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86	86	* IP66 Waterproof Enclosure
87	87	* 4000mAh or 8500mAh Battery for long term use
88	88
89		-
90	90	== 1.3  Specification ==
91	91
92	92	=== 1.3.1  Rated environmental conditions ===
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130	130	* Sewer
131	131	* Bottom water level monitoring
132	132
133		-
134		-
135	135	== 1.6  Pin mapping and power on ==
136	136
137	137
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231	231	== 2.3  ​Uplink Payload ==
232	232
233	233	(((
	231	+(((
234	234	LDDS75 will uplink payload via LoRaWAN with below payload format:
	233	+)))
235	235
	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	+)))
239	239
240	240	(((
241	241
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270	270
271	271	=== 2.3.2  Distance ===
272	272
	274	+(((
273	273	Get the distance. Flat object range 280mm - 7500mm.
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274	274
	278	+(((
275	275	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	+)))
276	276
277	277
278	278	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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306	306
307	307	=== 2.3.5  Sensor Flag ===
308	308
	314	+(((
309	309	0x01: Detect Ultrasonic Sensor
	316	+)))
310	310
	318	+(((
311	311	0x00: No Ultrasonic Sensor
	320	+)))
312	312
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321	321
322	322	The payload decoder function for TTN V3 is here:
323	323
	333	+(((
324	324	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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325	325
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847	847	* Solid ON for 5 seconds once device successful Join the network.
848	848	* Blink once when device transmit a packet.
849	849
	861	+
850	850	== 2.8  ​Firmware Change Log ==
851	851
852	852
	865	+(((
853	853	**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	+)))
854	854
	869	+(((
	870	+
	871	+)))
855	855
	873	+(((
856	856	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
	875	+)))
857	857
858	858
859	859
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997	997	[[image:image-20220610172924-5.png]]
998	998
999	999
	1019	+(((
1000	1000	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	+)))
1001	1001
1002	1002
1003	1003	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1021	1021	(((
1022	1022	Format: Command Code (0x01) followed by 3 bytes time value.
1023	1023
	1045	+(((
1024	1024	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1047	+)))
1025	1025
1026	1026	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1027	1027	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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1044	1044
1045	1045	Format: Command Code (0x06) followed by 3 bytes.
1046	1046
	1070	+(((
1047	1047	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	+)))
1048	1048
1049	1049	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1050	1050	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1051	1051
	1077	+
	1078	+
1052	1052	= 4.  FAQ =
1053	1053
1054	1054	== 4.1  What is the frequency plan for LDDS75? ==
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1108	1108	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1109	1109	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1110	1110
	1138	+
	1139	+
1111	1111	= 7. ​ Packing Info =
1112	1112
1113	1113
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1122	1122	* Package Size / pcs : cm
1123	1123	* Weight / pcs : g
1124	1124
	1154	+
	1155	+
1125	1125	= 8.  ​Support =
1126	1126
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.