‰  NOW 13 WPM  ‰   TEXT IS FROM JANUARY 2014 QST PAGE 44  ‰

YOUR PC AS A COM PORT.  THE SOFTWARE THE PIC MICROCONTROLLER PROGRAM,
INCLUDED IN THE SUPPLEMENTARY DOCUMENTATION ON THE QST IN DEPTH WEB PAGE,
IS WRITTEN IN THE C PROGRAMMING LANGUAGE.  POSITION SWITCHES ALLOW YOU TO
MANUALLY POSITION THE ROTATOR MOTORS.  A CALIBRATION CAL BUTTON SWITCH
ALLOWS YOU TO MAKE ADJUSTMENTS IN THE FIRMWARE IF THE SYSTEM GETS OUT OF
CALIBRATION.  YOU SET THE ROTATOR TO 0 DEGREES AZ AND 0 DEGREES EL, PRESS
THE CAL BUTTON, AND THAT LOCATION IS STORED IN THE PIC MICROCONTROLLER
ƒ  QST DE W1AW  ‰
PROGRAM.  THEN, SET THE ROTATOR TO 359 DEGREES AZ AND 90 DEGREES EL, PRESS
THE CAL BUTTON TO STORE THE OTHER STOP POSITION IN THE PIC PROGRAM.  THE
MOTORS ARE CONTROLLED THROUGH THE INDIVIDUAL H BRIDGE CIRCUITS USING A
PULSE WIDTH MODULATION PWM PRODUCED BY THE PIC MICROCONTROLLER TO SET THE
MOTOR SPEED.  IF YOU FIND THAT THE MOTOR PERFORMANCE IS NOT TO YOUR LIKING,
YOU CAN MAKE CHANGES TO THE SOFTWARE TO CHANGE THE PWM CHARACTERISTICS.  
‰  END OF 13 WPM TEXT  ‰  QST DE W1AW  ƒ