By using a protocol called Inter-Integrated Circuit (I2C), the Wire ... and you can check out the full hardware requirements for all Arduino boards on the Wire Library Reference page.

The end result is you can have the circuit simulator on the left of the screen and a Web-based Arduino IDE on the right side. But how does it work beyond the simple demo? We wanted to find out.

Learning to build a robot arm will teach you how to breadboard a circuit, how to program your Arduino, and how to work ... one on your robot that has the full 180 degree motion.

By adding a little pressure to the car when you drive it up to the gate this completes a circuit instructing the Arduino that there’s a vehicle in position. You can see a demonstration ...

Individual LED lights are common in Arduino projects because they offer proof a circuit works. Soldering iron and solder ($9.95): A soldering iron is used to create new and permanent connections ...

Here is a useful circuit for Arduino lovers and experimenters. It is a simple digital voltmeter, which can safely measure input dc voltages in 0 to 30V range. The Arduino board can be powered from a ...

If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller that lights an LED to alert the user when it is time to water a potted ...