Elektor Uno R4: we're taking orders now
When a manufacturer releases a B version of an existing product the differences between the old and the new are usually small. Not so in the case of Atmel’s ATmega328P, the processor at the heart of the Arduino Uno R3. The B-type of this MCU has so many extra features that a new revision of the R3 is justified. Enter the Elektor Uno R4.