Hey, this one is really confusing me. I have an astable multivibrator using Q1 and Q2. Q3 controls the voltage to the capacitors so they charge equal and maintain the leds flashing at 50% Duty Cycle. This is for a metronome which flashes a red LED to indicate the 1/4 note beat (LED 1) and the a green LED to indicate the "and" beat (LED 2). Up to here it works fine, adjustable freq. with 50% D.C. but when I attach the speaker, it changes the Duty cycle or makes 1 LED flash and the other stay on contently. How can I connect my speaker to maintain a 50% cycle and hear a "CLICK" sound on every quarter note beat?
Any help would be awesome.
The resistor and cap values are slightly different then in the pic.
Any help would be awesome.
The resistor and cap values are slightly different then in the pic.