There's now a Micropython experimental port for the Dabao, and they are looking for testers! Check it out: github.com/orgs/micropy...

MicroPython experimental port for the Dabao (Baochip-1x RISC-V) · micropython · Discussion #19580

Overview The Dabao is an awesome RISC-V eval board built around the Baochip-1x SoC, both created by @bunnie. @andrewleech and I have been working on a port for MicroPython building on @ArmstrongSub...

github.com

The big repo drop for the Defcon badge today! github.com/bunnie/dc34-... github.com/bunnie/dc34-... github.com/bunnie/dc34-... github.com/bunnie/dc34-... defcon.org/34b/ is also live, this is your main resource page for badge-related infos! See you in Vegas soon!

We're dropping two utility repos today that support the #defcon34 badge: github.com/bunnie/dc34-... and github.com/bunnie/dc34-... These are useful to have if you want to load a photo onto the badge, or hack on the BIO. Stay tuned for more!

GitHub - bunnie/dc34-image: Upload a custom image to your DC34 Badge

Upload a custom image to your DC34 Badge. Contribute to bunnie/dc34-image development by creating an account on GitHub.

github.com

Here's a nicely written article that discusses some of the new opportunities unlocked in security by open source hardware: cambridgeanalytica.org/digital-curi... We're looking forward to learning what flaws the DEFCON community discovers, and working with them to improve the state of the art!

The hardware hacker who built a chip you can literally see through—and Defcon just handed 27,000 to hackers

Andrew Bunnie Huang created a see-through security chip for Defcon 34 badges. 27,000 hackers now have one designed to be deliberately broken open.

cambridgeanalytica.org

We're really excited to have the Baochip-1x featured in this year's DEFCON conference badge. Read more at www.wired.com/story/defcon...! Hope to see you there.

The New Defcon Badges Pack a Unique Open Source Chip That Doubles as a Security Key

Created by legendary hardware hacker Andrew “bunnie” Huang, the badges for this year’s famed security conference aim to push the boundaries of security and transparency.

wired.com

A version of the BIO core has been taped out and will be on the @wafer.space run 2! Thanks to Deepak Sharda (twitter: x.com/deeempak / website: lut4.com) for doing the heavy lifting of porting a version of the Baochip BIO core to this process! Full design available at github.com/dpks2003/bio...

The Baochip-1x is IR-inspectable. But, how does one read chips, and what does it even mean? Here's a blog post put out by @bunnie.org that helps make sense of the Baochip-1x SRAM macros, and its implications for trusted boot: www.bunniestudios.com/blog/2026/on...

Baochip is proud to be an inaugural member of the Pavona consortium. It's a strong step towards making secure, open source silicon broadly available. We look forward to vigorously advocating for the interests of small, independent contributors like ourselves. Source code at github.com/pavona/pavona

GitHub - pavona/pavona: A library of modular, tapeout-proven, and secure-by-default open silicon blocks

A library of modular, tapeout-proven, and secure-by-default open silicon blocks - pavona/pavona

github.com

Attention C users: there's a new C-based SDK up for the Dabao, huge thanks to Armstrong Subero for pulling this together! github.com/armstrongsub...

GitHub - ArmstrongSubero/dabao-sdk: Bare metal C SDK for the Baochip-1x RISC-V SoC

Bare metal C SDK for the Baochip-1x RISC-V SoC . Contribute to ArmstrongSubero/dabao-sdk development by creating an account on GitHub.

github.com

New #HacksterCafe, ft. bunnie – whose @crowdsupply.bsky.social campaign for Dabao (powered by @baochip.com ) just wrapped! Making secure #hardware easy & open 👀 March 31, 10:30am PDT / 5:30pm UTC, on @hacksterio.bsky.social : ▶️ www.youtube.com/watch?v=dBod... ▶️ www.linkedin.com/events/74444...

Building Secure Hardware with Dabao, by bunnie // Hackster Café

YouTube video by Hackster.io, an Avnet community

youtube.com

One of my favorite features about the Baochip-1x is the BIO. I've just put out a post explaining the origin of the BIO, including a comparative study against the PIO and some examples of how to use it. www.crowdsupply.com/baochip/daba...

Read more about the back story behind Baochip on bunnie's blog: www.bunniestudios.com/blog/2026/ba...

Production tester for the dabao is ready! 100% of boards run through a test where every I/O is toggled, both buttons are pressed, serial ports tickled, and an initial OS image is loaded. Voltages and currents are also checked. The test checks for errors in soldering, and/or faulty components.

Interested in trying out a Baochip-1x? The 'dabao' evaluation board is now taking pre-orders on Crowd Supply: www.crowdsupply.com/baochip/dabao

Dabao Evaluation Board for Baochip-1x

A powerful new RISC-V microcontroller with mostly open RTL

crowdsupply.com

Here's what a socket looks like for chip scale packages. Each one is custom made for a given chip package. A couple samples of the 0.4mm pitch Baochip CSP devices are laid out on the lower rim of the socket for size reference.

Behold the graveyard of Baochips! Security testing is hard, after the chips are locked the only recourse is to desolder and replace them when a test goes wrong or an attack sensor is tripped. On the upside, I'm getting really good at reworking CSPs.

Wanted a Dabao but couldn't get one at #39C3? Sign up here to be notified when they are ready for sale: www.crowdsupply.com/baochip/dabao

Dabao Evaluation Board for Baochip-1x

A powerful new RISC-V microcontroller with mostly open RTL

crowdsupply.com

Missed our talk? If you want to learn about the OS or the chip, check out the recording at media.ccc.de/v/39c3-xous-...

Xous: A Pure-Rust Rethink of the Embedded Operating System

Xous is a message-passing microkernel implemented in pure Rust, targeting secure embedded applications. This talk covers three novel aspe...

media.ccc.de

one hour to our talk! cya there.

A reminder that tomorrow we'll be introducing Xous & Baochip at #39C3: fahrplan.events.ccc.de/congress/202... Day 2, 23:00 In hall 1!

[39c3] Xous: A Pure-Rust Rethink of the Embedded Operating System

The world is full of small, Internet-of-Things (IoT) gadgets running embedded operating systems. These devices generally fall into two categories: larger devices running a full operating system using ...

fahrplan.events.ccc.de

Woo hoo! just in time: tape & reel packaged Dabao for #39c3. They will be at the #fail0verflow assembly with @bunnie.org . Also come see our talk on Day 2 23:00 in Room 1: "Xous: A Pure-Rust Rethink of the Embedded Operating System", where bunnie & xobs will co-present on Xous running on Baochip!

The basic dev board is in! Meet the "Dabao", a simple breakout board for the Baochip-1x. If you're interested in one and will be at #39C3, come find @bunnie.org at the fail0verflow assembly. He'll have a limited number of Alpha-1 release boards to give away! Source at github.com/baochip/dabao

Nice to see someone has already tried IRIS on their Baochip sample: social.v.st/@cibomahto/1...

Matt Mets (@cibomahto@v.st)

Attached: 4 images If you get some electronics from a dude in a sketchy Amsterdam cafe, you might want to inspect it before trusting it- luckily he made that easy to do! Here are some IRIS-style back...

social.v.st

Apparently the previous discord link expired. Didn't even realize that they could expire... Here's a link that should have no expiration! discord.gg/yesbcPF9Xy

It's nice to be able to simulate your constant-time code and prove to yourself that you got it right. Pictured is a simulation of AES chaffing, where fake and real data are computed in a random order. The timing of fake->real and real->fake has to be identical in order to mask power side channels.

We've got a Discord now up and running. Come join if you have questions or need support! discord.gg/5SgHvcNB It's early days and we're still figuring out how to configure things, so thanks for your patience as we iron out the wrinkles!

Block diagram of the chip now up on the bao1x repo!

Backside IR image of the chip! The Baochip-1x is packaged specifically to enable you to verify that you've got the correct chip, and not a fake or a substitute part (see bunnie.org/iris for how). The final chip will have part numbering that overlaps the memory array on the lower third of the chip.

Closeup view of the back side of the chip itself!

CHIIIIIIPS!!! 12" wafer of CSP bumped chips, hot off the line (solder balls are face-up in this photo, with a couple die already removed for testing).