Bluedemon_II
New member
The timer circuit generates a PWM signal that has a period of 20ms with a duration of .9 to 2.0 ms. This is an universal pwm signal to control servos. That circuit that I posted uses a variable pot to determine the pwm signal output. By moving the pot you would move the servo.
The problem:
The signal that I want to use has a 0-5v value. I want that circuit to reference the pwm signal output to the 0-5v output instead of a variable potentiometer. I think some one achieved this before. I will be using a boost signal output from a 0-30psi sensor. No vac reference. While in vacuum the vanes will be at their max closed position "Not fully closed but a preset using a welded stopper". When the car begins to develop boost, the signal while be go into the circuit, and this will in turn move a high performance servo to actuate the vanes. to a certain position.
Current issues: Mis calculation of servo travel could result in servo damage since it will try to go further past the maximum allowed open point and burn the motor. Measurements must be made to be very exact. This is not really a problem but a issue that must be considered and addressed with care.
Threads of interest on this route.
http://www.rcgroups.com/forums/showthread.php?t=1090355
http://forum.allaboutcircuits.com/showthread.php?t=19763
Thats all I have seen for now. This would be the most simplest way to go, no programing needed, just an input and an output.
The problem:
The signal that I want to use has a 0-5v value. I want that circuit to reference the pwm signal output to the 0-5v output instead of a variable potentiometer. I think some one achieved this before. I will be using a boost signal output from a 0-30psi sensor. No vac reference. While in vacuum the vanes will be at their max closed position "Not fully closed but a preset using a welded stopper". When the car begins to develop boost, the signal while be go into the circuit, and this will in turn move a high performance servo to actuate the vanes. to a certain position.
Current issues: Mis calculation of servo travel could result in servo damage since it will try to go further past the maximum allowed open point and burn the motor. Measurements must be made to be very exact. This is not really a problem but a issue that must be considered and addressed with care.
Threads of interest on this route.
http://www.rcgroups.com/forums/showthread.php?t=1090355
http://forum.allaboutcircuits.com/showthread.php?t=19763
Thats all I have seen for now. This would be the most simplest way to go, no programing needed, just an input and an output.