All PSoC Application Notes

AN2084: Onboard Computer Unit - Electronic Speed Controller for R/C Car

Radio controlled model is one of the most rewarding hobby for every ages, The most favorite R/C model is the Electric R/C car powered by small DC motor. The 1:10 scale touring car can easily have top speed over 40 mph. In the old day the mechanical switch or variable wire wound resister controlled by normal R/C servo are used for throttle control. The problem is that they usually have very limited resolution and high power loss by the heat produced by the resister. Now most cars are fitted with a solid- state speed controller (ESC) which control the car speed by Pulse Width Modulation. The power lost is very little and the throttle response is significantly improved. The OCU-ESC is an ESC with one important features added, 1 Channel ABS The ABS will sense the car speed by an optical sensor and will release the brake if it found that the wheel is stop.