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Last modified by Xiaoling on 2025/04/27 16:45
From version 170.5
edited by Xiaoling
on 2022/06/15 09:46
Change comment: There is no comment for this version
To version 169.1
edited by Xiaoling
on 2022/06/15 09:23
Change comment: Uploaded new attachment "image-20220615092327-13.png", version {1}

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101 101  * 8500mAh Battery for long term use
102 102  
103 103  
104 -
105 -
106 106  == 1.3  Suitable Container & Liquid ==
107 107  
108 108  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
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113 113  * Pure liquid without irregular deposition.
114 114  
115 115  
116 -
117 117  == 1.4  Mechanical ==
118 118  
119 119  [[image:image-20220615090910-1.png]]
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134 134  
135 135  
136 136  
137 -(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
134 +(% style="color:blue" %)**Step 2**(%%): Polish the installation point.
138 138  
139 139  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.
140 140  
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143 143  
144 144  No polish needed if the container is shine metal surface without paint or non-metal container.
145 145  
146 -[[image:image-20220615092044-12.png]]
143 +[[image:image-20220615092044-12.png]]
147 147  
148 148  
149 -(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
146 +(% style="color:blue" %)**Step3: **(%%)Test the installation point.
150 150  
151 151  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.
152 152  
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153 153  
154 154  It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
155 155  
156 -[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
157 157  
158 158  
155 +|(((
156 +BLUE LED
157 +)))
158 +
159 +[[image:image-20220615091045-6.png]] [[image:image-20220615091045-7.png]]
160 +
161 +
162 +
159 159  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.
160 160  
161 161  
162 -(% style="color:red" %)**LED Status:**
166 +(% style="color:blue" %)LED Status:
163 163  
164 164  * Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
165 165  
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168 168  
169 169  LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
170 170  
175 +Note 2:
171 171  
172 -(% style="color:red" %)**Note 2:**
177 +Ultrasonic coupling paste is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
173 173  
174 -(% 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.
175 175  
180 +(% style="color:blue" %)**Step4: **(%%)Install use Epoxy ab glue.
176 176  
177 -(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
182 +[[image:image-20220615091045-8.png]]
178 178  
179 -
180 180  Prepare Eproxy AB glue.
181 181  
186 +
182 182  Put Eproxy AB glue in the sensor and press it hard on the container installation point.
183 183  
189 +
184 184  Reset LDDS20 and see if the BLUE LED is slowly blinking.
185 185  
186 -[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
192 +[[image:image-20220615091045-9.png]]
187 187  
194 +(% style="color:red" %)Note1:
188 188  
189 -(% style="color:red" %)**Note 1:**
190 -
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:**
199 +(% style="color:red" %)Note 2:
195 195  
196 -(% 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.
201 +(% 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.
197 197  
198 198  
199 199  
200 -== 1.6 ​ Applications ==
201 201  
202 -* Smart liquid control solution.
203 -* Smart liquefied gas solution.
204 204  
205 205  
206 -== 1.7  Precautions ==
208 +== 1.5 ​ Applications ==
207 207  
208 -* 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.
209 -* 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.
210 -* 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.
210 +* Horizontal distance measurement
211 +* Liquid level measurement
212 +* Parking management system
213 +* Object proximity and presence detection
214 +* Intelligent trash can management system
215 +* Robot obstacle avoidance
216 +* Automatic control
217 +* Sewer
218 +* Bottom water level monitoring
211 211  
220 +== 1.6  Pin mapping and power on ==
212 212  
213 -== 1.8  Pin mapping and power on ==
214 214  
223 +[[image:1654847583902-256.png]]
215 215  
216 -[[image:1655257026882-201.png]]
217 217  
218 218  
227 += 2.  Configure LDDS75 to connect to LoRaWAN network =
219 219  
220 -= 2.  Configure LDDS20 to connect to LoRaWAN network =
221 -
222 -
223 223  == 2.1  How it works ==
224 224  
225 225  (((
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 LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value.
232 +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
227 227  )))
228 228  
229 229  (((
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.
236 +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.
231 231  )))
232 232  
233 233  
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