Fomu

by Sutajio Kosagi

An FPGA board that fits inside your USB port

View all updates Jun 07, 2019

Mass Production and Teardown

Mass Production has Started!

We went to China last week to help begin mass production (“MP”). Ordinarily you do a small prototype run, then check that the product coming off the line is good. We decided to speed up this process a bit by showing up to the factory line and having them run a single panel of Fomus in the morning, then running the factory test on them. If things went well, we’d green-light production and all of the boards would get assembled.

Fomu’s FPGA is a very small chip that is connected via an array of balls sitting underneath the chip. The best way to make sure those balls are correctly soldered is to use an X-ray machine, which a good SMT assembly shop will have access to. We took a few Fomus and put them in the X-ray to check their connection, and everything looked really good. And the pictures came out really well!

Remaining Tasks

While it’s true that the PCBs are finished now, we’re not quite done building Fomu. We still need to finish the plastic cases, and we still need to package it up and ship it to Crowd Supply in Portland. Also, Fomu will only come with a basic USB-DFU bootloader installed just like Tomu.

Now that the hardware is mostly finished, we can turn our attention to software and tooling. We’re still working on an advanced bootloader that presents itself as a USB disk drive, and we have a bunch of software and firmware tools we’re working on to help you get started quickly.

Fomu at Teardown

This month Fomu is once more returning to Portland to attend Teardown. If you’re in town, stop by and say hello!

As always, thanks for supporting us and backing Fomu!

– Sean “xobs” Cross


$31,869 raised

of $10,000 goal

318% Funded! Order Below

Product Choices

$5

Buy us a Beer!

Thanks for helping make Fomu a reality! You will be rewarded with good karma and regular backer updates.


$45

Fomu for One

An FPGA for your USB port! Includes one pre-flashed Fomu and a plastic case. The price will increase once the campaign is over, so back us today!


$69

For Me, For You, Fomu

Projects are better with a friend. Or maybe you want to have a spare. Either way, you will receive two pre-flashed Fomu boards with plastic cases. This low price will increase after the campaign finishes!


$249

Fomu Ten-pack

Ten of our pre-flashed Fomu boards with plastic cases, each designed to fit into a single USB Type-A port. Bring FPGA development with you wherever you go, and share your RISC-V projects with up to nine other people.


$1,999

Fomu 100-pack

This is a lot of USB FPGAs. Perfect for a hackfest, conference, large classroom, or for someone with many, many friends. You will receive 100 pre-flashed Fomu boards with plastic cases.


$99

Fomu EVT Board ( + Fomu for One)

An EVT board revision is used to validate the schematic is correct, and to help develop the software. This EVT board is what we'll use to develop the USB stack and to make sure we've got the power and other hardware parts wired up right. An EVT board revision is used to validate the schematic is correct, and to help develop the software. This EVT board is what we'll use to develop the USB stack and to make sure we've got the power and other hardware parts wired up right. Designed to mount onto a Raspberry Pi to upload a bitstream and debug the CPU. This is a limited-time production board, and won't be produced after the campaign ends! Backers who select "Fomu EVT Board" will also receive one Fomu production board when they ship by 2019-06-30.

Credits

Sutajio Kosagi

Sutajio Ko-usagi supports and produces open hardware products designed by bunnie and xobs.


Sean Cross

Tim Ansell

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