ChromatograDIY is a Gas Chromatograph I am building from scratch. I am using open-source firmware and software for electronic equipment control/data acquisition such as Arduino-based micro-controllers and OpenChrom software. I am documenting all the steps I take to achieve this on the blog ChromatograDIY. Parts manufactured are built at the non-profit makerspace TX/Rx Labs in Houston, where I am a member with a rented workspace.