Eyeboard Electrooculography (EOG) System

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Note: Be sure to check out the Kickstarter campaign of the Eyeboard project. This is an inexpensive yet reliable human-computer interface that detects eye movements using electrooculography (EOG), a biomedical technique based on picking up signals from electrodes placed around the eyes. EOG interfaces let users who can’t manipulate a... Read more »

Hacking R/C Power Outlets

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Switching plug-in appliances from your computer or microcontroller isn’t difficult in theory, but doing it without turning your home into a potential deathtrap can be tricky. The safer way is to rely on remote control rather than wiring directly. Read more »

Coffee Table MAME Console

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By John Baichtal and Adam Wolf Do you remember those classic video game arcades filled with rattling quarters, 8-bit songs, and flashing lights? You can reclaim that excitement in your own living room with this Coffee Table MAME Console. In 1997, Italian software developer Nicola Salmoria released the first iteration... Read more »

Secret Garage Door Remote

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A garage door opener openly displayed inside your car can be an incentive to thieves. Documents from the glove compartment are likely to reveal your home address, and with the remote in hand a thief can help him- or herself to the contents of your garage, and (if it’s an... Read more »

The BeatBearing Tangible Rhythm Sequencer

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The BeatBearing is an exciting and intuitive way to make music. Move the balls on a grid, and you change the beat. Music sequencing couldn’t be simpler. Like countless other musicians, I use a computer to create beats and sequence them into mixes. Pointing and clicking with a mouse is... Read more »

Wearable Light Organ

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This simple, wearable circuit uses an operational amplifier (or “op-amp”) chip to convert sound into light. An LM324 op-amp and a transistor boost input from a mini condenser microphone to light a series of LEDs. Watch it blink to the beat of your favorite music. Check out more Weekend Projects. Read more »