An interface card that replicates the servo signal from a standard radio control receiver, and allows a 4QD controller to drive a sound card that requires a PWM control input, such as the ESS-dual from Sense Innovations.
These relay boards are designed to control 3 or 4 relays from one of our hand throttles. It has a number of "break points" on the circuit board that gives it a lot of flexibility to be used with [e.g. sound] systems that require isolated switch inputs.
To help track down wiring issues we've created this multi-purpose controller test board. It works by temporarily taking the place of the normal control wiring, and helps to identify and isolate problems.
A joystick (wig-wag) interface board for single-axis control. The joystick board transforms the speed control to give a centre-zero operation: Move the lever forward to go forward, moving the lever back selects reverse.