LED Poi AG3/LR41/SR41

thingiverse

Tried and tested: a tried-and-true approach for anyone who wants to try it themselves. Specifically designed with three AG3 batteries in mind, which can be found cheaply on Ebay, and a single 5mm LED. 100 of these affordable AG3 batteries costs $4 shipped:http://www.ebay.com/itm/Wholesale-100pcs-AG3-LR41-SR41-392-196-Alkaline-Button-Cell-Coin-Battery-/291376606158?pt=LH_DefaultDomain_0&hash=item43d7662bce Additionally, 100 of these small LEDs costs just $1.31 shipped:http://www.ebay.com/itm/Lot-Of-100-Pcs-5mm-Round-Blue-LED-Super-Bright-Bulb-Panel-Board-Lamp-Light-/261752989837?pt=LH_DefaultDomain_0&hash=item3cf1b1a88d Each of these items includes two units, as it's often more fun to spin multiple lights at once rather than just one. Spinning isn't my strongest skill yet. Battery life is remarkably long, with a duration of over eight hours at maximum brightness and two days of light production at reduced illumination. One area that still needs attention is the LED component itself - it requires drilling to accommodate its installation (any standard drill bit will do), but tolerance measurements are currently unknown. Instructions for building this project are straightforward: Drill a 5mm hole in preparation, attach three AG3 batteries using adhesive tape, shape one LED into a straight line and reverse-insert it into the drilled hole with the leads bent outward, press-fit the LED and the 3 batteries into place, securing the LED. Pass string through the holes, and your electronic poi are ready to spin.