Rancilio Silvia PID upgrade
When I got my new espresso machine in 2015 I had quite some problems with the fluctuating temperature of the boiler. So I decided to replace the bimetal thermostat with a PID controller. I installed the controller in an external plastic box, so I didn’t have to cut any holes in the machine (just in case I want to sell the machine). Second modification was adding a cheap LED light source. ...