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Blink LEDs on an Adafruit ESP32-S2 QT PY when network traffic happens.
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README.md

Blink LEDs with network packets

Blinking cube at 37C3

Using an ESP32-S2 to blink NeoPixels based on Wifi traffic

Blinks white LEDs on receiving a ping, changes color of left or right part of the LED ring depending on the protocol used (TCP/UDP).

Color is determined by the port receiving the packet (pixels.ColorHSV(port).

Hardware setup

  • Adafruit QT Py ESP32-S2
  • Adafruit NeoPixel Driver BFF
  • 8 Pixel LED ring

Software setup

Built using platformio, espidf, Arduino, vim, and love. Works by hooking the LWIP TCP/IP stack with a custom function.

If you decide to run this, make sure you update platformio.ini with your board details!

Build

pio run

Flash

pio run -t upload