Have a Raspberry Pi? Want to build a robot? Need to drive some engines? or thousands of LEDs? Then you will love the gertbot!
The gertbot is a HAT-board for the Raspberry Pi that adds four H-bridges, two open-drain N-MOSFETs that can handle some serious power. It is also possible to cascade up to four boards, giving you 16 H-bridges and 8 MOSFETs.
Built around a 64MHz Cortex M3 processor, it solves some of the short comings of a Linux based system – e.g. producing stable high-frequency PWMs in software. It also frees up the Raspberry Pi CPU to do other things such as running OpenCV to look around and make decisions.