Description All 23 IO pins leaded out. Classic ATmega8 minimum system, eliminating the hassle of soldering Crystal: The socket hole welding facilitate the buyer to replace the crystal, the default hair 8M crystal Power supply: ISP port or external pins, three channels of power supply on the pins. Reset: Power-on reset and reset button External expansion 4 led lights, convenient debugging Power LED (DS1) Standard ISP download interface, board do not need extra power supply, use directly ISP power. Tested by customer, can work with arduino IDE, uploading sketch is no problem Documentation: Schematic avaialble on this link.
