OpenXC is a very cool initiative involving Ford Motor Company and Bug Labs aimed at creating an open development ecosystem for interfacing with in-car electronics. Looks like a pretty great project.
OpenXC Switec X25-based “Retro Gauge”
One of the OpenXC projects featured on their website is a retro gauge based around Switec X25 type micro-steppers.
They have published Eagle schematics for a gorgeous little combination analog/digital instrument gauge. Their in-gauge PCB cleverly incorporates an Arduino Pro Mini. They have also published STL files for a 3D-printable housing.
This all looks very slick to me.
Their firmware uses our very own Switec X25 library.
You can find detailed documentation and resources at their github repository.