It is a work of art. I am so proud of this project.
Features:
12 volts to 35 volts input.
Onboard dedicated PIC 16F876
on board 5 volt regulator for PIC, includes reverse polarity protection and a brief UPS.
3 LED's for ANY use. Red, yellow and green. Programmable to indicate any variety of useful information.
2 H-bridge motor controllers, 3A each, 6A surge
bootstrapping caps for each motor controller which enable very high switching speeds
Temperature Flag for each controller
Current sense for each controller
DIR, PWM and BRAKE feature for each controller
PWM pin tied to the CCP pins of the pic (the PIC16F876A has two Hardware PWM channels) for "set it and forget it" control of motors and multitasking
External reset via 5 pin header
External interrupt via 5 pin header tied to the B0 pin of the pic (ext. interrupt)
Serial communications (2 way) via 5 pin header, tied to the hardware UART of the PIC for more "set it and forget it" functionality and multitasking
firmware is updatable through a bootloader program and the serial port via 5 pin header.
"battery" voltage sense
on-board reset button
swappable oscillator socket
socket for PIC
screw terminals for power and for motors
heavy duty wiring
large 220 uF 50v capacitors for each motor channel to reduce transients
the possibilities are endless. All I need now are some heavy duty motors and a big enough bot to actually NEED this motor controller. but when that day comes, I will be glad I built this.
A test program I wrote to verify functionality of the motor controller
Motor_controller_test.bas written in MbasicPro
