Offered by Autodesk, Tinkercad is a free online platform you can use to build and test out your Arduino circuits. This way, you can start learning even without the components on hand.

[Lars] shows you how to get a perfect score on the first four levels of BIT.TRIP RUNNER by using an Arduino to time and send button presses. This is a pretty simple game that uses a couple of butto… ...

so tinkercad has circuit designand arduno now, a real arduino is $20, IDE is free, fritzing is free and does all the exact same layout stuff locally, you save your files and keep them forever.

My daughter likes buttons. She's learning letters. I was bored over winter break and had these parts laying around... so I built her a "Button Box" based around an Arduino. Open source, hackable ...

Like xn1ch1’s application, my push-button is connected to the Vcc rail, with a pull-down resistor to 0V. Xn1ch1’s framework stayed the same, with my adaptations limited to altering the states of three ...