Build This Low Cost 1/2 H-Bridge

Information On The Pic Chip

Input Pins
Pin 1 If it goes low it does a rest (MCLR)
Pin 2 If low it only gives one half of the output to the motors
Pin 6 "VEX" receiver
Pin 7 commands and data from another microcontroller
Pin 33 clock data interrupt
Pin 11 + voltage
Pin 32 + voltage
Pin 12 ground
Pin 31 ground

If the transmitter was set in 2 3 mode, then the chip outputs would look like this.

Output Pins
Pin 34 P.W.M. when joystick 1 is left for motor 1
Pin 35 P.W.M. when joystick 1 is right
Pin 36 High when joystick 1 is left
Pin 37 P.W.M. when joystick 2 is up for motor 2
Pin 38 P.W.M. when joystick 2 is down
Pin 15 High when joystick 2 is up
Pin 16 P.W.M. when joystick 3 is up for motor 3
Pin 17 P.W.M. when joystick 3 is down
Pin 18 High when joystick 3 is up
Pin 23 P.W.M. when joystick 4 is left for motor 4
Pin 24 P.W.M. when joystick 4 is right
Pin 25 High when joystick 4 is left
Pin 26 P.W.M. when joystick 3 is up and top button 5 is press for motor 5
Pin 19 P.W.M. when joystick 3 is down and top button 5 is press
Pin 20 High when joystick 3 is up and top button 5 is press
Pin 21 P.W.M. when joystick 4 is left and top button 5 is press for motor 6
Pin 22 P.W.M. when joystick 4 is right and top button 5 is press
Pin 27 High when joystick 4 is left and top button 5 is press
Pin 28 P.W.M. when joystick 3 is up and bottom button 5 is press for motor 7
Pin 29 P.W.M. when joystick 3 is down and bottom button 5 is press
Pin 30 High when joystick 3 is up and bottom button 5 is press
Pin 8 P.W.M. when joystick 4 is left and bottom button 5 is press for motor 8
Pin 9 P.W.M. when joystick 4 is right and bottom button 5 is press
Pin 10 High when joystick 4 is left and bottom button 5 is press
Pin 14 Stays high when top button 6 is press; goes low when bottom button 6 is press
Pin 5 Tells other microcontroller it can send the next command
Pin 4 Goes high if a command error has been detected

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