Anyway, looking forward to seeing your Theremin thingy
I guess i’ll have to make it work some day, in the meantime if you’re interested, here is my last ‘theremin’ project that works with IR instead of induction:
It’s actually pretty easy to build, i made mine with a function generator IC. All you need to do really is to create a function generator circuit, then instead of using a potentiometer you instead use a IR Phototransistor. This phototransistor has a filter so it basically just picks up IR light. Now you only need an IR LED to emit light that your hand can reflect it and send it to the IR phototransistor which then changes the resistency just like if you turned a potentiometer.
It also contains an echo/delay circuit made from the PT2399 chip.
It’s true that there’s a lot of crap being made in China, but they make just about everything, so what can we expect when they sell radios for 2 dollars included shipping and are still able to make money out of it?
I’ve have quite often been surprised the other way around actually, that i got something better than i expected. Those 2 dollar radios didn’t impress me much though, but i still have a hard time to understand how the hell they can make money from selling me this crap…
If i bought only the variable capacitor in Norway, that is a single part of the radio, then it would have costed me more than the whole Radio from China.