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87	87	* 4000mAh or 8500mAh Battery for long term use
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90	90	== 1.3  Specification ==
91	91
92	92	=== 1.3.1  Rated environmental conditions ===
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135	135	== 1.6  Pin mapping and power on ==
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178	178	[[image:image-20220607170145-1.jpeg]]
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	186	+(((
181	181	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
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183	183	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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185	185	**Add APP EUI in the application**
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186	186
187	187	[[image:image-20220610161353-4.png]]
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225	225	== 2.3  ​Uplink Payload ==
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227	227	(((
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228	228	LDDS75 will uplink payload via LoRaWAN with below payload format:
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229	229
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230	230	Uplink payload includes in total 4 bytes.
231	231	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
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264	264
265	265	=== 2.3.2  Distance ===
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267	267	Get the distance. Flat object range 280mm - 7500mm.
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269	269	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.**
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272	272	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
273	273	* 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.
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275	275	=== 2.3.3  Interrupt Pin ===
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277	277	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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300	300
301	301	=== 2.3.5  Sensor Flag ===
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303	303	0x01: Detect Ultrasonic Sensor
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305	305	0x00: No Ultrasonic Sensor
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316	316	The payload decoder function for TTN V3 is here:
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318	318	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	* Solid ON for 5 seconds once device successful Join the network.
842	842	* Blink once when device transmit a packet.
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844	844	== 2.8  ​Firmware Change Log ==
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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/]]
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850	850	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
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991	991	[[image:image-20220610172924-5.png]]
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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:
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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.
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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.
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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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1028	1028	== 3.3  Set Interrupt Mode ==
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1030	1030	Feature, Set Interrupt mode for GPIO_EXIT.
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1038	1038
1039	1039	Format: Command Code (0x06) followed by 3 bytes.
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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.
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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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1046	1046	= 4.  FAQ =
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1048	1048	== 4.1  What is the frequency plan for LDDS75? ==
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1102	1102	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1103	1103	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
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1105	1105	= 7. ​ Packing Info =
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1116	1116	* Package Size / pcs : cm
1117	1117	* Weight / pcs : g
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1119	1119	= 8.  ​Support =
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1121	1121	* 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.