DIY-ed my Gaggia Classic PID Controller with an ESP32 and MAX8266 Thermocouple : r/gaggiaclassic
What Is a PID Controlled Espresso Machine?
PID Control Kit for Rancilio Silvia Espresso Machine, White LED 701098739574 | eBay
CoffeePID - a generic PID controller for coffee machines — 1024kilobyte
CoffeePID - a generic PID controller for coffee machines — 1024kilobyte
PID Retrofit KIT for Gaggia Classic Pro & Classic & Home PID Temperature Control Retrofit KIT for Rancilio Silvia Espresso Machine [KIT-GG] - $149.50 : Auber Instruments, Inc., Temperature control solutions for
Smart Heater Contoller for an ESPresso machine | LW Project Blog
What Is a PID Controlled Espresso Machine?
PID Espresso Coffee Machine Mod | Mechinations
DIY Rancilio Silvia wifi-enabled PID : r/espresso
Universal 1/16 DIN USB RS485 LCD PID Temperature Controller Ramp Soak UL Listed | eBay
The 8 best espresso machines for home baristas
Wi-Fi 1/16 DIN PID Temperature Controller (For SSR) [AW-SYL-2352] - $99.99 : Auber Instruments, Inc., Temperature control solutions for home and industry
PID Espresso Coffee Machine Mod | Mechinations
How to build your own smart coffee machine | TechRadar