Using a laser-cut frame, an ESP8266, and a servo motor, the T2 brews your tea for exactly the right amount of time. We were kind of hoping the robot would at least dunk the tea bag in and out, ...

He then swapped out the servo for a small stepper motor. ... A simple web page running on the ESP8266 even allows him to control volume over the network with his smartphone.

Motors with 30–60 RPM can be used for faster arm movements. The shoulder joint is turned into a servo motor by adding a potentiometer and a smartly designed 3D-printed cover, which allows easy ...