Well, the throttle is very easy to build. Just need: -an old stick grip (I use the grip of a old Genius F-23) -a box of a PC speaker (or a real box in metal is better) -a generic gamepad PS style (dual shock) -3 buttons simple -a HAT swtich (extracted from a old joystick) -2 potentiometers of 10KOM -1 ON OFF ON miniswitch -2 push and release miniswitch
First to all, the main potentiometer (SLIDER axis for the throttle) work by the F-23 genius joystick. The X,Y,throttle and rudder axis are from the Genius F-23
By my own experience, try to start with good tools, for example: a good tin solder, resin, etc. The gamepad´s eletronic board is very fragile, so take so much care and be patience
well some pics: (looks very dark but is because I paint everything with a matt black color)
CONECTION BETWEN THROTTLE POTENTIOMETER AND SLIDER AXIS