Building a Power Supply Kit with Collin
In this classic video Collin Cunningham describes power supplies and walking through building a dual linear regulated power supply from a kit.
Technology
Build a Basic IR Motion-Sensing Camera with Weekend Projects
Combine some common components and several pieces of software into one, and assemble this microcontroller-driven motion-sensing camera that records VGA resolution pictures to SD card.
Meet Elevated Element, a Husband and Wife Drone Team
Terry and Belinda Kilby are the duo behind Elevated Element, a project dedicated to drone aerial photography.
Review: SpareOne Emergency Mobile Phone
Call for help with this emergency GSM cellie, with or without your SIM card.
Tamiya 70097 Twin-Motor Gearbox
An ideal power plant for a sweet little roaming ’bot.
castAR Augmented Reality Opens Crowdfunding Campaign
castAR is a new crowdfunded augmented reality system built by Jeri Ellsworth and Rick Johnson.
DIY Hacks & How To’s: Proximity Sensors
Last week I showed how to use a pressure plate switch to activate special effects. This week, I am going to show you how to make a simple proximity sensor. This is basically just an infrared LED and a phototransistor. When a person stands near the sensor, some of the light from the LED is reflected back to the detector. The output signal of the detector can be monitored by an Arduino and used to activate special effects when the person is close enough.