Odigo is a highly versatile signal amplifier shield for Arduino Mega. It implements four low-noise, high-gain chopper stabilised operational amplifiers, which are optimised for low voltage signal generating sensors (e.g, photodiodes). It also consists of both high- and low-power output channels. These features make Odigo ideal for wireless measurement and feedback control projects that require high-precision, and low/high-power output channels for LEDs, motors, heating elements, etc.