the situation: we have cat on medications , cat consumes medicated food strings nerf bullets. currently, have side table boxed in microchip controlled pet flap allows access cat requiring medication. trying modify flap move , down (both directions - in , out) without dragging on cat's , slamming shut. the plan: use cable or rope or string (etc.) , pulleys raise , lower flap motors. ultimately, when cat pushes on flap, raise, in direction she's pushing, it's vertical position horizontal position (90 degrees); remain in position specified amount of time, lower original position until push on flap starts process again. questions / concerns: is feasible? thought of using arduino uno motor shield, overkill? recommended motors? i've put couple different prototypes cardboard, string , pulleys; i'm stuck on capabilities of motors , programming. after scouring internet , finding bits , pieces of dream, i'm unsure if putting pieces going create havoc. questions,...