Howdy - I'm going to be teaching three soldering classes in the near future. The first class will be through hole soldering, the next will be basic surface mount, the next more advanced surface mount. (and if anybody thinks this is the wrong way to divide it... let me know please!)
My students will obviously need something to solder.
I'm thinking about making a simple PCB with a knight rider circuit on it.
What other goofy little circuits can you come up with that would have enough cheap components for students to practice on and would be fun for them to have? And any way to combine all three circuits? (in other words - have all three classes produce separate circuits that function fine on their own, but also can interact with each other)
Maybe a theremin? That may be hard to debug though.