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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
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113	113
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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.
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299	299
300	300	=== 2.3.5  Sensor Flag ===
301	301
	315	+(((
302	302	0x01: Detect Ultrasonic Sensor
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303	303
	319	+(((
304	304	0x00: No Ultrasonic Sensor
	321	+)))
305	305
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307	307
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314	314
315	315	The payload decoder function for TTN V3 is here:
316	316
	334	+(((
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/]]
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318	318
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841	841	* Blink once when device transmit a packet.
842	842
843	843
	863	+
844	844	== 2.8  ​Firmware Change Log ==
845	845
846	846
	867	+(((
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/]]
	869	+)))
848	848
	871	+(((
	872	+
	873	+)))
849	849
	875	+(((
850	850	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
	877	+)))
851	851
852	852
853	853
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991	991	[[image:image-20220610172924-5.png]]
992	992
993	993
	1021	+(((
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:
	1023	+)))
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
	1047	+(((
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.
	1049	+)))
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
	1072	+(((
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.
	1074	+)))
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
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1045	1045
1046	1046
1047	1047
	1081	+
1048	1048	= 4.  FAQ =
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1050	1050	== 4.1  What is the frequency plan for LDDS75? ==
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1106	1106
1107	1107
1108	1108
	1143	+
1109	1109	= 7. ​ Packing Info =
1110	1110
1111	1111
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1122	1122
1123	1123
1124	1124
	1160	+
1125	1125	= 8.  ​Support =
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1127	1127	* 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.