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3	3
4	4	**Contents:**
5	5
	6	+{{toc/}}
6	6
7	7
8	8
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20	20
21	21	(((
22	22	(((
23		-The Dragino LDDS45 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS45 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
	24	+The Dragino LDDS75 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
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26	26	(((
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36	36	)))
37	37
38	38	(((
39		-The LoRa wireless technology used in LDDS45 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
	40	+The LoRa wireless technology used in LDDS75 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
40	40	)))
41	41
42	42	(((
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44	44	)))
45	45
46	46	(((
47		-LDDS45 is powered by (% style="color:#4472c4" %)** 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
	48	+LDDS75 is powered by (% style="color:#4472c4" %)** 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
48	48	)))
49	49
50	50	(((
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52	52	)))
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54	54	(((
55		-Each LDDS45 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
	56	+Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
56	56	)))
57	57
58	58	(((
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75	75	== ​1.2  Features ==
76	76
77	77	* LoRaWAN 1.0.3 Class A
78		-* Ultra-low power consumption
	79	+* Ultra low power consumption
79	79	* Distance Detection by Ultrasonic technology
80		-* Flat object range 30mm - 4500mm
	81	+* Flat object range 280mm - 7500mm
81	81	* Accuracy: ±(1cm+S*0.3%) (S: Distance)
82		-* Measure Angle: 60°
83	83	* Cable Length : 25cm
84	84	* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
85	85	* AT Commands to change parameters
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86	86	* Uplink on periodically
87	87	* Downlink to change configure
88	88	* IP66 Waterproof Enclosure
89		-* 8500mAh Battery for long term use
	89	+* 4000mAh or 8500mAh Battery for long term use
90	90
91	91
	92	+
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		-
99	99	(((
100		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
101		-
102		-**~ 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)**
	100	+**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)**
103	103	)))
104	104
105	105
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136	136	* Bottom water level monitoring
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138	138
	137	+
139	139	== 1.6  Pin mapping and power on ==
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141	141
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143	143
144	144
145	145
146		-= 2.  Configure LDDS45 to connect to LoRaWAN network =
	145	+= 2.  Configure LDDS75 to connect to LoRaWAN network =
147	147
148	148	== 2.1  How it works ==
149	149
150	150	(((
151		-The LDDS45 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS45. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
	150	+The LDDS75 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
152	152	)))
153	153
154	154	(((
155		-In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS45.
	154	+In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS75.
156	156	)))
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161	161
162	162	(((
163	163	Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LG308>>url:http://www.dragino.com/products/lora/item/140-lg308.html]] as a LoRaWAN gateway in this example.
164		-
165		-
166	166	)))
167	167
168		-[[image:1654913911773-521.png]]
169		-
170		-
171	171	(((
172		-
	166	+[[image:1654848616367-242.png]]
173	173	)))
174	174
175	175	(((
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177	177	)))
178	178
179	179	(((
180		-(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS45.
	174	+(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
181	181	)))
182	182
183	183	(((
184		-Each LDDS45 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
	178	+Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
185	185	)))
186	186
187	187	[[image:image-20220607170145-1.jpeg]]
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208	208
209	209	[[image:image-20220610161353-7.png]]
210	210
211		-**Choose LDDS75 instead of LDDS45 is ok. They are of the same payload**
212	212
213		-
214		-
215	215	You can also choose to create the device manually.
216	216
217	217	[[image:image-20220610161538-8.png]]
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224	224
225	225
226	226
227		-(% style="color:blue" %)**Step 2**(%%): Power on LDDS45
	218	+(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
228	228
229	229
230	230	Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
231	231
232		-[[image:image-20220611102908-2.png]]
	223	+[[image:image-20220610161724-10.png]]
233	233
234	234
235	235	(((
236		-(% 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.
	227	+(% 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.
237	237	)))
238	238
239	239	[[image:1654849068701-275.png]]
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244	244
245	245	(((
246	246	(((
247		-LDDS45 will uplink payload via LoRaWAN with below payload format:
	238	+LDDS75 will uplink payload via LoRaWAN with below payload format:
	239	+)))
248	248
249		-Uplink payload includes in total 8 bytes.
	241	+(((
	242	+Uplink payload includes in total 4 bytes.
	243	+Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
250	250	)))
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273	273	=== 2.3.1  Battery Info ===
274	274
275	275
276		-Check the battery voltage for LDDS45.
	270	+Check the battery voltage for LDDS75.
277	277
278	278	Ex1: 0x0B45 = 2885mV
279	279
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284	284	=== 2.3.2  Distance ===
285	285
286	286	(((
287		-Get the distance. Flat object range 30mm - 4500mm.
	281	+Get the distance. Flat object range 280mm - 7500mm.
288	288	)))
289	289
290	290	(((
291		-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.**
	285	+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.**
292	292	)))
293	293
294	294
295	295	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
296		-* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
	290	+* 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.
297	297
298	298
	293	+
299	299	=== 2.3.3  Interrupt Pin ===
300	300
301		-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.
	296	+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.
302	302
303	303	**Example:**
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318	318
319	319	If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
320	320
	316	+(% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
321	321
322	322
	319	+
323	323	=== 2.3.5  Sensor Flag ===
324	324
325	325	(((
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870	870	* Blink once when device transmit a packet.
871	871
872	872
	870	+
873	873	== 2.8  ​Firmware Change Log ==
874	874
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1087	1087	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1088	1088
1089	1089
	1088	+
1090	1090	= 4.  FAQ =
1091	1091
1092	1092	== 4.1  What is the frequency plan for LDDS75? ==
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1147	1147	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1148	1148
1149	1149
	1149	+
1150	1150	= 7. ​ Packing Info =
1151	1151
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1162	1162	* Weight / pcs : g
1163	1163
1164	1164
	1165	+
1165	1165	= 8.  ​Support =
1166	1166
1167	1167	* 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.

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