MIDI Out Schematic wrong?

[jberry]

Trying to get midi jacks working, and they arn't. Looking at the original Pedalino wiring, and the MIDI standard via sweetwater, I'm thinking the schematic may be wrong.

The MIDI Out standard I found is:

O….. Pin 1 (No Connection)
O……… Pin 4 (+5V DC Voltage)
O………… Pin 2 (Ground/Common)
O……… Pin 5 (MIDI Data – Hot)
O….. Pin 3 (No Connection)

And looking at the original Pedalino project wiring picture, I see that setup.

Looking at the PedalinoMini schematic, it seems like pin 4 and pin 5 may be swapped. PIN 5 is getting the +5v signal, and PIN 4 is getting the data from the ESP32. Also, I don't see a ground on PIN 2.

Could you review and see if you agree?

[jberry]

I followed https://learn.sparkfun.com/tutorials/midi-tutorial/hardware--electronic-implementation and flipped the pins as I thought were wrong above, and it did fix my issue. So it does appear the pins on the schematic are wrong

[alf45tar]

I think you are right. I will fix it shortly.

[alf45tar]

Fixed

Thanks @jberry

[prisme60]

I see that you only change Schematic_PedalinoMini_Sheet-1.svg but you should change
Schematic_PedalinoMini_Sheet-0.svg too.

[alf45tar]

Deleted Sheet-0 because Arduino Uno is not recomended anymore for USB MIDI.
Arduino Pro Micro is cheaper, much compact and don't need the MOCOLUFA firmware.