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86	86	* IP66 Waterproof Enclosure
87	87	* 4000mAh or 8500mAh Battery for long term use
88	88
89		-
90		-
91		-
92	92	== 1.3  Specification ==
93	93
94	94	=== 1.3.1  Rated environmental conditions ===
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95	95
96	96	[[image:image-20220610154839-1.png]]
97	97
98		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
	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	+)))
99	99
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)**
101	101
102	102
103		-
104	104	=== 1.3.2  Effective measurement range Reference beam pattern ===
105	105
106	106	**(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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111	111
112	112
113	113
	111	+(((
114	114	**(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	+)))
115	115
116	116
117	117	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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176	176	[[image:image-20220607170145-1.jpeg]]
177	177
178	178
	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	+)))
180	180
	182	+(((
181	181	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
	184	+)))
182	182
	186	+(((
183	183	**Add APP EUI in the application**
	188	+)))
184	184
185	185	[[image:image-20220610161353-4.png]]
186	186
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223	223	== 2.3  ​Uplink Payload ==
224	224
225	225	(((
	231	+(((
226	226	LDDS75 will uplink payload via LoRaWAN with below payload format:
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227	227
	235	+(((
228	228	Uplink payload includes in total 4 bytes.
229	229	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
230	230	)))
	239	+)))
231	231
232	232	(((
233	233
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262	262
263	263	=== 2.3.2  Distance ===
264	264
	274	+(((
265	265	Get the distance. Flat object range 280mm - 7500mm.
	276	+)))
266	266
	278	+(((
267	267	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	+)))
268	268
269	269
270	270	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
271	271	* 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.
272	272
273		-
274	274	=== 2.3.3  Interrupt Pin ===
275	275
276	276	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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299	299
300	300	=== 2.3.5  Sensor Flag ===
301	301
	314	+(((
302	302	0x01: Detect Ultrasonic Sensor
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303	303
	318	+(((
304	304	0x00: No Ultrasonic Sensor
	320	+)))
305	305
306	306
307	307
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314	314
315	315	The payload decoder function for TTN V3 is here:
316	316
	333	+(((
317	317	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/]]
	335	+)))
318	318
319	319
320	320
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844	844	== 2.8  ​Firmware Change Log ==
845	845
846	846
	865	+(((
847	847	**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/]]
	867	+)))
848	848
	869	+(((
	870	+
	871	+)))
849	849
	873	+(((
850	850	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
	875	+)))
851	851
852	852
853	853
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991	991	[[image:image-20220610172924-5.png]]
992	992
993	993
	1019	+(((
994	994	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:
	1021	+)))
995	995
996	996
997	997	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1015	1015	(((
1016	1016	Format: Command Code (0x01) followed by 3 bytes time value.
1017	1017
	1045	+(((
1018	1018	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1047	+)))
1019	1019
1020	1020	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1021	1021	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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1038	1038
1039	1039	Format: Command Code (0x06) followed by 3 bytes.
1040	1040
	1070	+(((
1041	1041	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	1072	+)))
1042	1042
1043	1043	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1044	1044	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger