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Bga in two layers

google·myelin-acorn-electron-hardware·bga_in_two_layers/pcb/bga_in_two_layers.kicad_pcb

Bga in two layers PCB layout, top view — open source board by google
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About the Bga in two layers PCB

Bga in two layers is an open source PCB design by google, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 25.4 × 35.6 mm, with 23 components from 10 distinct parts.

By type, the board carries 16 capacitors, 4 connectors and 3 resistors.

It belongs with the retro computing designs in this gallery.

From the project

Phillip Pearson's retro hardware projects for the Acorn Electron

An attempt to route a 10M04/10M08 BGA FPGA using only two copper layers. Unfortunately also a test to see how little grounding I can get away with! This should at least let me try to solder and bring up a 10M08 chip, and hopefully the crosstalk at 2MHz won't be so bad.

I'm using the free version of Intel's Quartus Prime software, programming in VHDL.

To program the design into the chip, I generate an .svf file from the Quartus Prime Programmer, then use OpenOCD and my J-Link or Bus Blaster to download it. See openocd.cfg for a working command set.

Bga in two layers, from the project README
From the project README

Bga in two layers bill of materials (BOM)

23 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
top
CON1
1
left
CON2
1
right
CON3
1
bottom
CON4
2
C49678
1u
C8, C9
6
C49678
100n
C10, C11, C12, C13, C14, C15
8
100n
C16, C17, C18, C19, C20, C21, C22, C23
1
C17414
10k
R1
1
C17513
10k
R2
1
C17630
1-10k
R3

Bga in two layers design files

The KiCad project lives in the google/myelin-acorn-electron-hardware repository on GitHub; these links point at the commit this page was built from.

Bga in two layers: common questions

How big is the Bga in two layers PCB?

The Bga in two layers measures 25.4 × 35.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bga in two layers?

23 components, from 10 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Bga in two layers design files?

From the google/myelin-acorn-electron-hardware repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Bga in two layers design in my own project?

Yes, under the terms of its Apache-2.0 license, which google chose for the repository.

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