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LED display with TM1637 Driver

Example code: demo-display-max7219/src/main.rs

BMP280 Pressure and Temperature sensor

TODO:

  • communication did not work until CS pin was used (connecting CS to GND with a resistor did not work)
  • display did not correctly initialize on pewer up until there was 200ms delay before initializing (100ms was not enough), this may be a power issue