MidiMonger
About the MidiMonger PCB
MidiMonger is an open source STM32 PCB design by dchwebb, published on GitHub. It is a 2-layer board measuring 40 × 110 mm, with 56 components from 25 distinct parts.
Its main chip is the STM32F446RETx, from the STM32 family. Other key parts include the 6N137, TL074, LM1117-5.0, LM1117-3.3 and SN74HCT244. By type, the board carries 22 resistors, 16 capacitors, 7 ICs, 6 connectors, 3 diodes and 1 crystal.
It belongs with the audio designs in this gallery.
From the project
Eurorack MIDI interface supporting USB and serial MIDI. Based on ARM STM32F446 MCU.
MidiMonger is a Eurorack MIDI interface supporting USB and serial MIDI.
MIDI Monger is a configurable MIDI interface for controlling Eurorack modules from either USB MIDI or Serial MIDI (or both simultaneously). MidiMonger 2 adds support for USB host functionality allowing the use of USB MIDI controllers (and experimentally USB HID mice) to control Eurorack modules.
Main components on the MidiMonger
MidiMonger bill of materials (BOM)
56 components, 25 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F446RETx | LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | 6N137 | DIP-8_W8.89mm_SMDSocket_LongPads | U2 |
| 1 | TL074 | SOIC-14_N | U3 |
| 1 | LM1117-5.0 | SOT-223 | U4 |
| 1 | LM1117-3.3 | SOT-223 | U5 |
| 1 | SN74HCT244 | TSSOP-20_4.4x6.5mm_Pitch0.65mm | U6 |
| 1 | MAX5134 | TSSOP-16_4.4x5mm_Pitch0.65mm | U7 |
| 1 | Crystal | Crystal_SMD | Y1 |
| 1 | SWD_Header | SWD_header | J1 |
| 1 | Conn_01x09_Male | Socket_Strip_Straight_1x09_Pitch2.54mm | J2 |
| 3 | Conn_01x08_Male | Socket_Strip_Straight_1x08_Pitch2.54mm | J3, J4, J5 |
| 1 | Eurorack_10_pin_power | Eurorack_10_pin_header | J9 |
| 2 | 1N5819 | D_SOD-123 | D1, D2 |
| 1 | 1N4148W | D_SOD-123 | D3 |
| 1 | L | L_0805_HandSoldering | L1 |
| 7 | 100nF | C_0805_HandSoldering | C1, C4, C6, C7, C8, C16, C17 |
| 2 | 18pF | C_0805_HandSoldering | C2, C3 |
| 1 | 2.2uF | C_0805_HandSoldering | C5 |
| 1 | 10uF | CP_Elec_3x5.3 | C9 |
| 3 | 22uF | CP_Elec_5x5.3 | C10, C12, C13 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 47uF | CP_Elec_5x5.8 | C11, C14 |
| 1 | 220 | R_0805_HandSoldering | R1 |
| 5 | 10k | R_0805_HandSoldering | R2, R3, R4, R5, R6 |
| 4 | 2k | R_0805_HandSoldering | R7, R8, R9, R10 |
| 12 | 100 | R_0805_HandSoldering | R11, R12, R13, R14, R15, R16, R17, R18 +4 |
MidiMonger design files
The KiCad project lives in the dchwebb/MidiMonger repository on GitHub; these links point at the commit this page was built from.
MidiMonger: common questions
What microcontroller does the MidiMonger use?
The MidiMonger is built around the STM32F446RETx, from the STM32 family.
How big is the MidiMonger PCB?
The MidiMonger measures 40 × 110 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MidiMonger?
56 components, from 25 distinct parts. The full bill of materials is listed on this page.
Where can I download the MidiMonger design files?
From the dchwebb/MidiMonger repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the MidiMonger design in my own project?
The repository has no license, so all rights stay with dchwebb. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the MidiMonger without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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