Hi - this circuit sounds like it should do exactly what I need (variable frequency, variable duty cycle). Problem is, I've just got it hooked up on the prototype board and it's not behaving properly.
Should the LED be flashing at the rate of the PWM signal? Mine is either fully on or fully off, depending on the position of either of the variable resistors.
Should the LED be flashing at the rate of the PWM signal? Mine is either fully on or fully off, depending on the position of either of the variable resistors.