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@johndmcmaster.bsky.social

IC reverse engineering, #mtvre, CTO @LabsmoreLLC https://siliconprawn.org http://patreon.com/JohnDMcMaster

518 Followers  |  31 Following  |  184 Posts  |  Joined: 07.07.2023  |  2.1225

Latest posts by johndmcmaster.bsky.social on Bluesky

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Mingle, Wed, Oct 8, 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. No talks currently scheduled but there was some potential in

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

05.10.2025 19:11 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Mountain View Reverse Engineering (mtvre) meetup on Wed, 7:00 at Wagon Wheel BBQ. See you there!

05.10.2025 18:53 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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I'll be on the Maker Faire "How to do Hard Stuff in Your Garage" panel at 3:30, Foundry Stage. Hope to see you there!

28.09.2025 08:27 β€” πŸ‘ 10    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

pretty sweet stickers too!

18.09.2025 17:02 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Our chips look the best, no competition!

18.09.2025 10:48 β€” πŸ‘ 25    πŸ” 6    πŸ’¬ 3    πŸ“Œ 0
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Talks, tutorials, and mingle, Wed, Sep 10, 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: -Jacob C onβ€œUnlocking an Encrypted Zip” (30 min) -Eri

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

10.09.2025 21:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Mountain View Reverse Engineering (mtvre) meetup tonight 7 pm at Wagon Wheel BBQ! Talks:
-Jacob C onβ€œUnlocking an Encrypted Zip” (30 min)
-@tubetime.bsky.social on "Raspberry Pi reverse engineering" (30 min)

10.09.2025 21:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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McMaster JSM-6460LV needs a new home Above: main unit. Things covered in aluminum foil are not included (modern vacuum gauge, screen, and fiber laser). More pictures here State of the microscope / known issues: TLDR: generally works, al...

docs.google.com/document/d/1...

06.09.2025 19:09 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Hey all! Its unfortunately time to find a new home for my SEM. if you are interested take a look at this doc. TLDR: asking $2,250 OBO, pick up in Santa Clara CA. Other than that its best offer / whoever makes it easiest for me to move it on

06.09.2025 19:09 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Talks, tutorials, and mingle, Wed, Sep 10, 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: -Jacob C onβ€œUnlocking an Encrypted Zip” (30 min) -Eri

Details here: www.meetup.com/mountain-vie...

06.09.2025 16:53 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Mountain View Reverse Engineering (mtvre) meetup 7:00 this Wed at Wagon Wheel BBQ! Talks:
-Jacob C onβ€œUnlocking an Encrypted Zip” (30 min)
-TubeTime on "Raspberry Pi reverse engineering" (30 min)

06.09.2025 16:52 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I am extraordinarily disappointed with AWS / customer service who has been both difficult to reach and largely script based for something that requires intervention due to the bootstrapping issue. If anyone has any tips on how to expedite this process I would be very grateful!

28.08.2025 06:23 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1

I have been locked out of my labsmore.com accounts for the past week due to an expired credit card knocking out my DNS served with AWS route 53. I can't log into my AWS account to fix it since with DNS gone I can't receive a sign in code, or any other email for that matter

28.08.2025 06:23 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Maasi spin coater kit photoresist FOSS DIY semiconductor microfluidics | eBay Maasi spin coater. Mouthwash (photoresist analog to test / bring up system). Power cycling the unit fixes this. Our lab is working towards a Hacker Fab process that will likely include a 15 um process...

Want to support this project with your own professionally made Maasi? Get one here: bit.ly/get-maasi

27.08.2025 21:06 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Almost sold out of current Maasi spin coater inventory! Starting the next run to raise the current production from 14 to somewhere in the 20 to 24 range

27.08.2025 21:06 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

This short is a bit old. FWIW since then I have the system running smoothly (with a bunch of jerry-rigging). I'll try to do an update post soon!

24.08.2025 17:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
PVD (metal thin film) system sketchy power wiring
YouTube video by John McMaster PVD (metal thin film) system sketchy power wiring

www.youtube.com/shorts/Kk81T...

24.08.2025 17:44 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
Got a Polaron PVD evaporator
YouTube video by John McMaster Got a Polaron PVD evaporator

www.youtube.com/shorts/5fdnl...

18.08.2025 21:00 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Mingle, Wed, Aug 13, 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. Please support our hosts if you can by buying a drink or foo

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

13.08.2025 20:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Mountain View Reverse Engineering (mtvre) meetup TONIGHT, 7:00 at Wagon Wheel BBQ. See you there!

13.08.2025 20:24 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Pardon Our Interruption...

Want to support this project with your own professionally made Maasi? Get one here: bit.ly/get-maasi

12.08.2025 08:23 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Maasi spin coater polypropylene vase print on Creality K2+
YouTube video by John McMaster Maasi spin coater polypropylene vase print on Creality K2+

www.youtube.com/shorts/b6EKO...

12.08.2025 08:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Mingle, Wed, Aug 13, 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. Please support our hosts if you can by buying a drink or foo

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

10.08.2025 03:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Mountain View Reverse Engineering (mtvre) meetup this Wed, 7:00 at Wagon Wheel BBQ. See you then!

10.08.2025 03:37 β€” πŸ‘ 14    πŸ” 2    πŸ’¬ 2    πŸ“Œ 0

Thanks!

09.08.2025 03:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Get more from John McMaster on Patreon creating chip images, MTVRE meetups, and FOSS tools

Want to see how this was made? Get early access on Patreon!

www.patreon.com/c/JohnDMcMas...

09.08.2025 02:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Successfully printed a Maasi spin coater "vase" (fluid bucket) in polypropylene! This will ease concerns more aggressive solvents / photo-resists will dissolve conventional print materials

09.08.2025 02:51 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Yep! I might also reproduce Hayden's (WIP) simple transistor. Trying to get this approved to add to the repo

08.08.2025 23:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yeah although it would *just* be the MVP metal layer right now. So it would be more of an artistic submission or something like a metal resistor than a real device until we have diode / MOSFET working / reliable

08.08.2025 23:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Right now its made in inkscape, you can find the first test files here
github.com/JohnDMcMaste...

I think the ideal first run would be to submit SVG and/or PNG for each layer and then aim for a simple PDK / GDS for the second run. I'd ideally like two layers: gold and overglass cut out

08.08.2025 23:32 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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