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Octa pmod

joshajohnson·ecp5-mini·breakouts/octa-pmod-horizontal-0.2/octa-pmod.kicad_pcb

Octa pmod PCB layout, top view — open source FPGA board by joshajohnson

About the Octa pmod PCB

Octa pmod is an open source FPGA PCB design by joshajohnson, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 89 × 63.8 mm, with 16 components from 3 distinct parts.

Its main chip is the S7 Mini, from the FPGA family.

From the project

ECP5 FPGA in an "S7 Mini" form factor

ECP5 Mini is a Lattice ECP5 FPGA in the Black Mesa Labs "S7 Mini" form factor.

r0.1 is depreciated. ~~hardware has been assembled with no major issues being found at time of writing. Requires more validation, particularly the HyperRAM, microSD, and signal integrity of IO.~~

r0.2 moves to 1v8 HyperRAM along with major IO changes to improve performance. Pinout is not compatiable with r0.1, but mechanically is identical. Projects utiliting the features of the board to be completed.

Octa pmod, from the project README
From the project README

Octa pmod bill of materials (BOM)

16 components, 3 distinct parts.

QtyPartRefs
8
PMOD
J1, J2, J7, J8, J9, J10, J15, J16
2
S7 Mini
J3, J4
6
PWR
J5, J6, J11, J12, J13, J14

Octa pmod design files

The KiCad project lives in the joshajohnson/ecp5-mini repository on GitHub; these links point at the commit this page was built from.

Octa pmod: common questions

What microcontroller does the Octa pmod use?

The Octa pmod is built around the S7 Mini, from the FPGA family.

How big is the Octa pmod PCB?

The Octa pmod measures 89 × 63.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Octa pmod?

16 components, from 3 distinct parts. The full bill of materials is listed on this page.

Where can I download the Octa pmod design files?

From the joshajohnson/ecp5-mini repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Octa pmod design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which joshajohnson chose for the repository.

Can I test firmware for the Octa pmod without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug FPGA firmware against it before you order a PCB.

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