README.md

# Luftmeter
V1

* [test software](testfirmware/)
* [PCB](PCB/)



## ESP32
braaaaaaain...


## Sensors
* SCD30: CO2, rH, T
* HDC2080: rH, T
* MS563702BA03-50: barometer
* ...

## Interfaces
* USB-Interface: CP2102 - TTY over USB (CP210x driver)
* internal extension headers (SPI (for SDcard), I2C, )
* external expansion  (RJ45: 3V3, 5V, I2C)

## Misc
* Fan control: direct power PWM (5V, GND switched) or standard 4-pin PC-fan header
* RGB-LEDs (what else)