Tell us about yourself!
I found these from the same dealer at Aliexpress..* 2pcs 5mm lead screw + 2pcs nut = $10 (http://goo.gl/sscpH4)* 10pcs 2mm to 5mm shaft coupler =$7.20 (http://goo.gl/bQZ8OO)
Digispark DIY: The smallest USB Arduino
Remote Controlled IKEA Death-Star Lamp
Well, I live in IKEAland (Sweden), so what can I say ;) ?! I've found some M5 and M6, but they are a bit too expensive at about $25/30cm. It seams like M8 is more or less the de-facto standard, but that is perhaps too thick? You can get them with different pitch angle.http://goo.gl/ZjvNxI
Looking great! I just got approval (!) from my wife to install two of these. Have one question though.. do you have the approx. length of the M3 rod you are using? I'm trying to find a lead screw that would fit.
Build an Arduino
Pocket laser engraver.