Squirrels have fuzzy tails.
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have a plug going from a cell phone...... The phone I am using is a Samsung Galaxy S4.
After a few seconds of playing with the buttons, the whole thing suddenly stopped responding. It seems as if unplugging the phone from the circuit works sometimes.As it stands, the circuit will work for a few seconds, and then lock up.
I understand that the 0.47uF capacitor is to filter out noise in the signal.
QuoteAfter a few seconds of playing with the buttons, the whole thing suddenly stopped responding. It seems as if unplugging the phone from the circuit works sometimes.As it stands, the circuit will work for a few seconds, and then lock up. If I had to guess, I would say the audio driver in the phone is shutting down, and not your circuit. I've seen modern electronics sense if a connector is unplugged or shorted and shut off. The phone probably senses something is not quite correct and shuts off the driver for protection. Try using a 20-30K resistor and see if that clears it up.
I don't think the phone is sensing that there are no headphones connected, because it has a headphone icon in the corner the entire time that it is plugged in.
At least we learn as we fail.