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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
Change comment: There is no comment for this version
To version 173.1
edited by Xiaoling
on 2022/06/15 10:09
Change comment: Uploaded new attachment "image-20220615100930-15.png", version {1}

Summary

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... ... @@ -101,7 +101,6 @@
101 101  * 8500mAh Battery for long term use
102 102  
103 103  
104 -
105 105  == 1.3  Suitable Container & Liquid ==
106 106  
107 107  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
... ... @@ -112,7 +112,6 @@
112 112  * Pure liquid without irregular deposition.
113 113  
114 114  
115 -
116 116  == 1.4  Mechanical ==
117 117  
118 118  [[image:image-20220615090910-1.png]]
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133 133  
134 134  
135 135  
136 -(% style="color:blue" %)**Step 2**(%%): Polish the installation point.
134 +(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
137 137  
138 138  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.
139 139  
... ... @@ -142,11 +142,12 @@
142 142  
143 143  No polish needed if the container is shine metal surface without paint or non-metal container.
144 144  
145 -[[image:image-20220615092044-12.png]]
143 +[[image:image-20220615092044-12.png]]
146 146  
147 147  
148 -(% style="color:blue" %)**Step3: **(%%)Test the installation point.
149 149  
147 +(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
148 +
150 150  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.
151 151  
152 152  
... ... @@ -167,68 +167,68 @@
167 167  
168 168  LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
169 169  
170 -Note 2:
171 171  
172 -Ultrasonic coupling paste is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
170 +(% style="color:red" %)**Note 2:**
173 173  
172 +(% 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.
174 174  
175 -(% style="color:blue" %)**Step4: **(%%)Install use Epoxy ab glue.
176 176  
177 -[[image:image-20220615091045-8.png]]
178 178  
176 +(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
177 +
179 179  Prepare Eproxy AB glue.
180 180  
181 -
182 182  Put Eproxy AB glue in the sensor and press it hard on the container installation point.
183 183  
184 -
185 185  Reset LDDS20 and see if the BLUE LED is slowly blinking.
186 186  
187 -[[image:image-20220615091045-9.png]]
184 +[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
188 188  
189 -(% style="color:red" %)Note1:
190 190  
187 +(% style="color:red" %)**Note 1:**
188 +
191 191  Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
192 192  
193 193  
194 -(% style="color:red" %)Note 2:
192 +(% style="color:red" %)**Note 2:**
195 195  
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.
194 +(% 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.
197 197  
198 198  
199 199  
198 +== 1.6 ​ Applications ==
200 200  
200 +* Smart liquid control solution.
201 +* Smart liquefied gas solution.
201 201  
202 202  
203 -== 1.5 ​ Applications ==
204 204  
205 -* Horizontal distance measurement
206 -* Liquid level measurement
207 -* Parking management system
208 -* Object proximity and presence detection
209 -* Intelligent trash can management system
210 -* Robot obstacle avoidance
211 -* Automatic control
212 -* Sewer
213 -* Bottom water level monitoring
205 +== 1.7  Precautions ==
214 214  
215 -== 1.6  Pin mapping and power on ==
207 +* 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.
208 +* 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.
209 +* 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.
216 216  
217 217  
218 -[[image:1654847583902-256.png]]
219 219  
213 +== 1.8  Pin mapping and power on ==
220 220  
221 221  
222 -= 2.  Configure LDDS75 to connect to LoRaWAN network =
216 +[[image:1655257026882-201.png]]
223 223  
218 +
219 +
220 += 2.  Configure LDDS20 to connect to LoRaWAN network =
221 +
222 +
224 224  == 2.1  How it works ==
225 225  
226 226  (((
227 -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 +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 LDDS20. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value.
228 228  )))
229 229  
230 230  (((
231 -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 +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.
232 232  )))
233 233  
234 234  
... ... @@ -240,7 +240,7 @@
240 240  )))
241 241  
242 242  (((
243 -[[image:1654848616367-242.png]]
242 +[[image:1655257698953-697.png]]
244 244  )))
245 245  
246 246  (((
... ... @@ -250,11 +250,11 @@
250 250  (((
251 251  
252 252  
253 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
252 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS20.
254 254  )))
255 255  
256 256  (((
257 -Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
256 +Each LDDS20 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
258 258  )))
259 259  
260 260  [[image:image-20220607170145-1.jpeg]]
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284 284  [[image:image-20220610161353-7.png]]
285 285  
286 286  
286 +
287 287  You can also choose to create the device manually.
288 288  
289 289   [[image:image-20220610161538-8.png]]
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296 296  
297 297  
298 298  
299 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
299 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
300 300  
301 301  
302 302  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
303 303  
304 -[[image:image-20220610161724-10.png]]
304 +[[image:image-20220615095102-14.png]]
305 305  
306 306  
307 +
307 307  (((
308 -(% 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.
309 +(% style="color:blue" %)**Step 3**(%%)**:**  The LDDS20 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.
309 309  )))
310 310  
311 311  [[image:1654849068701-275.png]]
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316 316  
317 317  (((
318 318  (((
319 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
320 -)))
320 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
321 321  
322 -(((
323 -Uplink payload includes in total 4 bytes.
324 -Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
322 +Uplink payload includes in total 8 bytes.
323 +Payload for firmware version v1.1.4. . Before v1.1.3, there is only 5 bytes: BAT and Distance(Please check manual v1.2.0 if you have 5 bytes payload).
325 325  )))
326 326  )))
327 327  
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348 348  === 2.3.1  Battery Info ===
349 349  
350 350  
351 -Check the battery voltage for LDDS75.
350 +Check the battery voltage for LDDS20.
352 352  
353 353  Ex1: 0x0B45 = 2885mV
354 354  
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359 359  === 2.3.2  Distance ===
360 360  
361 361  (((
362 -Get the distance. Flat object range 280mm - 7500mm.
361 +Get the distance. Flat object range 20mm - 2000mm.
363 363  )))
364 364  
365 365  (((
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.**
365 +For example, if the data you get from the register is __0x06 0x05__, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0605(H) = 1541 (D) = 1541 mm.**
367 367  )))
368 368  
368 +* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
369 +* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
369 369  
370 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
371 -* 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.
372 372  
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.
375 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
376 376  
377 377  **Example:**
378 378  
... ... @@ -418,7 +418,7 @@
418 418  The payload decoder function for TTN V3 is here:
419 419  
420 420  (((
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/]]
421 +LDDS20 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS20/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
422 422  )))
423 423  
424 424  
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