Changed PWM output to phase and frequency correct because it allows the output to be continuously on or off.
Added support for a rotary encoder which at the moment adjusts the controller setpoint.
Storing the controller setpoint now as temperature as well as ADC value such that through the interface only the temperature is visible, the ADC value now being used internally only.
Added a decimal point to the temperature readout in the serial interface instead of giving back the value in degrees Celsius times 100.
Accepting decimal numbers now as controller setpoint input.
Improved the temperature to string conversion.