The nice detail regarding the Arduino board is that it can be cheap, plugs straight right into a computer's USB port, and it is actually not different to setup and use (in comparison to other improvement boards).
The good Arduino Uno must have these features:
An open supply structure. The benefit of it getting open resource is usually that it's a large local community of folks working with and troubleshooting it. This tends to make it quick to locate somebody that will help you debug your projects.
An simple USB interface . The chip on the board plugs straight into your USB port and registers with your computer to be a virtual serial port. This allows you to definitely interface with it as by way of it have been a serial machine. The good thing about this setup is that serial interaction is really an exceptionally easy (and time-tested) protocol, and USB makes connecting it to modern day computer systems seriously effortless.
Very convenient power administration and built-in voltage regulation. You could connect an exterior electricity source of approximately 12v and it'll control it to each 5v and 3.3v. Additionally, it is often driven immediately off of the USB port devoid of any external electrical power.
An easy-to-find, and dirt affordable, microcontroller "brain." The ATmega328 chip retails for approximately $2.88 on Digikey. It's many quantity of awesome components features like timers, PWM pins, external and inside interrupts, and various slumber modes. Look at out the formal datasheet for more particulars.
An ICSP connector for bypassing the USB port and interfacing the Arduino directly to be a serial machine. This port is important to re-bootload your chip if it corrupts and can now not speak to your computer.
An on-board LED attached to electronic pin 13 for fast an uncomplicated debugging of code.
And the last, but not least, a button to reset this system around the chip.
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