I really enjoy making simple circuits and boxing them up as toys for my son. I'm an amateur radio operator, and he likes to "play radio" with the stuff I have made. So far, I've built a couple of 555 oscillators, including the toy organ circuit (that's his favorite), and other doo-dads with LEDs and switch matrices.
I want to do something new for him, but I've had trouble deciding on my next project. I'm leaning toward something along the lines of a voice changer (or something similar). I've seen a couple of voice changer schematics online, but I've had some rotten luck in the past with randomly selected circuits off the internet, so I'm not going that route this time.
I'm limited to +9V (or below) power options (e.g., nothing requiring dual supply voltages) and I'd like to stick to basic components (e.g., nothing requiring special ICs).
Any suggestions?
ETA: I'm not stuck on a voice changer. Other ideas are welcome, too.
I want to do something new for him, but I've had trouble deciding on my next project. I'm leaning toward something along the lines of a voice changer (or something similar). I've seen a couple of voice changer schematics online, but I've had some rotten luck in the past with randomly selected circuits off the internet, so I'm not going that route this time.
I'm limited to +9V (or below) power options (e.g., nothing requiring dual supply voltages) and I'd like to stick to basic components (e.g., nothing requiring special ICs).
Any suggestions?
ETA: I'm not stuck on a voice changer. Other ideas are welcome, too.
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