I built an extremely small lightbulb flasher and describe the design process and challenges. This video is free for Patreon subscribers, and if I win the contest prize, I will donate the winnings to a STEM education charity. 2017 Flashing Light Prize: https://www.flashinglightprize.com/ Source of micro light bulbs: http://cir-kitconcepts.com/shop/ Single Schmitt inverter: https://www.digikey.com/product-detail/en/fairchild-on-semiconductor/NC7SV14L6X/NC7SV14L6XCT-ND/4744593 The SR416 cell is the smallest primary power source available: http://www.watchbatteries-usa.com/size.html Spot Welder: https://www.powerstream.com/spot-welder.htm Big thanks to Tektronix for very useful test gear. Much appreciated! Applied Science on Patreon: https://www.patreon.com/AppliedScience