One LED serves as a battery level indicator, one flashes yellow after moderate impacts and a third flashes red for severe blows. mc10 wasn't willing to share the exact hardware inside, but we know ...

Makers, hobbyists and Arduino enthusiasts searching ... project which is powered by a 9V battery. The finish spirit level and measure features an ultrasonic sensor for measuring the distance ...

A Swedish software engineer — Johan Kanflo — has made a wireless Arduino clone called AADuino, which is the size of an AA battery ... temperature sensors and an indicator LED.