Implement a secure ICS protocol targeting LoRa Node151 microcontroller for controlling irrigation.
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  1. https://stackoverflow.com/questions/8877228/opencv-detect-blinking-lights
  2. ffmpeg -i PXL_20220806_231420638.mp4 -filter:v "crop=200:200:725:275" output.mp4
  3. PXL_20220806_231420638.mp4 725x275 200x200
  4. PXL_20220806_231644224.mp4 790x380 200x200
  5. Mon Aug 8 17:24:55 PDT 2022
  6. PXL_20220808_233318199.mp4
  7. captures w/ a delay of 35ms instead of previous 34ms (for 4224.mp4)
  8. also w/ a smaller resistor, 68Ω instead of 100Ω.
  9. https://developer.android.com/reference/android/hardware/camera2/CaptureResult.html#SENSOR_EXPOSURE_TIME
  10. https://developer.android.com/reference/android/hardware/camera2/CaptureRequest#SENSOR_EXPOSURE_TIME