The most striking difference between the Elektor Uno R4 and the Arduino Uno R3 are the four extra pins on the “power” connector and its second USART. Yes, you read that right: the Elektor Uno R4 has two USARTs making debugging and program development so much easier! Furthermore the Elektor Uno R4 has a 4-bit port E, a second I²C port, a second SPI port (four SPI ports if you count the USARTs), two additional analogue inputs, an output for the Analogue Comparator, nine PWM channels, two extra 16-bit timers, an Output Compare Modulator (OCM) and thanks to its Peripheral Touch Controller (PTC) every I/O pin can now be used as touch-sensitive pin without the addition of external components. Finally, a unique ID lets you identify the board uniquely (duh).
A Boards Package (for Windows) with a new compiler and improved libraries allows for a seamless integration of the Elektor Uno R4 in the current Arduino IDE.
The Elektor Uno R4 is now in production and we are now taking preorders. Early birds get a 10% discount.
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