2 layers19.9 × 18.4 mm
2 layers77 × 25 mm
1-inch midi
JeremySCook/PCBs13Circuit boards designed by Jeremy Cook
- Size
- 77 × 25 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 32
- Nets
- 26
- Pads
- 94
- Tracks, vias
- 117, 5
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 13 Aug 2024
- Updated
- 5 Nov 2026
Overview
1-inch midi is an open-source printed circuit board by JeremySCook, from the JeremySCook/PCBs repository on GitHub, published under the MIT licence. It is a 2-layer board of 77 × 25 mm with 32 parts on 26 nets, routed with 117 tracks and 5 vias.
It is built around the ATTINY45V-10SH. Its parts include 10 resistors, 4 switches, 3 ICs, 2 connectors and 1 diode. It belongs with the audio and music boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
1-inch-MIDI/KiCad/README.mdKiCad Backup as of Aug 6th 2024
Parts
32| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | MountingHole_Pad | MountingHole:MountingHole_2.5mm_Pad_TopBottom | H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12 |
| 4 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R5, R6, R7 |
| 4 | SW_Push | Button_Switch_SMD:SW_SPST_EVPBF | SW1, SW2, SW3, SW4 |
| 2 | 220R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R4 |
| 2 | ~ | JCC:CR2032 | U2, U3 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10 |
| 1 | 10R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | 33R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 1 | ATtiny45V-10S | Package_SO:SOIC-8W_5.3x5.3mm_P1.27mm | U1 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | DIN-5_180degree | easyeda2kicad:CONN-TH_DIN-504-M10 | J1 |
| 1 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
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Questions
How big is the 1-inch midi PCB?
It measures 77 × 25 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 1-inch midi use?
32 parts, built around the ATTINY45V-10SH. 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 1-inch midi KiCad files?
From the JeremySCook/PCBs repository on GitHub, at the commit this page was made from: the board is 1-inch-MIDI/KiCad/1-inch-midi.kicad_pcb and its schematic 1-inch-MIDI/KiCad/1-inch-midi.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 1-inch midi design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).