Month: April 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 […]