add compile time defined address
add simple write only interface to twi (avr i2c)
add simple regulator
add avrdude config
add temperature control
generate debug info
use int16 as temperature, fix negative temp print
add clock based on timer0
use clock to calculate delays
use 16 bit temperature
use pwm to control valves
use signed type
Regulate boiler on input temperature
Improve radiator target temperature calculation
Implement i and d parts of PID
use error to calculate d part
use desired room temperature to calculate radiator temperature
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Merge branch 'master' of https://github.com/gemtmp/firmware