Giant resistor-shaped Ohmmeter

February 12, 2013 By 34 Comments

resistance-measuring-resistor

The fun of having a giant resistor-shaped Ohmmeter is that it reads back the resistance by displaying the color code. If you’re not too hot with decoding those bands there’s a helper band to the right which will display the value numerically.

All of the electronics are housed in the opaque part of the resistor, making for a nice low-profile … Read the rest

Filed Under: Microcontrollers Tagged With: , , , ,

Know your resistors… tell the time

January 15, 2010 By 32 Comments

[Darren] built a clock that uses a resistor to display the time. Well, it really uses a model of a resistor. This extremely tardy entry in the Hackaday design challenge houses all of the electronics on a PCB the size of a business card. Four RGB LEDs shine up through holes in the wooden base to light bands on … Read the rest

Filed Under: home hacks, led hacks Tagged With: , , , , , ,