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Last modified by Xiaoling on 2025/04/27 16:45
From version 169.2
edited by Xiaoling
on 2022/06/15 09:25
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To version 147.5
edited by Xiaoling
on 2022/06/10 17:41
Change comment: There is no comment for this version

Summary

Details

Page properties
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
... ... @@ -98,108 +98,36 @@
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  
60 +== 1.3  Specification ==
103 103  
62 +=== 1.3.1  Rated environmental conditions ===
104 104  
105 -== 1.3  Suitable Container & Liquid ==
64 +[[image:image-20220610154839-1.png]]
106 106  
107 -* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
108 -* Container shape is regular, and surface is smooth.
109 -* Container Thickness:
110 -** Pure metal material.  2~~8mm, best is 3~~5mm
111 -** Pure non metal material: <10 mm
112 -* Pure liquid without irregular deposition.
66 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
113 113  
68 +**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)**
114 114  
115 115  
116 -== 1.4  Mechanical ==
117 117  
118 -[[image:image-20220615090910-1.png]]
72 +=== 1.3.2  Effective measurement range Reference beam pattern ===
119 119  
74 +**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
120 120  
121 -[[image:image-20220615090910-2.png]]
122 122  
123 123  
78 +[[image:1654852253176-749.png]]
124 124  
125 -== 1.5  Install LDDS20 ==
126 126  
81 +**(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.**
127 127  
128 -(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
129 129  
130 -LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
84 +[[image:1654852175653-550.png]](% style="display:none" %) ** **
131 131  
132 -[[image:image-20220615091045-3.png]]
133 133  
134 134  
135 -
136 -(% style="color:blue" %)**Step 2**(%%): Polish the installation point.
137 -
138 -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.
139 -
140 -[[image:image-20220615092010-11.png]]
141 -
142 -
143 -No polish needed if the container is shine metal surface without paint or non-metal container.
144 -
145 -[[image:image-20220615092044-12.png]]
146 -
147 -
148 -(% style="color:blue" %)**Step3: **(%%)Test the installation point.
149 -
150 -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.
151 -
152 -
153 -It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
154 -
155 -[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
156 -
157 -
158 -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.
159 -
160 -
161 -(% style="color:red" %)**LED Status:**
162 -
163 -* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
164 -
165 -* (% 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.
166 -* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
167 -
168 -LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
169 -
170 -Note 2:
171 -
172 -Ultrasonic coupling paste is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
173 -
174 -
175 -(% style="color:blue" %)**Step4: **(%%)Install use Epoxy ab glue.
176 -
177 -[[image:image-20220615091045-8.png]]
178 -
179 -Prepare Eproxy AB glue.
180 -
181 -
182 -Put Eproxy AB glue in the sensor and press it hard on the container installation point.
183 -
184 -
185 -Reset LDDS20 and see if the BLUE LED is slowly blinking.
186 -
187 -[[image:image-20220615091045-9.png]]
188 -
189 -(% style="color:red" %)Note1:
190 -
191 -Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
192 -
193 -
194 -(% style="color:red" %)Note 2:
195 -
196 -(% style="color:blue" %)Eproxy AB glue(%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
197 -
198 -
199 -
200 -
201 -
202 -
203 203  == 1.5 ​ Applications ==
204 204  
205 205  * Horizontal distance measurement
... ... @@ -248,8 +248,6 @@
248 248  )))
249 249  
250 250  (((
251 -
252 -
253 253  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
254 254  )))
255 255  
... ... @@ -260,19 +260,11 @@
260 260  [[image:image-20220607170145-1.jpeg]]
261 261  
262 262  
263 -(((
264 264  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
265 -)))
266 266  
267 -(((
268 268  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
269 -)))
270 270  
271 -(((
272 -
273 -
274 274  **Add APP EUI in the application**
275 -)))
276 276  
277 277  [[image:image-20220610161353-4.png]]
278 278  
... ... @@ -315,15 +315,11 @@
315 315  == 2.3  ​Uplink Payload ==
316 316  
317 317  (((
318 -(((
319 319  LDDS75 will uplink payload via LoRaWAN with below payload format: 
320 -)))
321 321  
322 -(((
323 323  Uplink payload includes in total 4 bytes.
324 324  Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
325 325  )))
326 -)))
327 327  
328 328  (((
329 329  
... ... @@ -334,12 +334,12 @@
334 334  **Size (bytes)**
335 335  )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
336 336  |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
337 -[[Distance>>||anchor="H2.3.2A0Distance"]]
208 +[[Distance>>||anchor="H2.3.3A0Distance"]]
338 338  
339 339  (unit: mm)
340 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
341 -[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
342 -)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
211 +)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
212 +[[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
213 +)))|[[Sensor Flag>>path:#Sensor_Flag]]
343 343  
344 344  [[image:1654850511545-399.png]]
345 345  
... ... @@ -358,13 +358,9 @@
358 358  
359 359  === 2.3.2  Distance ===
360 360  
361 -(((
362 362  Get the distance. Flat object range 280mm - 7500mm.
363 -)))
364 364  
365 -(((
366 366  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.**
367 -)))
368 368  
369 369  
370 370  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
... ... @@ -372,7 +372,7 @@
372 372  
373 373  === 2.3.3  Interrupt Pin ===
374 374  
375 -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.
242 +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.
376 376  
377 377  **Example:**
378 378  
... ... @@ -398,18 +398,14 @@
398 398  
399 399  === 2.3.5  Sensor Flag ===
400 400  
401 -(((
402 402  0x01: Detect Ultrasonic Sensor
403 -)))
404 404  
405 -(((
406 406  0x00: No Ultrasonic Sensor
407 -)))
408 408  
409 409  
273 +===
274 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
410 410  
411 -=== 2.3.6  Decode payload in The Things Network ===
412 -
413 413  While using TTN network, you can add the payload format to decode the payload.
414 414  
415 415  
... ... @@ -417,9 +417,7 @@
417 417  
418 418  The payload decoder function for TTN V3 is here:
419 419  
420 -(((
421 421  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/]]
422 -)))
423 423  
424 424  
425 425  
... ... @@ -948,17 +948,10 @@
948 948  == 2.8  ​Firmware Change Log ==
949 949  
950 950  
951 -(((
952 952  **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/]]
953 -)))
954 954  
955 -(((
956 -
957 -)))
958 958  
959 -(((
960 960  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
961 -)))
962 962  
963 963  
964 964  
... ... @@ -967,11 +967,9 @@
967 967  
968 968  [[image:image-20220610172003-1.png]]
969 969  
970 -
971 971  [[image:image-20220610172003-2.png]]
972 972  
973 973  
974 -
975 975  == 2.10  Battery Analysis ==
976 976  
977 977  === 2.10.1  Battery Type ===
... ... @@ -982,7 +982,7 @@
982 982  The battery related documents as below:
983 983  
984 984  * (((
985 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
837 +[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
986 986  )))
987 987  * (((
988 988  [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
... ... @@ -998,7 +998,7 @@
998 998  === 2.10.2  Replace the battery ===
999 999  
1000 1000  (((
1001 -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.
853 +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.
1002 1002  )))
1003 1003  
1004 1004  (((
... ... @@ -1006,12 +1006,12 @@
1006 1006  )))
1007 1007  
1008 1008  (((
1009 -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)
861 +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)
1010 1010  )))
1011 1011  
1012 1012  
1013 1013  
1014 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
866 += 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
1015 1015  
1016 1016  (((
1017 1017  (((
... ... @@ -1021,7 +1021,7 @@
1021 1021  
1022 1022  * (((
1023 1023  (((
1024 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
876 +AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
1025 1025  )))
1026 1026  )))
1027 1027  * (((
... ... @@ -1102,9 +1102,7 @@
1102 1102  [[image:image-20220610172924-5.png]]
1103 1103  
1104 1104  
1105 -(((
1106 1106  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:
1107 -)))
1108 1108  
1109 1109  
1110 1110   [[image:image-20220610172924-6.png||height="601" width="860"]]
... ... @@ -1120,6 +1120,8 @@
1120 1120  [[image:image-20220610173409-7.png]]
1121 1121  
1122 1122  
973 +
974 +
1123 1123  (((
1124 1124  (% style="color:#037691" %)**Downlink Command: 0x01**
1125 1125  )))
... ... @@ -1128,26 +1128,24 @@
1128 1128  (((
1129 1129  Format: Command Code (0x01) followed by 3 bytes time value.
1130 1130  
1131 -(((
1132 1132  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1133 -)))
1134 1134  
1135 1135  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1136 1136  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1137 1137  )))
1138 -)))
1139 1139  
1140 1140  
990 +
991 +)))
1141 1141  
1142 -
1143 -
1144 1144  == 3.3  Set Interrupt Mode ==
1145 1145  
1146 1146  Feature, Set Interrupt mode for GPIO_EXIT.
1147 1147  
997 +
1148 1148  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1149 1149  
1150 -[[image:image-20220610174917-9.png]]
1000 +[[image:image-20220610105907-1.png]]
1151 1151  
1152 1152  
1153 1153  (% style="color:#037691" %)**Downlink Command: 0x06**
... ... @@ -1154,78 +1154,207 @@
1154 1154  
1155 1155  Format: Command Code (0x06) followed by 3 bytes.
1156 1156  
1157 -(((
1158 1158  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1159 -)))
1160 1160  
1161 1161  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1162 1162  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1163 1163  
1164 -= 4.  FAQ =
1165 1165  
1166 -== 4.1  What is the frequency plan for LDDS75? ==
1013 += 5.  Battery & How to replace =
1167 1167  
1168 -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"]]
1015 +== 5.1  Battery Type ==
1169 1169  
1017 +(((
1018 +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.
1019 +)))
1170 1170  
1021 +(((
1022 +The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1023 +)))
1171 1171  
1172 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1025 +[[image:1654593587246-335.png]]
1173 1173  
1174 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1175 -When downloading the images, choose the required image file for download. ​
1176 1176  
1028 +Minimum Working Voltage for the LLDS12:
1177 1177  
1030 +LLDS12:  2.45v ~~ 3.6v
1178 1178  
1179 -== 4.3  Can I use LDDS75 in condensation environment? ==
1180 1180  
1181 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1182 1182  
1034 +== 5.2  Replace Battery ==
1183 1183  
1036 +(((
1037 +Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
1038 +)))
1184 1184  
1185 -= 5.  Trouble Shooting =
1040 +(((
1041 +And make sure the positive and negative pins match.
1042 +)))
1186 1186  
1187 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1188 1188  
1189 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1190 1190  
1046 +== 5.3  Power Consumption Analyze ==
1191 1191  
1192 -== 5.2  AT Command input doesn't work ==
1048 +(((
1049 +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.
1050 +)))
1193 1193  
1052 +(((
1053 +Instruction to use as below:
1054 +)))
1055 +
1056 +
1057 +**Step 1**: Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
1058 +
1059 +[[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/]]
1060 +
1061 +
1062 +**Step 2**: Open it and choose
1063 +
1064 +* Product Model
1065 +* Uplink Interval
1066 +* Working Mode
1067 +
1068 +And the Life expectation in difference case will be shown on the right.
1069 +
1070 +[[image:1654593605679-189.png]]
1071 +
1072 +
1073 +The battery related documents as below:
1074 +
1075 +* (((
1076 +[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1077 +)))
1078 +* (((
1079 +[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
1080 +)))
1081 +* (((
1082 +[[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]]
1083 +)))
1084 +
1085 +[[image:image-20220607172042-11.png]]
1086 +
1087 +
1088 +
1089 +=== 5.3.1  ​Battery Note ===
1090 +
1091 +(((
1092 +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.
1093 +)))
1094 +
1095 +
1096 +
1097 +=== ​5.3.2  Replace the battery ===
1098 +
1099 +(((
1100 +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.
1101 +)))
1102 +
1103 +(((
1104 +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)
1105 +)))
1106 +
1107 +
1108 +
1109 += 6.  Use AT Command =
1110 +
1111 +== 6.1  Access AT Commands ==
1112 +
1113 +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.
1114 +
1115 +[[image:1654593668970-604.png]]
1116 +
1117 +**Connection:**
1118 +
1119 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1120 +
1121 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1122 +
1123 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1124 +
1125 +
1126 +(((
1127 +(((
1128 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1129 +)))
1130 +
1131 +(((
1132 +LLDS12 will output system info once power on as below:
1133 +)))
1134 +)))
1135 +
1136 +
1137 + [[image:1654593712276-618.png]]
1138 +
1139 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1140 +
1141 +
1142 += 7.  FAQ =
1143 +
1144 +== 7.1  How to change the LoRa Frequency Bands/Region ==
1145 +
1146 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1147 +When downloading the images, choose the required image file for download. ​
1148 +
1149 +
1150 += 8.  Trouble Shooting =
1151 +
1152 +== 8.1  AT Commands input doesn’t work ==
1153 +
1154 +
1155 +(((
1194 1194  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.
1157 +)))
1195 1195  
1159 +
1160 +== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
1161 +
1162 +
1196 1196  (((
1164 +(% 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.)
1165 +)))
1166 +
1167 +(((
1168 +Troubleshooting: Please avoid use of this product under such circumstance in practice.
1169 +)))
1170 +
1171 +(((
1197 1197  
1198 1198  )))
1199 1199  
1175 +(((
1176 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1177 +)))
1200 1200  
1201 -= 6.  Order Info =
1179 +(((
1180 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1181 +)))
1202 1202  
1203 1203  
1204 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1205 1205  
1185 += 9.  Order Info =
1206 1206  
1207 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1208 1208  
1209 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1210 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1211 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1212 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1213 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1214 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1215 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1216 -* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1188 +Part Number: (% style="color:blue" %)**LLDS12-XX**
1217 1217  
1218 -(% style="color:blue" %)**YY**(%%): Battery Option
1219 1219  
1220 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1221 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1191 +(% style="color:blue" %)**XX**(%%): The default frequency band
1222 1222  
1223 -= 7. ​ Packing Info =
1193 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
1194 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1195 +* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1196 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1197 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1198 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1199 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1200 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1224 1224  
1202 += 10. ​ Packing Info =
1225 1225  
1204 +
1226 1226  **Package Includes**:
1227 1227  
1228 -* LDDS75 LoRaWAN Distance Detection Sensor x 1
1207 +* LLDS12 LoRaWAN LiDAR Distance Sensor x 1
1229 1229  
1230 1230  **Dimension and weight**:
1231 1231  
... ... @@ -1234,7 +1234,7 @@
1234 1234  * Package Size / pcs : cm
1235 1235  * Weight / pcs : g
1236 1236  
1237 -= 8.  ​Support =
1216 += 11.  ​Support =
1238 1238  
1239 1239  * 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.
1240 1240  * 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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