Ok, it’s my first attend to make an usb charger. The original idea was to have more than 1A at 5V. One limitation is the DC-DC buck converter, which can’t handle more than 3A. Here is the schematic: The bill of materials: 1x DC jack barrel 1x DC-DC buck converter (http://cgi.ebay.com/itm/200957000302) 1x Red LED 1x […]