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I don't know - that page won't load. If the ESC has a direction input then you need to control that with an IO pin. If no, then it's probably not possible.
– MajenkoJul 3 '15 at 20:19
R/C Hobby ESC's come in unidirectional (for aircraft) and bidirectional (for surface vehicles) versions. If you have the latter and configure the throttle ranges correctly, part of the PWM range will be reverse. But you may not be out of luck even with the former, as many ESC's are built in common ways around ATmega or SiLabs chips for which open source replacement firmwares have been published, and these typical have a bidirectional option.
– Chris StrattonJul 3 '15 at 20:50
If above link does not work it is the RS695 unit here. With same leads, maybe no. If you use a DPDT relay (double pile changeover) to swap 2 leads it will usually reverse direction.
– Russell McMahonJul 3 '15 at 21:12
Manual here - not helpful in this case, alas.
– Russell McMahonJul 3 '15 at 21:16
If you mean the FUFEI-12A, a web search shows several hits implying people have put the popular "simonk" firmware on that, and there are versions of that online which have been modified with reversing. So the goal seems achievable, the question is if it would be more expedient to just buy a small car ESC. I'd be very hesitant to use a relay, both given the currents involved and that the ESC may really, really dislike having the windings interchanged when it is even slightly active, so careful locking out will be required.
– Chris StrattonJul 5 '15 at 16:18