Cool stuff. Much cooler than doing it with a scope and function generators!
I looked at galvos on eBay but I felt like I was cheating. I tried using mirror on a stepper motor shaft initially as a test but the scan rate was abysmal and it was a £3 stepper so it vibrated the bearings loose. Ended up widlerising it. I have a pile of DVD drives ready to be recycled though. They have the shafts, bearings, magnets and coils to make a galvo with. Plus some more lasers to play with. Current galvo ideas are based on:
I looked at galvos on eBay but I felt like I was cheating. I tried using mirror on a stepper motor shaft initially as a test but the scan rate was abysmal and it was a £3 stepper so it vibrated the bearings loose. Ended up widlerising it. I have a pile of DVD drives ready to be recycled though. They have the shafts, bearings, magnets and coils to make a galvo with. Plus some more lasers to play with. Current galvo ideas are based on:
http://elm-chan.org/works/vlp/report_e.html