A GPS unit and a Bluetooth-to-serial were tying up all the hardware UARTs on an AVR Arduino project ... IDs and assigns each a virtual serial port. While this was a hack born of necessity ...

That way I could pick the Arduino UART and mix it with the Hackaday PWM output module along with my own Verilog or VHDL. The way things are structured now you will have one bitstream that is ...