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Last modified by Xiaoling on 2025/04/27 16:45
From version 170.4
edited by Xiaoling
on 2022/06/15 09:40
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To version 147.4
edited by Xiaoling
on 2022/06/10 17:40
Change comment: There is no comment for this version

Summary

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Title
... ... @@ -1,1 +1,1 @@
1 -LDDS20 - LoRaWAN Ultrasonic Liquid Level Sensor User Manual
1 +LDDS75 - LoRaWAN Distance Detection Sensor User Manual
Content
... ... @@ -1,97 +1,54 @@
1 1  (% style="text-align:center" %)
2 -[[image:1655254599445-662.png]]
2 +[[image:1654846127817-788.png]]
3 3  
4 +**Contents:**
4 4  
5 5  
6 6  
7 -**Table of Contents:**
8 8  
9 9  
10 10  
11 11  
12 12  
13 -
14 -
15 -
16 16  = 1.  Introduction =
17 17  
18 -== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
15 +== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
19 19  
20 20  (((
21 21  
22 22  
23 23  (((
24 -(((
25 -(((
26 -The Dragino LDDS20 is a (% style="color:#4472c4" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:#4472c4" %)**none-contact method **(%%)to measure the height of liquid in a container without opening the container, and send the value via LoRaWAN network to IoT Server
27 -)))
21 +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.
28 28  
29 -(((
30 -
31 -)))
32 32  
33 -(((
34 -The LDDS20 sensor is installed directly below the container to detect the height of the liquid level. User doesn’t need to open a hole on the container to be tested. The (% style="color:#4472c4" %)**none-contact measurement makes the measurement safety, easier and possible for some strict situation**. 
35 -)))
24 +It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
36 36  
37 -(((
38 -
39 -)))
40 40  
41 -(((
42 -LDDS20 uses ultrasonic sensing technology for distance measurement. LDDS20 is of high accuracy to measure various liquid such as: (% style="color:#4472c4" %)**toxic substances**(%%), (% style="color:#4472c4" %)**strong acids**(%%), (% style="color:#4472c4" %)**strong alkalis**(%%) and (% style="color:#4472c4" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
43 -)))
27 +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.
44 44  
45 -(((
46 -
47 -)))
48 48  
49 -(((
50 -The LoRa wireless technology used in LDDS20 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.
51 -)))
30 +LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
52 52  
53 -(((
54 -
55 -)))
56 56  
57 -(((
58 -LDDS20 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
59 -)))
33 +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.
60 60  
61 -(((
62 -
63 -)))
64 64  
65 -(((
66 -Each LDDS20 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.
36 +(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors
67 67  )))
68 -
69 -(((
70 -
71 71  )))
72 -)))
73 73  
74 -(((
75 -(((
76 -(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
77 -)))
78 -)))
79 -)))
80 -)))
81 81  
41 +[[image:1654847051249-359.png]]
82 82  
83 -[[image:1655255122126-327.png]]
84 84  
85 85  
86 -
87 87  == ​1.2  Features ==
88 88  
89 89  * LoRaWAN 1.0.3 Class A
90 90  * Ultra low power consumption
91 -* Liquid Level Measurement by Ultrasonic technology
92 -* Measure through container, No need to contact Liquid.
93 -* Valid level range 20mm - 2000mm
94 -* Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
49 +* Distance Detection by Ultrasonic technology
50 +* Flat object range 280mm - 7500mm
51 +* Accuracy: ±(1cm+S*0.3%) (S: Distance)
95 95  * Cable Length : 25cm
96 96  * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
97 97  * AT Commands to change parameters
... ... @@ -98,135 +98,67 @@
98 98  * Uplink on periodically
99 99  * Downlink to change configure
100 100  * IP66 Waterproof Enclosure
101 -* 8500mAh Battery for long term use
58 +* 4000mAh or 8500mAh Battery for long term use
102 102  
103 103  
104 -== 1.3  Suitable Container & Liquid ==
61 +== 1.3  Specification ==
105 105  
106 -* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
107 -* Container shape is regular, and surface is smooth.
108 -* Container Thickness:
109 -** Pure metal material.  2~~8mm, best is 3~~5mm
110 -** Pure non metal material: <10 mm
111 -* Pure liquid without irregular deposition.
63 +=== 1.3.1  Rated environmental conditions ===
112 112  
65 +[[image:image-20220610154839-1.png]]
113 113  
114 -== 1.4  Mechanical ==
67 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
115 115  
116 -[[image:image-20220615090910-1.png]]
69 +**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)**
117 117  
118 118  
119 -[[image:image-20220615090910-2.png]]
120 120  
73 +=== 1.3.2  Effective measurement range Reference beam pattern ===
121 121  
75 +**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
122 122  
123 -== 1.5  Install LDDS20 ==
124 124  
125 125  
126 -(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
79 +[[image:1654852253176-749.png]]
127 127  
128 -LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
129 129  
130 -[[image:image-20220615091045-3.png]]
82 +**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
131 131  
132 132  
85 +[[image:1654852175653-550.png]](% style="display:none" %) ** **
133 133  
134 -(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
135 135  
136 -For Metal Surface with paint, it is important to polish the surface, first use crude sand paper to polish the paint level , then use exquisite sand paper to polish the metal level to make it shine & smooth.
137 137  
138 -[[image:image-20220615092010-11.png]]
89 +== 1.5 ​ Applications ==
139 139  
91 +* Horizontal distance measurement
92 +* Liquid level measurement
93 +* Parking management system
94 +* Object proximity and presence detection
95 +* Intelligent trash can management system
96 +* Robot obstacle avoidance
97 +* Automatic control
98 +* Sewer
99 +* Bottom water level monitoring
140 140  
141 -No polish needed if the container is shine metal surface without paint or non-metal container.
142 142  
143 -[[image:image-20220615092044-12.png]]
102 +== 1.6  Pin mapping and power on ==
144 144  
145 145  
146 -(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
105 +[[image:1654847583902-256.png]]
147 147  
148 -Power on LDDS75, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point.
149 149  
150 150  
151 -It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
109 += 2.  Configure LDDS75 to connect to LoRaWAN network =
152 152  
153 -[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
154 -
155 -
156 -After paste the LDDS20 well, power on LDDS20. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life.
157 -
158 -
159 -(% style="color:red" %)**LED Status:**
160 -
161 -* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
162 -
163 -* (% style="color:blue" %)BLUE LED(% style="color:red" %) always ON(%%): Sensor is power on but doesn’t detect liquid. There is problem in installation point.
164 -* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
165 -
166 -LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
167 -
168 -
169 -(% style="color:red" %)**Note 2:**
170 -
171 -(% style="color:red" %)Ultrasonic coupling paste (%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
172 -
173 -
174 -(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 -
176 -
177 -Prepare Eproxy AB glue.
178 -
179 -Put Eproxy AB glue in the sensor and press it hard on the container installation point.
180 -
181 -Reset LDDS20 and see if the BLUE LED is slowly blinking.
182 -
183 -[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
184 -
185 -
186 -(% style="color:red" %)**Note 1:**
187 -
188 -Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
189 -
190 -
191 -(% style="color:red" %)**Note 2:**
192 -
193 -(% style="color:red" %)Eproxy AB glue(%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
194 -
195 -
196 -
197 -== 1.6 ​ Applications ==
198 -
199 -* Smart liquid control solution.
200 -* Smart liquefied gas solution.
201 -
202 -
203 -
204 -== 1.7  Precautions ==
205 -
206 -* At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
207 -* For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container.
208 -* When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.
209 -
210 -
211 -
212 -== 1.8  Pin mapping and power on ==
213 -
214 -
215 -[[image:1655257026882-201.png]]
216 -
217 -
218 -
219 -= 2.  Configure LDDS20 to connect to LoRaWAN network =
220 -
221 -
222 222  == 2.1  How it works ==
223 223  
224 224  (((
225 -The LDDS20 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.
114 +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
226 226  )))
227 227  
228 228  (((
229 -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.A0UsingtheATCommands"]]to set the keys in the LDDS20.
118 +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.
230 230  )))
231 231  
232 232  
... ... @@ -246,8 +246,6 @@
246 246  )))
247 247  
248 248  (((
249 -
250 -
251 251  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
252 252  )))
253 253  
... ... @@ -258,19 +258,11 @@
258 258  [[image:image-20220607170145-1.jpeg]]
259 259  
260 260  
261 -(((
262 262  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
263 -)))
264 264  
265 -(((
266 266  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
267 -)))
268 268  
269 -(((
270 -
271 -
272 272  **Add APP EUI in the application**
273 -)))
274 274  
275 275  [[image:image-20220610161353-4.png]]
276 276  
... ... @@ -313,15 +313,11 @@
313 313  == 2.3  ​Uplink Payload ==
314 314  
315 315  (((
316 -(((
317 317  LDDS75 will uplink payload via LoRaWAN with below payload format: 
318 -)))
319 319  
320 -(((
321 321  Uplink payload includes in total 4 bytes.
322 322  Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
323 323  )))
324 -)))
325 325  
326 326  (((
327 327  
... ... @@ -332,12 +332,12 @@
332 332  **Size (bytes)**
333 333  )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
334 334  |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
335 -[[Distance>>||anchor="H2.3.2A0Distance"]]
210 +[[Distance>>||anchor="H2.3.3A0Distance"]]
336 336  
337 337  (unit: mm)
338 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
339 -[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
340 -)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
213 +)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
214 +[[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
215 +)))|[[Sensor Flag>>path:#Sensor_Flag]]
341 341  
342 342  [[image:1654850511545-399.png]]
343 343  
... ... @@ -356,21 +356,18 @@
356 356  
357 357  === 2.3.2  Distance ===
358 358  
359 -(((
360 360  Get the distance. Flat object range 280mm - 7500mm.
361 -)))
362 362  
363 -(((
364 364  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.**
365 -)))
366 366  
367 367  
368 368  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
369 369  * 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.
370 370  
242 +
371 371  === 2.3.3  Interrupt Pin ===
372 372  
373 -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.
245 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.2A0SetInterruptMode"]] for the hardware and software set up.
374 374  
375 375  **Example:**
376 376  
... ... @@ -396,18 +396,14 @@
396 396  
397 397  === 2.3.5  Sensor Flag ===
398 398  
399 -(((
400 400  0x01: Detect Ultrasonic Sensor
401 -)))
402 402  
403 -(((
404 404  0x00: No Ultrasonic Sensor
405 -)))
406 406  
407 407  
276 +===
277 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
408 408  
409 -=== 2.3.6  Decode payload in The Things Network ===
410 -
411 411  While using TTN network, you can add the payload format to decode the payload.
412 412  
413 413  
... ... @@ -415,9 +415,7 @@
415 415  
416 416  The payload decoder function for TTN V3 is here:
417 417  
418 -(((
419 419  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/]]
420 -)))
421 421  
422 422  
423 423  
... ... @@ -943,20 +943,14 @@
943 943  * Solid ON for 5 seconds once device successful Join the network.
944 944  * Blink once when device transmit a packet.
945 945  
812 +
946 946  == 2.8  ​Firmware Change Log ==
947 947  
948 948  
949 -(((
950 950  **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/]]
951 -)))
952 952  
953 -(((
954 -
955 -)))
956 956  
957 -(((
958 958  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
959 -)))
960 960  
961 961  
962 962  
... ... @@ -965,13 +965,11 @@
965 965  
966 966  [[image:image-20220610172003-1.png]]
967 967  
968 -
969 969  [[image:image-20220610172003-2.png]]
970 970  
971 971  
831 +== 2.10  Battery Analysis ==
972 972  
973 -== 2.10  Battery Analysis ==
974 -
975 975  === 2.10.1  Battery Type ===
976 976  
977 977  The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
... ... @@ -980,7 +980,7 @@
980 980  The battery related documents as below:
981 981  
982 982  * (((
983 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
841 +[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
984 984  )))
985 985  * (((
986 986  [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
... ... @@ -996,7 +996,7 @@
996 996  === 2.10.2  Replace the battery ===
997 997  
998 998  (((
999 -You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
857 +You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
1000 1000  )))
1001 1001  
1002 1002  (((
... ... @@ -1004,12 +1004,12 @@
1004 1004  )))
1005 1005  
1006 1006  (((
1007 -The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
865 +The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can’t find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
1008 1008  )))
1009 1009  
1010 1010  
1011 1011  
1012 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
870 += 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
1013 1013  
1014 1014  (((
1015 1015  (((
... ... @@ -1019,7 +1019,7 @@
1019 1019  
1020 1020  * (((
1021 1021  (((
1022 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
880 +AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
1023 1023  )))
1024 1024  )))
1025 1025  * (((
... ... @@ -1100,9 +1100,7 @@
1100 1100  [[image:image-20220610172924-5.png]]
1101 1101  
1102 1102  
1103 -(((
1104 1104  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:
1105 -)))
1106 1106  
1107 1107  
1108 1108   [[image:image-20220610172924-6.png||height="601" width="860"]]
... ... @@ -1118,6 +1118,8 @@
1118 1118  [[image:image-20220610173409-7.png]]
1119 1119  
1120 1120  
977 +
978 +
1121 1121  (((
1122 1122  (% style="color:#037691" %)**Downlink Command: 0x01**
1123 1123  )))
... ... @@ -1126,104 +1126,232 @@
1126 1126  (((
1127 1127  Format: Command Code (0x01) followed by 3 bytes time value.
1128 1128  
1129 -(((
1130 1130  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1131 -)))
1132 1132  
1133 1133  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1134 1134  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1135 1135  )))
1136 -)))
1137 1137  
1138 1138  
994 +
995 +)))
1139 1139  
1140 -
1141 -
1142 1142  == 3.3  Set Interrupt Mode ==
1143 1143  
1144 1144  Feature, Set Interrupt mode for GPIO_EXIT.
1145 1145  
1001 +
1146 1146  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1147 1147  
1148 -[[image:image-20220610174917-9.png]]
1004 +[[image:image-20220610105907-1.png]]
1149 1149  
1150 1150  
1151 -(% style="color:#037691" %)**Downlink Command: 0x06**
1007 +**Downlink Command: 0x06**
1152 1152  
1153 1153  Format: Command Code (0x06) followed by 3 bytes.
1154 1154  
1155 -(((
1156 1156  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1157 -)))
1158 1158  
1159 1159  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1160 1160  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1161 1161  
1162 -= 4.  FAQ =
1163 1163  
1164 -== 4.1  What is the frequency plan for LDDS75? ==
1165 1165  
1166 -LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
1018 += 5.  Battery & How to replace =
1167 1167  
1020 +== 5.1  Battery Type ==
1168 1168  
1022 +(((
1023 +LLDS12 is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.
1024 +)))
1169 1169  
1170 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1026 +(((
1027 +The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1028 +)))
1171 1171  
1172 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1173 -When downloading the images, choose the required image file for download. ​
1030 +[[image:1654593587246-335.png]]
1174 1174  
1175 1175  
1033 +Minimum Working Voltage for the LLDS12:
1176 1176  
1177 -== 4.3  Can I use LDDS75 in condensation environment? ==
1035 +LLDS12:  2.45v ~~ 3.6v
1178 1178  
1179 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1180 1180  
1181 1181  
1039 +== 5.2  Replace Battery ==
1182 1182  
1183 -= 5.  Trouble Shooting =
1041 +(((
1042 +Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
1043 +)))
1184 1184  
1185 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1045 +(((
1046 +And make sure the positive and negative pins match.
1047 +)))
1186 1186  
1187 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1188 1188  
1189 1189  
1190 -== 5.2  AT Command input doesn't work ==
1051 +== 5.3  Power Consumption Analyze ==
1191 1191  
1053 +(((
1054 +Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
1055 +)))
1056 +
1057 +(((
1058 +Instruction to use as below:
1059 +)))
1060 +
1061 +
1062 +**Step 1**: Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
1063 +
1064 +[[https:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
1065 +
1066 +
1067 +**Step 2**: Open it and choose
1068 +
1069 +* Product Model
1070 +* Uplink Interval
1071 +* Working Mode
1072 +
1073 +And the Life expectation in difference case will be shown on the right.
1074 +
1075 +[[image:1654593605679-189.png]]
1076 +
1077 +
1078 +The battery related documents as below:
1079 +
1080 +* (((
1081 +[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1082 +)))
1083 +* (((
1084 +[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
1085 +)))
1086 +* (((
1087 +[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
1088 +)))
1089 +
1090 +[[image:image-20220607172042-11.png]]
1091 +
1092 +
1093 +
1094 +=== 5.3.1  ​Battery Note ===
1095 +
1096 +(((
1097 +The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.
1098 +)))
1099 +
1100 +
1101 +
1102 +=== ​5.3.2  Replace the battery ===
1103 +
1104 +(((
1105 +You can change the battery in the LLDS12.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
1106 +)))
1107 +
1108 +(((
1109 +The default battery pack of LLDS12 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
1110 +)))
1111 +
1112 +
1113 +
1114 += 6.  Use AT Command =
1115 +
1116 +== 6.1  Access AT Commands ==
1117 +
1118 +LLDS12 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LLDS12 for using AT command, as below.
1119 +
1120 +[[image:1654593668970-604.png]]
1121 +
1122 +**Connection:**
1123 +
1124 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1125 +
1126 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1127 +
1128 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1129 +
1130 +
1131 +(((
1132 +(((
1133 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1134 +)))
1135 +
1136 +(((
1137 +LLDS12 will output system info once power on as below:
1138 +)))
1139 +)))
1140 +
1141 +
1142 + [[image:1654593712276-618.png]]
1143 +
1144 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1145 +
1146 +
1147 += 7.  FAQ =
1148 +
1149 +== 7.1  How to change the LoRa Frequency Bands/Region ==
1150 +
1151 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1152 +When downloading the images, choose the required image file for download. ​
1153 +
1154 +
1155 += 8.  Trouble Shooting =
1156 +
1157 +== 8.1  AT Commands input doesn’t work ==
1158 +
1159 +
1160 +(((
1192 1192  In the case if user can see the console output but can’t type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
1162 +)))
1193 1193  
1164 +
1165 +== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
1166 +
1167 +
1194 1194  (((
1169 +(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance (such as glass and water, etc.)
1170 +)))
1171 +
1172 +(((
1173 +Troubleshooting: Please avoid use of this product under such circumstance in practice.
1174 +)))
1175 +
1176 +(((
1195 1195  
1196 1196  )))
1197 1197  
1180 +(((
1181 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1182 +)))
1198 1198  
1199 -= 6.  Order Info =
1184 +(((
1185 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1186 +)))
1200 1200  
1201 1201  
1202 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1203 1203  
1190 += 9.  Order Info =
1204 1204  
1205 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1206 1206  
1207 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1208 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1209 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1210 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1211 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1212 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1213 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1214 -* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1193 +Part Number: (% style="color:blue" %)**LLDS12-XX**
1215 1215  
1216 -(% style="color:blue" %)**YY**(%%): Battery Option
1217 1217  
1218 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1219 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1196 +(% style="color:blue" %)**XX**(%%): The default frequency band
1220 1220  
1221 -= 7. ​ Packing Info =
1198 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
1199 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1200 +* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1201 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1202 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1203 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1204 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1205 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1222 1222  
1207 += 10. ​ Packing Info =
1223 1223  
1209 +
1224 1224  **Package Includes**:
1225 1225  
1226 -* LDDS75 LoRaWAN Distance Detection Sensor x 1
1212 +* LLDS12 LoRaWAN LiDAR Distance Sensor x 1
1227 1227  
1228 1228  **Dimension and weight**:
1229 1229  
... ... @@ -1232,7 +1232,7 @@
1232 1232  * Package Size / pcs : cm
1233 1233  * Weight / pcs : g
1234 1234  
1235 -= 8.  ​Support =
1221 += 11.  ​Support =
1236 1236  
1237 1237  * 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.
1238 1238  * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].
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