Hi, I've just purchased an Uno R3. I am trying to send MIDI to a MIDI synth keyboard. I'm using the sample MIDI code found at http://arduino.cc/en/Tutorial/Midi
My Uno is connected to my MacBook and I'm able to (for example) run the sample Pin 13 LED flash code without a problem. So, my environment looks to be correct.
I have wired up a MIDI plug according to the schematic and triple checked it's connections, including the 220 ohm resistor.
When I run the sketch, I just can't seem to have my synth detect any MIDI coming from the Arduino Uno. Silence.
There are a couple of symptoms that may or may not be related: 1) MIDI requires a baud of 31250; since the serial monitor doesn't allow me to check that rate, I can't seem to debug this. 2) When I output text using Serial.println, I still see unrecognized characters being sent to the serial monitor... even in a different sketch that matches the baud (for example 9600) in both the Sketch and the monitor and does nothing but the Serial.println. 3) When I'm using USB power, I see a flicker on the TX LED when I run the MIDI sketch which sends a constant stream of commands... but when I disconnect USB power and use a 9V battery, I get no such flicker. The MIDI sketch produces no sound regardless of the power source.
Does anyone have any advice on what my next steps should be? In a couple of days I have another Uno arriving in the mail that I could test in case I have a hardware issue, but it's SO difficult to wait!
Any advice would be greatly appreciated. -Pete