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93	93	[[image:image-20220610154839-1.png]]
94	94
95		-**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	+)))
96	96
97		-**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)**
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99	99
100		-
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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	111	+(((
111	111	**(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.**
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112	112
113	113
114	114	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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173	173	[[image:image-20220607170145-1.jpeg]]
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	178	+(((
176	176	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
	180	+)))
177	177
	182	+(((
178	178	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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179	179
	186	+(((
180	180	**Add APP EUI in the application**
	188	+)))
181	181
182	182	[[image:image-20220610161353-4.png]]
183	183
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220	220	== 2.3  ​Uplink Payload ==
221	221
222	222	(((
	231	+(((
223	223	LDDS75 will uplink payload via LoRaWAN with below payload format:
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224	224
	235	+(((
225	225	Uplink payload includes in total 4 bytes.
226	226	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
227	227	)))
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228	228
229	229	(((
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259	259
260	260	=== 2.3.2  Distance ===
261	261
	274	+(((
262	262	Get the distance. Flat object range 280mm - 7500mm.
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263	263
	278	+(((
264	264	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	+)))
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266	266
267	267	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
268	268	* 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.
269	269
270		-
271	271	=== 2.3.3  Interrupt Pin ===
272	272
273	273	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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296	296
297	297	=== 2.3.5  Sensor Flag ===
298	298
	314	+(((
299	299	0x01: Detect Ultrasonic Sensor
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300	300
	318	+(((
301	301	0x00: No Ultrasonic Sensor
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311	311
312	312	The payload decoder function for TTN V3 is here:
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	333	+(((
314	314	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/]]
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841	841	== 2.8  ​Firmware Change Log ==
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	865	+(((
844	844	**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	+)))
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	869	+(((
	870	+
	871	+)))
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	873	+(((
847	847	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
	875	+)))
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988	988	[[image:image-20220610172924-5.png]]
989	989
990	990
	1019	+(((
991	991	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	+)))
992	992
993	993
994	994	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1012	1012	(((
1013	1013	Format: Command Code (0x01) followed by 3 bytes time value.
1014	1014
	1045	+(((
1015	1015	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1047	+)))
1016	1016
1017	1017	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1018	1018	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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1035	1035
1036	1036	Format: Command Code (0x06) followed by 3 bytes.
1037	1037
	1070	+(((
1038	1038	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	+)))
1039	1039
1040	1040	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1041	1041	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger