Linear actuators are an import hardware component for rovers and boats with uses including controlling steering mechanisms, vehicle height (aka active suspension), hatches and docking mechanisms. I would like AP to fund the purchase of a single actuator with feedback so that I can write a driver and then document (wiki, video) how they can be used with AP.
The driver would provide both rate and position control of the actuator.
The specific actuator I’m thinking of is this one from pololu.com. Pololu - Glideforce GF23-120512-3-65 High-Speed LD Linear Actuator with Feedback: 12kgf, 12" Stroke (11.8" Usable), 3.3"/s, 12V