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Outsource to you - arduino/soldering/laser

Posted: Wed Aug 20, 2014 11:10 am
by dirtyharry2

I'm building a fairly complicated timing system for a dogsport, but it largely breaks down to a couple dozen laser tripwires.

This: is basically what I need. But they've been discontinued, and the adafruit ones are $20/per, which is exorbitant for what they are.

All I need is a <5mw laser diode/pointer, controlled by an arduino mega at TTL level, capable of having a rise/fall of <1ms. No fancy khz or mhz cycling.

A simple off-the-shelf laser pointer for $1.99 should work. And I should have been able to do it via a transistor and battery pack. But I've tried, and failed.

If someone's willing to do the work for me, I'll pay for supplies and time, or you can source it and we can do a per-piece price or whatever. I need 10 for starters.