Home Built Coffee Roaster Build

This is an overview with demonstration of my homebuilt coffee roaster. It is a custom build based on a “Bake-a-Round“ pyrex tube. Power is from a 3400w plastic welding element and the blower is a 1hp unit from a jacuzzi tub. Control is by Arduino, using a max6675 thermocouple interface and a homebuilt zero cross detector circuit. Roasting software is Roastlogger