With the Arduino handling the data, the old LCD still needed a -5 V supply for contrast and an RC filter to smooth out the PWM signal [Stephen] is using to adjust the viewing angle.

An Arduino Mega controls the hand with the aid of two PCA9685 PWM drivers. The physical hand itself is made out of 3D-printed PLA and nylon, painted gold for a more striking appearance.

Shift from Siemens and Schneider reflects concerns over industrial control system vulnerabilities, including computer worms like Stuxnet.

Arduino thermostat using touchscreen LCD. Contribute to andysaull/Thermostat development by creating an account on GitHub.