GitHub - JohnDMcMaster/ez-bake-lithography: Low cost silicon lithography machine Low cost silicon lithography machine. Contribute to JohnDMcMaster/ez-bake-lithography development by creating an account on GitHub.

Files here: github.com/JohnDMcMaste...

YouTube video by John McMaster ez bake lithography

www.youtube.com/shorts/5lUxa...

RoboCon @SBC · Luma RobotCon by PrismaX is a gathering of the world’s most visionary minds in robotics, AI, crypto, and frontier technology. The inaugural edition of RobotCon is…

Event link: lu.ma/ifjw3t6x?tk=...

Special thanks to the greater Ethereum community for providing seed funding for this project! Also thanks to Ethereum House and the robotics floor for hosting us this week at the tower

(also come find out how these gold wafers were patterned!)

Want to learn about DIY / FOSS silicon fabrication? Check out FOSSF Silicon at Frontier Tower today to see an open source hardware toolchain! We'll be running live demos exposing and developing wafers

YouTube video by John McMaster hacker Fab lithography machine repair diagnostics

youtube.com/shorts/Rh3an...

Don't mind me, just grabbing coffee with my lithography machine

This is just a photoresist test. Real devices once this is working a bit better

Anyone recognize this?

A few more photoresist tests. Note these are all way bigger than the "normal" device they represent. Ex: Intel 4003 metal pattern on a 2" wafer

Unfortunately the Hacker Fab stepper got knocked over at Open Sauce and requires repairs that may be in the $200 to $2000 range. If you like supporting this type of open research please consider joining my Patreon :) patreon.com/c/JohnDMcMas...

Halfway decent result doing large feature lithography with laser printer transparency

Regrouping from open sauce! Hoping to have some more labs / material out soon :)

Also spied a Backyard Scientist around the same time although I'm too shy to say hi / break the ice :P But hopefully some day he can bring some Florida man energy to chip decapping

My favorite awkward youtuber interaction though was when FOSSF Silicon member Randy gave CodysLab a wafer while trudging along in his spacesuit

Also finally got to talk @breakingtaps.com in person (we kept missing each other last year!). Thanks to them and Applied Science for contributing photoresist to run stepper exposures

Also great chatting with @strangeparts.com ! Thanks for the shout out on main stage :) Happy to chat to anyone that wants to learn more about silicon

YouTube video by Level 2 Jeff Open Sauce 2025 vlog: Day 1 (People, Projects, Pee-Board)

Great chatting with @jeffgeerling.com ! Thanks for the shout out in your video www.youtube.com/watch?v=95Ec...

Loved seeing everyone and all the fun projects! Among them I was wondering if this fellow could roll up our exhibit in the Katamari so we didn't have to clean up

Great seeing everyone at Open Sauce! If you're interested to contribute to FOSS silicon manufacturing by testing tools exhibited here (Maasi spin coater, Hacker Fab stepper, etc) please reach out!

Come find us at open sauce to get commemorative wafers!!

I'll be around in the afternoon. Stop by and spin coat a wafer as a souvenir!

Check out FOSSF Silicon at Open Sauce this weekend! We're showing off the FOSS semiconductor design + fabrication ecosystem including a Hacker Fab stepper, tube furnace, Maasi spin coater, prototype devices, and much more! Booth C.18

A large picture frame containing a circuit board, about 15 in x 12 in, completely covered with hundreds of LEDs and thousands of transistors!

come see me at Open Sauce this weekend in San Mateo! i will have the MOnSter 6502 on display! this is the world's largest 6502 microprocessor, built out of discrete transistors.

it will be set up at CuriousMarc's booth.

Oh it mostly worked. I loosely saw the Open Sauce logo by try 3. But it takes some tuning to get the exposure time + developer tuned. Ex: I did three runs where 1) I over exposed + obliterated it in developer it 2) I still over developed it 3) I under exposed it (and should have done a time series)

Tried to pattern a wafer today with a Hacker Fab stepper. Didn't quite work but hopefully I'll have another go before open sauce

Open Sauce 2025 - Open Sauce A Celebration Of Makers And Creators. A three-day event in San Francisco Bay Area at San Mateo County Event Center. Attendees will explore...

I'll be at OpenSauce 2025 along with @curiousmarc.bsky.social, @tubetime.bsky.social, and Mike. We plan to show some Apollo hardware, atomic clocks, vintage avionics, and who knows what else, so stop by if you're attending.

opensauce.com

Talks and mingle, Wed, Jul 9, 2025, 7:00 PM | Meetup The main event starts at 7:00 at Wagon Wheel BBQ in Mountain View. We have the room reserved starting at 6:30. Talks: -Adam on: “Behind the Badge: How we used and abused h

www.meetup.com/mountain-vie...

Mountain View Reverse Engineering (mtvre) tonight 7 PM at Wagon Wheel BBQ. Talks:
-Adam on: “Behind the Badge: How we used and abused hardware to make the 2024/2025 Aerospace Village Badge” (40 min)
-Possibly a second one

Default 0.4 mm nozzle jammed using RepRapper brand filament on my Creality K2 Plus. Filament quality issue? Otherwise the print looked decent enough up until that. Thinking of trying other filaments and/or larger nozzle