PID Retrofit KIT for Rancilio Silvia w/ pre-infusion [KIT-RSPb] - $199.50 : Auber Instruments, Inc., Temperature control solutions for home and industry
Rancilio Silvia Mega-Mod part 4 Brew and Steam Control - Schneor Design and More
Rancilio Silvia Mega-Mod part 1 Introduction - Schneor Design and More
CleverCoffee – Do it yourself PID for your Espresso Machine – Eine weitere WordPress-Website
PID Control Kit for Rancilio Silvia Espresso Machine 701098738195 | eBay
Rancilio Silvia Mega-Mod part 3 Pressure gauge - Schneor Design and More
DIY Rancilio Silvia wifi-enabled PID : r/espresso
How to build your own smart coffee machine | TechRadar
Rancilio Silvia PID + MPC via Raspberry Pi | by Danny Huang | Medium