Craft & Design
Make a cheap perpetual calendar

3152681223 6138F126E5 B
3152682041 3B1A36Dff4 B
Evil Mad Scientist Laboratories – Cheap Perpetual Calendar

A quick, handy, geeky, and seriously inexpensive perpetual calendar for your desk.
Got 12 cents and a scrap of cardboard? You’re good to go!

Cut twelve slits, stick in your pennies, and… here it is, all built…


current: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600...

View more articles by Phillip Torrone