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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		-)))
	95	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
98	98
	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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100	100
	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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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.
284	284	* 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.
285	285
	270	+
286	286	=== 2.3.3  Interrupt Pin ===
287	287
288	288	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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311	311
312	312	=== 2.3.5  Sensor Flag ===
313	313
314		-(((
315	315	0x01: Detect Ultrasonic Sensor
316		-)))
317	317
318		-(((
319	319	0x00: No Ultrasonic Sensor
320		-)))
321	321
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323	323
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330	330
331	331	The payload decoder function for TTN V3 is here:
332	332
333		-(((
334	334	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		-)))
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862	862	== 2.8  ​Firmware Change Log ==
863	863
864	864
865		-(((
866	866	**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		-)))
868	868
869		-(((
870		-
871		-)))
872	872
873		-(((
874	874	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
875		-)))
876	876
877	877
878	878
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1016	1016	[[image:image-20220610172924-5.png]]
1017	1017
1018	1018
1019		-(((
1020	1020	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		-)))
1022	1022
1023	1023
1024	1024	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1042	1042	(((
1043	1043	Format: Command Code (0x01) followed by 3 bytes time value.
1044	1044
1045		-(((
1046	1046	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1047		-)))
1048	1048
1049	1049	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1050	1050	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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1067	1067
1068	1068	Format: Command Code (0x06) followed by 3 bytes.
1069	1069
1070		-(((
1071	1071	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		-)))
1073	1073
1074	1074	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1075	1075	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger