Eric Spitzfaden says, "I recently discovered a cellphone case makes an excellent carrying case for my first aid kit. It came with a laptop case that I ordered for work. I can clip it to my belt when I go for a bike ride, or a walk in the woods." Link.
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How-To Tuesday: Arduino 101 & the PING))) ultrasonic sensor
The PING))) ultrasonic sensor is a really easy way to measure distance with a micro-controller. All you have to do is hook up 3 wires and upload some code. These sensors are great for robots, alarm systems, or any...
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It's a great idea, make a few and keep one in your car and at the office.
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