AirGradientMatrixDisplay

Code for displaying Air Gradient sensor information on a CircuitPython LED RGB matrix

Requires

• CircuitPython 9+
• 32x32 LED RGB Matrix
• Adafruit Metro M4 Airlift Lite (or equivalent)
• Adafruit RGB Matrix Shield (with CLK to A4 modification) (or equivalent)
• 5v power source
• AirGradient sensor
• Libraries (not all likely needed)
  • adafruit_bitmap_font
  • adafruit_bus_device
  • adafruit_connection_manager
  • adafruit_display_text
  • adafruit_display_shapes
  • adafruit_esp32spi
  • adafruit_fakerequests
  • adafruit_io
  • adafruit_matrixportal
  • adafruit_minimqtt
  • adafruit_miniqr
  • adafruit_pixelbuf
  • adafruit_portalbase
  • adafruit_requests
  • adafruit_ticks
  • neopixel
  • simpleio

Configuration

• Modify settings.toml

Display

• Temperature
  • Changes color based on how cold/hot it is
• Humidity (corrected)
  • Droplet changes size based on how humid it is
• PM02 (corrected)

Notes

• The Adafruit requests library has issues with lots of requests after some time. The try except is intened to try to fix that.
• I could not get the matrixportal Network library to work with my Metro M4. I ended up using the example code to establish a connection. This also means the onboard NeoPixel doesn't show network status.
• The display only shows F.