Year: 2010

John Park in the Maker Shed: PIR Arduino motion alarm

John Park in the Maker Shed: PIR Arduino motion alarm

Want to learn how to hook up a passive infrared (PIR) sensor to your Arduino? Check out this video I put together doing just that. These sensors are very nice to work with either by themselves (along with a transistor or relay) or on a microcontroller. You get about a 20 ft. range for detecting motion from humans, animals, other things that emit a decent amount of infrared radiation. WILL NOT DETECT THE UNDEAD

Use simple components to make a pitch sequencer

Use simple components to make a pitch sequencer

Australian chiptunes wizard Sebastian Tomczak built this DIY 8-Step Waveform Editor using just a few integrated circuits (ICs) and slider potentiometers. Each slider represents the amplitude of a waveform at one step of its cycle, and since there are eight sliders, there are eight positions in the waveform. So, how does it work? The waveform […]

Lichen Embroidery

I love lichen. And I find it interesting that lichen is not a single, united being. It’s a composite organism: A symbiotic relationship between fungi and algae. Lichen colors range from sophisticated, muted greens and browns to eye-opening rusty oranges. And the forms and textures in which they manifest are often breathtaking. I still think […]