2 layers237.5 × 102.9 mm
Instruction
jes/scamp-cpu
A homebrew 16-bit CPU with a homebrew Unix-like-ish operating system.
112 parts301Unlicense
2 layers99.1 × 76.2 mm
Midimbox
indigoparadox/boxes_and_bots3This is a monorepo containing various hardware projects and their firmwares, as well as less-common or WIP drivers for common components
- Size
- 99.1 × 76.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 24
- Pads
- 65
- Tracks, vias
- 111, 0
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 17 Feb 2025
- Updated
- 14 Jun 2026
Overview
Midimbox is an open-source printed circuit board by indigoparadox, from the indigoparadox/boxes_and_bots repository on GitHub. It is a 2-layer board of 99.1 × 76.2 mm with 13 parts on 24 nets, routed with 111 tracks and 0 vias.
It is built around the 74LS00SC. Its parts include 5 resistors, 4 connectors, 2 ICs and 2 diodes. It belongs with the home automation and IoT and robots and motor control boards of this library.
Main components
1README
midimbox/hardware/README.mdmidimbox
Simple MIDI adaptor box designed to connect to PC gameport.
Notes:
- At present, output works, but input does not.
- TRS or DIN sockets may be used, but not both simultaneously.
Attributions:
- DIN-5 socket footprint taken from: http://smisioto.no-ip.org/elettronica/kicad/kicad-en.htm
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 220 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2, R4 |
| 2 | 4.7k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R5 |
| 2 | DIN-5 | AVConnectors:din-5 | J1, J2 |
| 2 | LED | LED_THT:LED_D5.0mm | D1, D2 |
| 1 | 6N138 | Package_DIP:DIP-8_W7.62mm_Socket | U1 |
| 1 | 74LS00 | Package_DIP:DIP-14_W7.62mm_Socket | U2 |
| 1 | AudioJack3 | Connector_Audio:Jack_3.5mm_CUI_SJ1-3525N_Horizontal | J3 |
| 1 | Conn_01x05 | Connector_JST:JST_EH_B5B-EH-A_1x05_P2.50mm_Vertical | J4 |
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Questions
How big is the Midimbox PCB?
It measures 99.1 × 76.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Midimbox use?
13 parts, built around the 74LS00SC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Midimbox KiCad files?
From the indigoparadox/boxes_and_bots repository on GitHub, at the commit this page was made from: the board is midimbox/hardware/midimbox.kicad_pcb and its schematic midimbox/hardware/midimbox.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Midimbox design in my own project?
Its repository states no licence, so its author keeps all rights: ask indigoparadox before reusing the design.