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3	3
4	4	**Contents:**
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	6	+{{toc/}}
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231	231
232	232	Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
233	233
234		-[[image:image-20220611102908-2.png]]
	235	+[[image:image-20220610161724-10.png]]
235	235
236	236
237	237	(((
238		-(% style="color:blue" %)**Step 3**(%%)**:** The LDDS45 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
	239	+(% style="color:blue" %)**Step 3**(%%)**:** The LDDS75 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
239	239	)))
240	240
241	241	[[image:1654849068701-275.png]]
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246	246
247	247	(((
248	248	(((
249		-LDDS45 will uplink payload via LoRaWAN with below payload format:
	250	+LDDS75 will uplink payload via LoRaWAN with below payload format:
	251	+)))
250	250
251		-Uplink payload includes in total 8 bytes.
	253	+(((
	254	+Uplink payload includes in total 4 bytes.
	255	+Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
252	252	)))
253	253	)))
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275	275	=== 2.3.1  Battery Info ===
276	276
277	277
278		-Check the battery voltage for LDDS45.
	282	+Check the battery voltage for LDDS75.
279	279
280	280	Ex1: 0x0B45 = 2885mV
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286	286	=== 2.3.2  Distance ===
287	287
288	288	(((
289		-Get the distance. Flat object range 30mm - 4500mm.
	293	+Get the distance. Flat object range 280mm - 7500mm.
290	290	)))
291	291
292	292	(((
293		-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.**
	297	+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.**
294	294	)))
295	295
296	296
297	297	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
298		-* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
	302	+* 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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301	301
302	302	=== 2.3.3  Interrupt Pin ===
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304		-This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.3A0SetInterruptMode"]] for the hardware and software set up.
	308	+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.
305	305
306	306	**Example:**
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