PIC12F675 Based Brushed Motor ESC

This brushed motor ESC is designed to be used for aircraft as it uses a Microchip PIC12F675 and a small number of components.

A number of interesting facilities are being offered by the PIC12F675 in this design that allows a much better ESC to be created, as it provides glitch filtering. It consists of internal 4MHz oscillator, two timers, A/D converter, comparator, and flash programmable. Some of the features offered by the ESC design include automatic low and high throttle setting, accurate software PWM, either hard or soft brake, slow start to protect gear boxes, programmable throttle response curves, low voltage cutoff, safety startup, signal loss stop, and variable rate PWM output to reduce noise at low speeds and increase efficiency at high speeds.

A software PWM engine that is machine generated by a Perl program is used by this ESC. Some of the constants that can be modified in the program include the main ESC module, linear PWM engine, power PWM engine, and car power PWM engine. The configuration of the PIC is shown using the 3 test circuits and the ESC in its intended configuration is shown by 2 production circuits.

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