To prevent damage to the USB port, the fuse will trip when the current to the port exceeds 500 mA. There is an ICSP (In-Circuit Serial Programming) header for the ATmega328 to optionally replace the bootloader.Īs an added precaution, the board comes with a resettable polyfuse on the USB connection path. The ATmega328P comes with the Arduino bootloader preloaded. Compatible with the Ethernet and Motor Controller Shields.Compatible with existing Arduino software libraries.ICSP header for programming microcontroller.Flexible power source (USB or DC power).Connects to a computer via a standard USB cable.8-bit AVR RISC-based microcontroller running at 16 MHz.Added Molex connector for easy connect to OSEPP™ sensors and other I2C devices.Ģ.95 x 2.13 x 0.61 inches (75.0 x 54.0 x 15.5 mm).Replaced USB-B connector with more popular mini-USB connector.This board uses the 8-bit, AVR, RISC-based ATmega328P microcontroller from Atmel. It serves as a great starting point to the wonderful world of Arduino. The OSEPP™ Uno R3 Plus board is the basic starter model. Production for the UN R3 has ceased as of June 2016.