176
177	177
178		-(((
179	179	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
180		-)))
181	181
182		-(((
183	183	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
184		-)))
185	185
186		-(((
187	187	**Add APP EUI in the application**
188		-)))
189	189
190	190	[[image:image-20220610161353-4.png]]
191	191
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228	228	== 2.3  ​Uplink Payload ==
229	229
230	230	(((
231		-(((
232	232	LDDS75 will uplink payload via LoRaWAN with below payload format:
233		-)))
234	234
235		-(((
236	236	Uplink payload includes in total 4 bytes.
237	237	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
238	238	)))
239		-)))
240	240
241	241	(((
242	242
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271	271
272	272	=== 2.3.2  Distance ===
273	273
274		-(((
275	275	Get the distance. Flat object range 280mm - 7500mm.
276		-)))
277	277
278		-(((
279	279	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.**
280		-)))
281	281
282	282
283	283	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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312	312
313	313	=== 2.3.5  Sensor Flag ===
314	314
315		-(((
316	316	0x01: Detect Ultrasonic Sensor
317		-)))
318	318
319		-(((
320	320	0x00: No Ultrasonic Sensor
321		-)))
322	322
323	323
324	324
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331	331
332	332	The payload decoder function for TTN V3 is here:
333	333
334		-(((
335	335	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/]]
336		-)))
337	337
338	338
339	339
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860	860	* Blink once when device transmit a packet.
861	861
862	862
863		-
864	864	== 2.8  ​Firmware Change Log ==
865	865
866	866
867		-(((
868	868	**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/]]
869		-)))
870	870
871		-(((
872		-
873		-)))
874	874
875		-(((
876	876	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
877		-)))
878	878
879	879
880	880
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1018	1018	[[image:image-20220610172924-5.png]]
1019	1019
1020	1020
1021		-(((
1022	1022	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:
1023		-)))
1024	1024
1025	1025
1026	1026	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1044	1044	(((
1045	1045	Format: Command Code (0x01) followed by 3 bytes time value.
1046	1046
1047		-(((
1048	1048	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1049		-)))
1050	1050
1051	1051	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1052	1052	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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1069	1069
1070	1070	Format: Command Code (0x06) followed by 3 bytes.
1071	1071
1072		-(((
1073	1073	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1074		-)))
1075	1075
1076	1076	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1077	1077	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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1078	1078
1079	1079
1080	1080
1081		-
1082	1082	= 4.  FAQ =
1083	1083
1084	1084	== 4.1  What is the frequency plan for LDDS75? ==
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1140	1140
1141	1141
1142	1142
1143		-
1144	1144	= 7. ​ Packing Info =
1145	1145
1146	1146
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1157	1157
1158	1158
1159	1159
1160		-
1161	1161	= 8.  ​Support =
1162	1162
1163	1163	* 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.