Laser
1w blue laser diodes are fairly cheap. The driver circuits are pretty cheap, or I could build one. Need a heatsink. Some good modules for ~$10. I could probably put the whole thing together for $40.
1w blue laser diodes are fairly cheap. The driver circuits are pretty cheap, or I could build one. Need a heatsink. Some good modules for ~$10. I could probably put the whole thing together for $40.