Saturday, July 1, 2017

World's smallest lightbulb flasher? Flashing Light Prize 2017




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-detai...

The SR416 cell is the smallest primary power source available: http://www.watchbatteries-usa.com/siz...

Spot Welder: https://www.powerstream.com/spot-weld...

Big thanks to Tektronix for very useful test gear. Much appreciated!

Applied Science on Patreon: https://www.patreon.com/AppliedScience

3 comments:

  1. Nice Keithley SMU! Haven't seen that one before.

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    Replies
    1. Yeah, this thing is really cool! The Signal Path blog has a couple really good product review videos on this SMU.

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  2. There are smaller batteries, f.e. the Seiko MS412FE-FL26E which is 4.8mm x 1.2mm - available at DigiKey. It's rechargeable and probably wouldn't be a plug-in replacement for your circuit due to the different voltage/current. On the other hand it already has tabs, which would help out other builders that may not have a spot welder handy or who don't have experience welding onto lithium batteries.

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