A common hacker upgrade to an espresso machine is to improve stability and performance with a better temperature controller ... It runs on an Arduino MEGA 2560 PRO (or similar microcontroller ...

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An Arduino is a microcontroller — a single board designed to control something and perform ... an accelerometer for detecting ...

You can also see the USB mini-b connector which gives you access to the Arduino compatible ATmega328 microcontroller on the back. There is also a piezo buzzer for your alarm needs. The prototype ...