It might also be possible that your ISP header of the 16u2 is flipped 180 degrees on some unofficial boards. You also need to solder the additional 4 pin header to access all 7 PB i/o pins. D7 has PWM ...

Posted in Arduino Hacks Tagged atmega, atmega16u2, ATMega2560, atmega328, bootloader, cdc, dfu, firmware 3D Printing Without Support November 30, 2014 by Brian Benchoff 12 Comments ...

The Arduino Mega's PWM pins are digital output pins located on D2 to D13 and D44 to D46, coming to a total of 15. While they function as normal digital pins that can switch a component either ...

Meanwhile, the Arduino Mega is getting the same USB chip along with an ATMega2560 processor with twice the memory. Right now only 128K is available, but that's a software limitation and they're ...

Features of the Arduino HeroCore board include : – It works with Arduino IDE (shows up as Mega) – It is compatible with ALL the sensors and breakout boards for UNO and Mega ...

Note: Some pins are not connected on a standard Arduino Uno R3 but still listed so you can use them if you had a custom board. It might also be possible that your ISP header of the 16u2 is flipped 180 ...

While newer Arduinos and Arduino compatibles ... Wouldn’t it be great is you could also use the ’16u2 on the Uno or Mega for some additional functionality to your Arduino sketch?