Arduino MIDI Shield (with MIDI Through)

parts help
1

Name of the part
Arduino MIDI Shield (with In, Out and Through)

Previous work, similar parts
The Sparkfun MIDI Shield is similar, but is lacking the MIDI Through port and has a slightly different layout.

Top view
I measured the PCB, MIDI ports and pin holes and then created an SVG file from my measurements, but I was not able to figure out how to properly copy pinholes (some of them are dots, rather than holes):
Arduino MIDI Shield

Photos
Top / Bottom

image
image928×1022 336 KB
image
image969×1042 185 KB

Datasheet
There is no datasheet for this shield as far as I know.

Type
Breakout board, sub assembly, plug in module (A)

Footprint
Since it’s a shield for the Arduino Uno, it shares some of the dimensions, but it’s no the same footprint.

Any help would be highly appreciated.

2

It is easy enough to create a part from the jpg images available, but the part that is currently missing is what the bottom two rows of connectors do. I expect the second one is probably ground, and the bottom 6 are likely power of some kind (but 3.3V or 5V is a mystery.) The top row connects to the arduino pins (that can be seen from some of the jpegs.)

capture

this site has a partial schematic

which seems to indicate that power is probably 5V if that is indeed what is on the bottom 6 pins.

Peter

3

Here are the pin mapping of these 3 rows from left to right as seen on the top view:

                                                       P5                          P4
   --------------------------- --------------------------- ---------------------------
P6 | A5  A4  A3  A2  A1  A0  | | 13  12  11  10   9   8  | |  7   6   5   4   3   2  |
   --------------------------- --------------------------- ---------------------------
   --------------------------- --------------------------- ---------------------------
P7 | GND GND GND GND GND GND | | GND GND GND GND GND GND | | GND GND GND GND GND GND |
   --------------------------- --------------------------- ---------------------------
   ---------------------------                         P9                         P10
P8 | 5V  5V  5V  5V  5V  5V  |
   ---------------------------
4

This part should do what you want. You need to print the pcb footprint at 1:1 scale and compare it to a real board. Your svg wasn’t quite on 0.1in boundaries on the right three connectors and it didn’t match the position on the jpg so I set it to match the jpg which may not be correct.

edit: Replaced with the updated breadboard below added.

Arduino-midi-shield-through.fzpz (24.0 KB)

Peter

5

Thank you, that was incredibly helpful! I measured the exact positions of the MIDI ports again using a more precise tool and then fixed it in the SVG. I also replaced them with the MIDI ports that the Sparkfun part uses, but scaled up to match the dimensions of my MIDI ports (19.7mm x 15mm).
Do you see any issues with this?
Arduino-midi-shield-through_1_breadboard

6

Looks fine. The connectors don’t appear to have moved at all, so I assume their position was correct? I have added your svg in and replaced the part posted above with the new svg. There is one issue with your svg: the new parts need to be in group breadboard or they won’t export as an image

capture
capture1428×832 197 KB

configured with the connectors outside the group Fritzing will look fine but an exported image will look like this (with the connectors missing because they are outside group breadboard.

capture1
capture11380×746 134 KB

Peter

7

The positions have changed, but some of the positions were only off by like 0.01mm, so it’s hard to see.

Thank you for explaining the breadboard group issue and fixing it! :slight_smile: