I am trying to help my son build a simple beeper circuit as part of the signaling merit badge to send Morse code signals. I built one with an LED but he wants an audio circuit. I have a small 8ohm mini-speaker from Radio Shac, temporary contact button and power supply but nothing else.
If someone could point me to plans for something like this, it would be much appreciated. I've tried searching for plans on my own for well over an hour and either I'm not using the right search keywords or just don't know what I'm doing enough to ask the right question. Any help that anyone can provide would be much appreciated.
Thank you!
Rick
If someone could point me to plans for something like this, it would be much appreciated. I've tried searching for plans on my own for well over an hour and either I'm not using the right search keywords or just don't know what I'm doing enough to ask the right question. Any help that anyone can provide would be much appreciated.
Thank you!
Rick