The build relies on an Arduino Uno as the brains. It’s equipped with an L293D motor driver shield to run two DC gear motors which drive the walking assemblies.

Watch this video on YouTube. “Motor voltage: 24 VDC, 38 VDC (E-type). In my case, I used 12VDC power supply to the motor because this voltage level is compatible with L293D Motor Arduino Shield.

An UNO Shield that stacks onto Arduino boards (or Arduino-like boards such as Mbed) and provides an SPI interface to data packets that are sent or received using the EtherCAT protocol.