4 layers56.5 × 96.5 mm
4 layers120 × 100 mm
Hello! This project contains the PCB files used to create the physical PCB for my undergraduate senior design capstone, the Automated Biosensor Printer (https://www.johndavidvillarreal.com/pages/projects/bio-printer/)
- Size
- 120 × 100 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 83
- Pads
- 221
- Tracks, vias
- 589, 45
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 23 Jun 2026
- Updated
- 23 Jun 2026
Overview
4Axis is an open-source printed circuit board by JohnDavidVill, from the JohnDavidVill/BioSensor_PCB repository on GitHub. It is a 4-layer board of 120 × 100 mm with 34 parts on 83 nets, routed with 589 tracks and 45 vias.
It is built around the CD74HCT125E. Its parts include 15 connectors, 5 capacitors and 4 ICs. It belongs with the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
1README
README.mdHello! This project contains the PCB files used to create the physical PCB for my undergraduate senior design capstone, the Automated Biosensor Printer (https://www.johndavidvillarreal.com/_pages/projects/bio-printer/)
Note: The files were originally created using Autodesk Eagle EDA; however, due to the discontinuation of Eagle, the files were transfered over to KiCAD. The KiCAD project files should still be usable, but it should be noted that the files have not been 100% verified to match the original functionality in Eagle.
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | CAP-PTH-SMALL-KIT_510 | C1, C6, C7, C8, C9 |
| 4 | CD74HCT125E | N14 | U1, U2, U3, U4 |
| 4 | PINHD-1X5/2MM | 1_05X2MM_16378166 | JP1, JP2, JP3, JP4 |
| 4 | TERM-BLK-3P | TERMBLK_508-3N_16378166 | J13, J15, J17, J19 |
| 4 | TERM-BLK-4P | TERMBLK_508-4N_16378166 | J12, J14, J16, J18 |
| 2 | 1X07_513 | J6, J7 | |
| 2 | 1X05_513 | J8, J10 | |
| 2 | 1X02_513 | J9, J11 | |
| 1 | dummyfp1 | UNK_HOLE_1 | |
| 1 | dummyfp3 | UNK_HOLE_3 | |
| 1 | dummyfp2 | UNK_HOLE_2 | |
| 1 | dummyfp0 | UNK_HOLE_0 | |
| 1 | 455-1750-1-ND | 1X03_513 | J1 |
| 1 | PINHD-1X5 | 1X05_16378166 | JP5 |
| 1 | TEENSY41 | TEENSY41 | U$2 |
Questions
How big is the 4Axis PCB?
It measures 120 × 100 mm and has 4 copper layers, 1.6 mm thick.
What parts does the 4Axis use?
34 parts, built around the CD74HCT125E. 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 4Axis KiCad files?
From the JohnDavidVill/BioSensor_PCB repository on GitHub, at the commit this page was made from: the board is 4-Axis PCB Project/4Axis.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the 4Axis design in my own project?
Its repository states no licence, so its author keeps all rights: ask JohnDavidVill before reusing the design.
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