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4 layers95.3 × 157.1 mmBackplane, the printed circuit board in 3D

This is not the first or last attempt at making open source electron microscopy a reality. Many others have attempted this large and difficult task before with varying specialties and contributions.

Size
95.3 × 157.1 mm
Copper layers
4
Thickness
1.6 mm
Parts
14
Nets
164
Pads
2,324
Tracks, vias
4,669, 0
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
20 Jan 2025
Updated
15 Feb 2026

Overview

Backplane is an open-source printed circuit board by AeroElectronics, from the AeroElectronics/Open-Source-Electron-Microscopy repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 4-layer board of 95.3 × 157.1 mm with 14 parts on 164 nets, routed with 4,669 tracks and 0 vias.

It is built around the PCIE-164-02-F-D-TH-TR.

Main components

1

README

README.md

Open Source Electron Microscopy

This is not the first or last attempt at making open source electron microscopy a reality. Many others have attempted this large and difficult task before with varying specialties and contributions. I have learned a great deal from other's work in this area and it is my hope that I can make a contribution too. It is through the collective effort and ability of the open source community that progress on such large and difficult tasks may be realized.

My work so far has focused on the control electronics which can be used to drive electron microscopes. This is an essential first step that can (mostly) preceed the design of the electron optics. I'm hoping that by lowering the barrier to entry, others can work on this exciting task.

Note to readers! This repo is quite new, many of the currently uploaded works are my most recent iterations (old designs have not been uploaded) and have not yet been tested. Please check the status page!

I've worked on a few areas, see the links below:

Backplane

Coil drivers

Resistor/Inductor Substitution board

Raster generator

Remember, this project is still under development. Use at your own risk. This work is licenced under CERN OHL V2 S. Please see license file.

Parts

14
QtyValueFootprintReferences
14PCIE-164-02-F-D-TH-TRLibrary:SAMTEC_PCIE-164-02-F-D-TH-TRJ1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14

Questions

How big is the Backplane PCB?

It measures 95.3 × 157.1 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Backplane use?

14 parts, built around the PCIE-164-02-F-D-TH-TR. 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 Backplane KiCad files?

From the AeroElectronics/Open-Source-Electron-Microscopy repository on GitHub, at the commit this page was made from: the board is Backplane/backplane/backplane.kicad_pcb and its schematic Backplane/backplane/backplane.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Backplane design in my own project?

Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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