Our client is 2 years old. She has just got her first powered wheelchair, but it is too big to use in the home or at daycare.
Her family bought a ride-on toy car, similar to one her sibling uses. However, she cannot control the steering wheel and accelerator. The car came with a remote control, but she cannot operate the push buttons.
Tadvic was asked to convert the car to joystick control.
We found the simplest and cheapest way, was to interface a digital joystick to the remote, with the joystick switches (for forward, back, left and right) connected in parallel with the corresponding buttons on the remote. We also added a push button for the speed control on the remote (1,2,3, 1,2,3, etc) and an on/off switch in parallel with the button on the dash, which was out of reach.

The car with joystick connected to the remote.