Mailight
Description
[](https://www.youtube.com/watch?v=k0oHYXkPr5Y) This is a case for a small gadget to put in your mailbox to light it up when you open to check for mail. This is useful since here in Sweden we only get a few hours of sun every day in winter, which means I usually have to check my mail in the dark. Parts needed: - 1x Sparkfun PRT-08808 prototype board - 2x 3mm x 12mm screw - 4x rechargeable AAA batteries - 1x resistor of 1M ohm - 1x resistor of 10-22 ohm (You'll want it to be around 60 mA to make sure it doesn't overheat) - 1x 100 mF capacitor - 1x through-hole 555 timer - Lots of wire - 1x NC magnetic switch (some stores get this reversed, you want the one that closes the circuit when not affected by an external magnet). I generally use Standex-Meder Electronics (MK04-1B90C-500W). Don't forget to get a flange if it's sold separately. - Some battery contacts such as Keystone Electronics AA ones. The AAA ones will probably work as well. They're pretty flexible. - 1x Computer M3 chassis screw. - Super glue. - 2x JST female connectors - 2x JST male contacts - 1x 1W Power LED - Heat shrink or isolating tape Tools needed: - A 3d printer (hur dur) - Screwdriver - Soldering equipment - Something to strip/cut wires with.
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