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87	87	* 4000mAh or 8500mAh Battery for long term use
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90	90	== 1.3  Specification ==
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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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231	231	== 2.3  ​Uplink Payload ==
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233	233	(((
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234	234	LDDS75 will uplink payload via LoRaWAN with below payload format:
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235	235
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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
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270	270
271	271	=== 2.3.2  Distance ===
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273	273	Get the distance. Flat object range 280mm - 7500mm.
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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.**
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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 ===
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309	309	0x01: Detect Ultrasonic Sensor
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310	310
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311	311	0x00: No Ultrasonic Sensor
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322	322	The payload decoder function for TTN V3 is here:
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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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850	850	== 2.8  ​Firmware Change Log ==
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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/]]
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856	856	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
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997	997	[[image:image-20220610172924-5.png]]
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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:
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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.
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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.
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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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1045	1045	Format: Command Code (0x06) followed by 3 bytes.
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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.
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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
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1052	1052	= 4.  FAQ =
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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
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1111	1111	= 7. ​ Packing Info =
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1122	1122	* Package Size / pcs : cm
1123	1123	* Weight / pcs : g
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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.