This document discusses the development of an open source potentiostat/galvanostat called the Ardustat using an Arduino board. It aims to provide a low-cost and hackable alternative to commercial devices that cost $1000 or more per channel. The Ardustat has a wider current and potential range for a fraction of the price of commercial devices, and allows users to modify and improve the device. The document advocates for open source hardware as it allows students and researchers to define their own experiments rather than be constrained by inflexible commercial tools.