Frequently Asked Questions

Can I modify the code (software)?

Yes, you can. 

What is the best place to buy parts and components

I usually check first and if I’m happy with the price I get stuff from them. They have relatively low minimum order for free shipping.
There is also Some very exotic stuff is only available from them. They have quite high minimum order for free shipping so I don’t use them often.
There are few other companies of the same sort, but I have no experience with them.
In many cases eBay is better option if you want the stuff cheap and dont care how long it takes to be delivered.

Other online stores I use:

What is the voltage range for powering Arduino based devices

6-14V is recommended. You can go all the way up to 20V but the on-board voltage regulator might get really hot.