HardLabs

Midimania

harrisonmg·midimania

Midimania PCB layout, top view — open source NXP board by harrisonmg

About the Midimania PCB

Midimania is an open source NXP PCB design by harrisonmg, published on GitHub. It is a 2-layer board measuring 101.4 × 65.8 mm, with 9 components from 3 distinct parts.

Its main chip is the Teensy3.2, from the NXP family.

It belongs with the audio designs in this gallery.

From the project

A custom MIDI controller using beatmania IIDX style switches

Everything fit in the plate beautifully. The faceplate only needed a little bit of post-processing with a file and some scotch brite.

The rotary potentiometer pins were longer than expected. I extended each slide potentiometer pin with the metal innard of a female pin header so that the PCB will sit parallel to the faceplate.

The PCBs look great. There's a few spots where the silkscreen wasn't printed. I knew the fab house would remove silkscreen on top of exposed copper, but it looks like they also remove silkscreen within a small radius around exposed copper. Also, some small lines on the…

Main components on the Midimania

Teensy3.2

Midimania bill of materials (BOM)

9 components, 3 distinct parts.

QtyPartRefs
1
Teensy3.2
U1
4
R_Potentiometer
RV1, RV2, RV3, RV4
4
R_Potentiometer
RV5, RV6, RV7, RV8

Midimania design files

The KiCad project lives in the harrisonmg/midimania repository on GitHub; these links point at the commit this page was built from.

Midimania: common questions

What microcontroller does the Midimania use?

The Midimania is built around the Teensy3.2, from the NXP family.

How big is the Midimania PCB?

The Midimania measures 101.4 × 65.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Midimania?

9 components, from 3 distinct parts. The full bill of materials is listed on this page.

Where can I download the Midimania design files?

From the harrisonmg/midimania repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Midimania design in my own project?

The repository has no license, so all rights stay with harrisonmg. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Midimania without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.

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