Serial Monitor

[section63]

Hello,

Is there anyway i can use Arduino Serial Monitor to see what my miniATMegatron is doing?

Get the below error when i try:

HardwareSerial0.cpp.o (symbol from plugin): In function `Serial':

(.text+0x0): multiple definition of `__vector_18'

libraries\MinHardware\MinHardware.cpp.o (symbol from plugin).text+0x0): first defined here

[paulsoulsby]

Couple of questions:
What is the code you're adding to do the serial monitoring (Is it all using the Arduino in-built library?)
You'll need to add the jumper to the PCB so that it boots into Arduino mode rather than MIDI device mode.  The Serial Monitor won't recognize it when it is in MIDI device mode.  The positioning of the jumper is shown in the instructions.