Changes for page LA66 LoRaWAN Shield User Manual
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... ... @@ -1,264 +1,469 @@ 1 -{{box cssClass="floatinginfobox" title="**Contents**"}} 1 + 2 + 3 +**Table of Contents:** 4 + 2 2 {{toc/}} 3 -{{/box}} 4 4 5 -= LA66 LoRaWAN Module = 6 6 7 -== What is LA66 LoRaWAN Module == 8 8 9 += 1. LA66 LoRaWAN Module = 10 + 11 + 12 +== 1.1 What is LA66 LoRaWAN Module == 13 + 14 + 15 +((( 9 9 (% style="color:blue" %)**Dragino LA66**(%%) is a small wireless LoRaWAN module that offers a very compelling mix of long-range, low power consumption, and secure data transmission. It is designed to facilitate developers to quickly deploy industrial-level LoRaWAN and IoT solutions. It helps users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to create and connect your things everywhere. 17 +))) 10 10 19 +((( 11 11 (% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.4 protocol**(%%). The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely. This mature LoRaWAN stack greatly reduces the risk to make stable LoRaWAN Sensors to support different LoRaWAN servers and different countries' standards. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol. 21 +))) 12 12 23 +((( 13 13 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration. 25 +))) 14 14 27 +((( 15 15 Besides the support of the LoRaWAN protocol, LA66 also supports (% style="color:blue" %)**open-source peer-to-peer LoRa Protocol**(%%) for the none-LoRaWAN application. 29 +))) 16 16 31 +((( 17 17 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures. 33 +))) 18 18 19 -== Features == 20 20 36 +== 1.2 Features == 21 21 22 -== Specification == 38 +* Support LoRaWAN v1.0.4 protocol 39 +* Support peer-to-peer protocol 40 +* TCXO crystal to ensure RF performance on low temperature 41 +* SMD Antenna pad and i-pex antenna connector 42 +* Available in different frequency LoRaWAN frequency bands. 43 +* World-wide unique OTAA keys. 44 +* AT Command via UART-TTL interface 45 +* Firmware upgradable via UART interface 46 +* Ultra-long RF range 23 23 48 + 49 + 50 +== 1.3 Specification == 51 + 52 +* CPU: 32-bit 48 MHz 53 +* Flash: 256KB 54 +* RAM: 64KB 55 +* Input Power Range: 1.8v ~~ 3.7v 56 +* Power Consumption: < 4uA. 57 +* Frequency Range: 150 MHz ~~ 960 MHz 58 +* Maximum Power +22 dBm constant RF output 59 +* High sensitivity: -148 dBm 60 +* Temperature: 61 +** Storage: -55 ~~ +125℃ 62 +** Operating: -40 ~~ +85℃ 63 +* Humidity: 64 +** Storage: 5 ~~ 95% (Non-Condensing) 65 +** Operating: 10 ~~ 95% (Non-Condensing) 66 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 67 +* LoRa Rx current: <9 mA 68 +* I/O Voltage: 3.3v 69 + 70 + 71 + 72 +== 1.4 AT Command == 73 + 74 +AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents. 75 + 76 + 77 +== 1.5 Dimension == 78 + 24 24 [[image:image-20220517072526-1.png]] 25 25 26 -Input Power Range: 1.8v ~~ 3.7v 27 27 28 -Power Consumption: < 4uA. 29 29 30 - FrequencyRange:150 MHz ~~ 960 MHz83 +== 1.6 Pin Mapping == 31 31 32 -Maximum Power +22 dBm constant RF output 33 33 34 - High sensitivity:48 dBm86 +[[image:image-20220523101537-1.png]] 35 35 36 -Temperature: 37 37 38 -* Storage: -55 ~~ +125℃ 39 -* Operating: -40 ~~ +85℃ 40 40 41 - Humidity:90 +== 1.7 Land Pattern == 42 42 43 -* Storage: 5 ~~ 95% (Non-Condensing) 44 -* Operating: 10 ~~ 95% (Non-Condensing) 92 +[[image:image-20220517072821-2.png]] 45 45 46 -LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 47 47 48 -LoRa Rx current: <9 mA 49 49 50 - I/OVoltage:3.3v96 += 2. LA66 LoRaWAN Shield = 51 51 52 52 53 -== ATCommand==99 +== 2.1 Overview == 54 54 55 -A TCommand isvalid overMainTXDandMainRXD.SerialBaud Rateis 9600. AT commandscan be foundinAT Commanddocuments.101 +LA66 LoRaWAN Shield is the Arduino shield base on LA66. Users can use LA66 LoRaWAN Shield to rapidly add LoRaWAN or peer-to-peer LoRa wireless function to Arduino projects. 56 56 57 57 58 -== PinMapping==104 +== 2.2 Features == 59 59 60 -[[image:image-20220523101537-1.png]] 106 +* Arduino Shield base on LA66 LoRaWAN module 107 +* Support LoRaWAN v1.0.4 protocol 108 +* Support peer-to-peer protocol 109 +* TCXO crystal to ensure RF performance on low temperature 110 +* SMA connector 111 +* Available in different frequency LoRaWAN frequency bands. 112 +* World-wide unique OTAA keys. 113 +* AT Command via UART-TTL interface 114 +* Firmware upgradable via UART interface 115 +* Ultra-long RF range 61 61 62 -== Land Pattern == 63 63 64 -[[image:image-20220517072821-2.png]] 65 65 119 +== 2.3 Specification == 66 66 67 -== Part Number == 121 +* CPU: 32-bit 48 MHz 122 +* Flash: 256KB 123 +* RAM: 64KB 124 +* Input Power Range: 1.8v ~~ 3.7v 125 +* Power Consumption: < 4uA. 126 +* Frequency Range: 150 MHz ~~ 960 MHz 127 +* Maximum Power +22 dBm constant RF output 128 +* High sensitivity: -148 dBm 129 +* Temperature: 130 +** Storage: -55 ~~ +125℃ 131 +** Operating: -40 ~~ +85℃ 132 +* Humidity: 133 +** Storage: 5 ~~ 95% (Non-Condensing) 134 +** Operating: 10 ~~ 95% (Non-Condensing) 135 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 136 +* LoRa Rx current: <9 mA 137 +* I/O Voltage: 3.3v 68 68 69 -Part Number: **LA66-XXX** 70 70 71 -**XX**: The default frequency band 72 72 73 -* **AS923**: LoRaWAN AS923 band 74 -* **AU915**: LoRaWAN AU915 band 75 -* **EU433**: LoRaWAN EU433 band 76 -* **EU868**: LoRaWAN EU868 band 77 -* **KR920**: LoRaWAN KR920 band 78 -* **US915**: LoRaWAN US915 band 79 -* **IN865**: LoRaWAN IN865 band 80 -* **CN470**: LoRaWAN CN470 band 141 +== 2.4 Pin Mapping & LED == 81 81 82 -= LA66 LoRaWAN Shield = 83 83 84 -LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN. 85 85 86 -== PinMapping&LED==145 +== 2.5 Example: Use AT Command to communicate with LA66 module via Arduino UNO. == 87 87 88 -== Example: Use AT Command to communicate with LA66 module via Arduino UNO. == 89 89 90 -== Example: Join TTN network and send an uplink message, get downlink message. == 91 91 92 -== Example: LogTemperatureSensor(DHT11)and senddatatoTTN,showt inDataCake. ==149 +== 2.6 Example: Join TTN network and send an uplink message, get downlink message. == 93 93 94 -== Upgrade Firmware of LA66 LoRaWAN Shield == 95 95 96 -=== what needs to be used === 97 97 98 - 1.LA66LoRaWANShield thatneeds tobeupgraded153 +== 2.7 Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. == 99 99 100 -2.Arduino 101 101 102 -3.USB TO TTL 103 103 104 - [[image:image-20220602100052-2.png]]157 +== 2.8 Upgrade Firmware of LA66 LoRaWAN Shield == 105 105 106 -=== Wiring Schematic === 107 107 108 - [[image:image-20220602101311-3.png]]160 +=== 2.8.1 Items needed for update === 109 109 110 -LA66 LoRaWAN Shield >>>>>>>>>>>>USB TTL 162 +1. LA66 LoRaWAN Shield 163 +1. Arduino 164 +1. USB TO TTL Adapter 111 111 112 -GND >>>>>>>>>>>>GND 113 113 114 -TXD >>>>>>>>>>>>TXD 115 115 116 -RXD >>>>>>>>>>>>RXD 117 117 118 - JP6 of LA66 LoRaWAN Shieldneedstobe connectedwithyellow jumper cap169 +[[image:image-20220602100052-2.png||height="385" width="600"]] 119 119 120 -Connect to the PC after connecting the wires 121 121 122 - [[image:image-20220602102240-4.png]]172 +=== 2.8.2 Connection === 123 123 124 -=== Upgrade steps === 125 125 126 - ==== Dial theSW1 of theLA66 LoRaWAN Shield to the ISP's locationas showninthe figure below====175 +[[image:image-20220602101311-3.png||height="276" width="600"]] 127 127 128 -[[image:image-20220602102824-5.png]] 129 129 130 - ====PresstheRST switchon the LA66 LoRaWAN Shieldonce====178 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%) **<->** (% style="color:blue" %)**USB TTL** 131 131 132 -[[image:image-20220602104701-12.png]] 180 +(% style="background-color:yellow" %)**GND <-> GND 181 +TXD <-> TXD 182 +RXD <-> RXD** 133 133 134 -==== Open the upgrade application software ==== 135 135 136 - Softwaredownloadlink: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]185 +Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module) 137 137 187 +Connect USB TTL Adapter to PC after connecting the wires 188 + 189 + 190 +[[image:image-20220602102240-4.png||height="304" width="600"]] 191 + 192 + 193 +=== 2.8.3 Upgrade steps === 194 + 195 + 196 +==== 1. Switch SW1 to put in ISP position ==== 197 + 198 + 199 +[[image:image-20220602102824-5.png||height="306" width="600"]] 200 + 201 + 202 + 203 +==== 2. Press the RST switch once ==== 204 + 205 + 206 +[[image:image-20220602104701-12.png||height="285" width="600"]] 207 + 208 + 209 + 210 +==== 3. Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ==== 211 + 212 + 213 +(% style="color:blue" %)**1. Software download link: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]** 214 + 215 + 138 138 [[image:image-20220602103227-6.png]] 139 139 218 + 140 140 [[image:image-20220602103357-7.png]] 141 141 142 -===== Select the COM port corresponding to USB TTL ===== 143 143 222 + 223 +(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %) 224 +(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL** 225 + 226 + 144 144 [[image:image-20220602103844-8.png]] 145 145 146 -===== Select the bin file to burn ===== 147 147 230 + 231 +(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %) 232 +(% style="color:blue" %)**3. Select the bin file to burn** 233 + 234 + 148 148 [[image:image-20220602104144-9.png]] 149 149 237 + 150 150 [[image:image-20220602104251-10.png]] 151 151 240 + 152 152 [[image:image-20220602104402-11.png]] 153 153 154 -===== Click to start the download ===== 155 155 244 + 245 +(% class="wikigeneratedid" id="HClicktostartthedownload" %) 246 +(% style="color:blue" %)**4. Click to start the download** 247 + 156 156 [[image:image-20220602104923-13.png]] 157 157 158 -===== The following figure appears to prove that the burning is in progress ===== 159 159 251 + 252 +(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %) 253 +(% style="color:blue" %)**5. Check update process** 254 + 255 + 160 160 [[image:image-20220602104948-14.png]] 161 161 162 -===== The following picture appears to prove that the burning is successful ===== 163 163 259 + 260 +(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %) 261 +(% style="color:blue" %)**The following picture shows that the burning is successful** 262 + 164 164 [[image:image-20220602105251-15.png]] 165 165 166 -= LA66 USB LoRaWAN Adapter = 167 167 168 -LA66 USB LoRaWAN Adapter is the USB Adapter for LA66, it combines a USB TTL Chip and LA66 module which can easy to test the LoRaWAN feature by using PC or embedded device which has USB Interface. 169 169 170 - Beforeuse,pleasemakesure that the computer hasinstalledheCP2102 driver267 += 3. LA66 USB LoRaWAN Adapter = 171 171 172 -== Pin Mapping & LED == 173 173 174 -== ExampleSend & Get MessagesviaLoRaWAN in PC==270 +== 3.1 Overview == 175 175 176 - Connect the LA66 LoRaShieldto the PC272 +LA66 USB LoRaWAN Adapter is designed to fast turn USB devices to support LoRaWAN wireless features. It combines a CP2101 USB TTL Chip and LA66 LoRaWAN module which can easy to add LoRaWAN wireless feature to PC / Mobile phone or an embedded device that has USB Interface. 177 177 178 -[[image:image-20220602171217-1.png||height="615" width="915"]] 179 179 275 +== 3.2 Features == 276 + 277 +* LoRaWAN USB adapter base on LA66 LoRaWAN module 278 +* Ultra-long RF range 279 +* Support LoRaWAN v1.0.4 protocol 280 +* Support peer-to-peer protocol 281 +* TCXO crystal to ensure RF performance on low temperature 282 +* Spring RF antenna 283 +* Available in different frequency LoRaWAN frequency bands. 284 +* World-wide unique OTAA keys. 285 +* AT Command via UART-TTL interface 286 +* Firmware upgradable via UART interface 287 + 288 + 289 + 290 +== 3.3 Specification == 291 + 292 +* CPU: 32-bit 48 MHz 293 +* Flash: 256KB 294 +* RAM: 64KB 295 +* Input Power Range: 5v 296 +* Frequency Range: 150 MHz ~~ 960 MHz 297 +* Maximum Power +22 dBm constant RF output 298 +* High sensitivity: -148 dBm 299 +* Temperature: 300 +** Storage: -55 ~~ +125℃ 301 +** Operating: -40 ~~ +85℃ 302 +* Humidity: 303 +** Storage: 5 ~~ 95% (Non-Condensing) 304 +** Operating: 10 ~~ 95% (Non-Condensing) 305 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 306 +* LoRa Rx current: <9 mA 307 + 308 + 309 + 310 +== 3.4 Pin Mapping & LED == 311 + 312 + 313 + 314 +== 3.5 Example: Send & Get Messages via LoRaWAN in PC == 315 + 316 + 317 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage. 318 + 319 + 320 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC** 321 + 322 + 323 +[[image:image-20220602171217-1.png||height="538" width="800"]] 324 + 325 + 180 180 Open the serial port tool 181 181 182 182 [[image:image-20220602161617-8.png]] 183 183 184 -[[image:image-20220602161718-9.png||height="5 29" width="927"]]330 +[[image:image-20220602161718-9.png||height="457" width="800"]] 185 185 186 -Press the reset switch RST on the LA66 LoRa Shield. 187 187 188 -The following picture appears to prove that the LA66 LoRa Shield successfully entered the network 189 189 190 - [[image:image-20220602161935-10.png]]334 +(% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.** 191 191 192 - sendinstructions:AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>336 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network 193 193 338 + 339 +[[image:image-20220602161935-10.png||height="498" width="800"]] 340 + 341 + 342 + 343 +(% style="color:blue" %)**3. See Uplink Command** 344 + 345 +Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>** 346 + 194 194 example: AT+SENDB=01,02,8,05820802581ea0a5 195 195 196 -[[image:image-20220602162157-11.png]] 349 +[[image:image-20220602162157-11.png||height="497" width="800"]] 197 197 198 -Check to see if TTN received the message 199 199 200 -[[image:image-20220602162331-12.png||height="547" width="1044"]] 201 201 202 - ==ExampleSend&GetMessagesviaLoRaWAN inRPi==353 +(% style="color:blue" %)**4. Check to see if TTN received the message** 203 203 204 - Connect theLA66LoRa Shieldtothe RPI355 +[[image:image-20220602162331-12.png||height="420" width="800"]] 205 205 206 -[[image:image-20220602171233-2.png||height="592" width="881"]] 207 207 208 -Log in to the RPI's terminal and connect to the serial port 209 209 210 - [[image:image-20220602153146-3.png]]359 +== 3.6 Example: Send PC's CPU/RAM usage to TTN via python == 211 211 212 -Press the reset switch RST on the LA66 LoRa Shield. 213 -The following picture appears to prove that the LA66 LoRa Shield successfully entered the network 214 214 215 -[[image:imag e-20220602154928-5.png]]362 +**Use python as an example:**[[https:~~/~~/github.com/dragino/LA66/blob/main/Send_information_to_TTN_WindosPC.py>>https://github.com/dragino/LA66/blob/main/Send_information_to_TTN_WindosPC.py]] 216 216 217 -send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data> 218 218 365 +(% style="color:red" %)**Preconditions:** 366 + 367 +(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine** 368 + 369 +(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter is registered with TTN** 370 + 371 + 372 + 373 +(% style="color:blue" %)**Steps for usage:** 374 + 375 +(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter 376 + 377 +(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN 378 + 379 +[[image:image-20220602115852-3.png||height="450" width="1187"]] 380 + 381 + 382 + 383 +== 3.7 Example: Send & Get Messages via LoRaWAN in RPi == 384 + 385 + 386 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage. 387 + 388 + 389 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi** 390 + 391 +[[image:image-20220602171233-2.png||height="538" width="800"]] 392 + 393 + 394 + 395 +(% style="color:blue" %)**2. Install Minicom in RPi.** 396 + 397 +(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal 398 + 399 + (% style="background-color:yellow" %)**apt update** 400 + 401 + (% style="background-color:yellow" %)**apt install minicom** 402 + 403 + 404 +Use minicom to connect to the RPI's terminal 405 + 406 +[[image:image-20220602153146-3.png||height="439" width="500"]] 407 + 408 + 409 + 410 +(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.** 411 + 412 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network. 413 + 414 + 415 +[[image:image-20220602154928-5.png||height="436" width="500"]] 416 + 417 + 418 + 419 +(% style="color:blue" %)**4. Send Uplink message** 420 + 421 +Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>** 422 + 219 219 example: AT+SENDB=01,02,8,05820802581ea0a5 220 220 221 -[[image:image-20220602160339-6.png]] 222 222 223 - Check to seefTTN receivede message426 +[[image:image-20220602160339-6.png||height="517" width="600"]] 224 224 225 -[[image:image-20220602160627-7.png||height="468" width="1013"]] 226 226 227 -=== Install Minicom === 228 228 229 - EnterthefollowingcommandintheRPI terminal430 +Check to see if TTN received the message 230 230 231 -apt update432 +[[image:image-20220602160627-7.png||height="369" width="800"]] 232 232 233 -[[image:image-20220602143155-1.png]] 234 234 235 -apt install minicom 236 236 237 - [[image:image-20220602143744-2.png]]436 +== 3.8 Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. == 238 238 239 -=== Send PC's CPU/RAM usage to TTN via script. === 240 240 241 -==== Take python as an example: ==== 242 242 243 -== ===Preconditions:=====440 +== 3.9 Upgrade Firmware of LA66 USB LoRaWAN Adapter == 244 244 245 -1.LA66 USB LoRaWAN Adapter works fine 246 246 247 -2.LA66 USB LoRaWAN Adapter is registered with TTN 248 248 249 -===== Steps for usage ===== 250 250 251 - 1.Presstheresetswitch RESET onthe LA66 USB LoRaWANAdapter445 += 4. Order Info = 252 252 253 -2.Run the script and see the TTN 254 254 255 - [[image:image-20220602115852-3.png]]448 +**Part Number:** (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or** (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX** 256 256 257 257 451 +(% style="color:blue" %)**XXX**(%%): The default frequency band 258 258 259 -== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. == 453 +* (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band 454 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band 455 +* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band 456 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band 457 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band 458 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band 459 +* (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band 460 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band 461 +* (% style="color:red" %)**PP**(%%): Peer to Peer LoRa Protocol 260 260 261 261 262 -== Upgrade Firmware of LA66 USB LoRaWAN Adapter == 263 263 465 += 5. Reference = 466 + 467 +* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]] 468 + 264 264