How to Get Started With Arduino View Instructable »
Hello! You mean you had buy an USB car charger and that you tried my project? Higher quality 9v cells can be more power full, so it can charger a bit more that a cheap one. But, its sur it can't charge up to 100% the battery on your phone. It can't charger a big tablette, eaven an Ipad mini can't be charge. My project is good to supply 5v with USB. Tank you!
Mini LED POVView Instructable »
Hi ! Yes i know we can buy a connector on ebay, but it was just to show pepole if they can't buy one online. Hope you understand! Tank you.
DIY 5v portable USB power supply View Instructable »