sparkfun / midi_shield

Midi shield product 9595, available from SparkFun Electronics

SparkFun MIDI Shield

SparkFun MIDI Shield (DEV-12898)

The MIDI Shield gives your Arduino access to the MIDI communication protocol, so you can control synthesizers, sequencers, and other musical devices.

Repository Contents

• /Firmware - Example Arduino .ino sketch
• /Hardware - All Eagle design files (.brd, .sch)
• /Production - Production panel files (.brd)

Documentation

• Hookup Guide - Basic hookup guide for the MIDI Shield.
• SparkFun Fritzing repo - Fritzing diagrams for SparkFun products.
• SparkFun 3D Model repo - 3D models of SparkFun products.
• SparkFun Graphical Datasheets -Graphical Datasheets for various SparkFun products.

Product Versions

• DEV-12898- Version 1.5. R3 compatible. Currently live.
• DEV-09595- Version 1.3. Retired.

Version History

• V_1.5 - GitHub snapshot at V_1.5.
• V_1.3 - GitHub snapshot at V_1.3

License Information

This product is open source!

Please review the LICENSE.md file for license information.

If you have any questions or concerns on licensing, please contact [email protected].

Distributed as-is; no warranty is given.

- Your friends at SparkFun.

midi_shield's Issues

vcc range needed in sch

version number correct?

I think standard protocol dictates that the version number should still be v15 even though we proto'd a v15 already, only because the live version of the product is v14. The version increment should stay v15 through however many rounds of proto we do in this case. Toni, can you confirm?

net labels need to all be flag style in sch

Change net labels on A0, A1, D2, D3, D4, D6, and D7 to flag style. Use the "PORT-RX" net labels of R2 as the model to emulate.

using soft serial on pins 8 and 9

hi, I'm using this code - https://github.com/sparkfun/MIDI_Shield/blob/master/Firmware/MIDI-sniffer/MIDI-sniffer.ino
but I get no messages on the serial monitor. I think this code is for the new version of the shield, but is there a way to use soft serial on pins 8 and 9 on this version (sparkfun DEV 09595)?

Verify/compile of MIDI-sniffer fails

When compiling on Aurdiuno IDE the error message "MIDI-sniffer:41:10: fatal error: MsTimer2.h: No such file or directory
#include <MsTimer2.h>"

I'm using Arduino 1.8.19

Where do I find MsTimer2.h?

lines separating parts in sch need to be on info layer

Question: how to make an arpeggio?

Hi, i have this shield and i would like to write some arpeggios, but i do not know how to handle it. Thanks!!

brd needs measurements on measures layer

Since there are connectors on this that can be flush mounted with a custom enclosure we should include measurements.

Text labels in sch for SJ1 and SJ2 are swapped

opto IC needs name and value on correct layers

needs to be fixed in package

U1 needs name and value in brd

Parts needing net lines drawn out one more grid space in sch

SJ4, SJ5, and SJ7 in sch need one more grid space of net connection to form a 90 degree turn into symbol. Use SJ6 as model to emulate.

Is this sketch only compatible with the SparkFun MIDI-shield?

I am not using the sparkfun MIDI shield but I have built a MIDI I/O circuit according to MIDI specs.

The MIDI I/O circuit works with no issues when receiving input from a sequencer and the output goes to a software synthesizer sound source. Here is a link to the I/O circuit I have built.

I have tested this circuit using the Arduino MIDI library (fortyseven effects) basic I/O and callback examples. No issues whatsoever.

The issue I am having with the MIDI-sniffer.ino sketch is that while the serial monitor seems to be reading all the MIDI data, the output seems to be getting "stuck". Notes sent from the sequencer will get stuck "on", and after I stop the sequencer, I hear a distinct echo/ feedback noise coming from the receiving sound source.

As a result, I have to reset the MIDI output (send note off / panic message) in my DAW to stop the noise from continuing and "unstick" things. Is this some kind of loopback?

Why do the basic I/O and callback examples provided in the Arduino MIDI library work but this sketch has issues? How can I work to resolve this issue? Any guidance or pointers is greatly appreciated.

90 degree trace under opto IC needs to be fixed

Standoff holes in brd?

Should we include them for use in an enclosure?

gnd and vcc jumpers in sch need function labels