This is a page of analogue interfaces for joysticks. Although these interfaces have been developed for use with 4QD`s controllers they will have plenty of other uses. Also because of the development history, we have printed circuit boards available (either fully populated and tested) or bare boards) for these interfaces. All of 4QD`s Motor Controllers require a speed input (typically 0-4 volts) and a separate direction input, so that is what these interfaces provide. Circuits are provided but as some of these are quite large, as links rather than as embedded GIFs. The index allows you to jump direct to the appropriate section.