Flux | Build working hardware with AI
@BuildWithFlux

The AI hardware engineer. One agent with the right models, tools and parts for each step. Start from an idea or your own files and build working hardware.

 San Francisco
flux.ai
Joined July 2020
730 Photos and videos
Today, we’re excited to share that Flux has raised $37M in new funding, including a $27M Series B led by @8VC, with participation from @BainCapVC, @Liquid2V, and @OutsidersFund. To the Flux community: we couldn’t have done this without you! Your projects and feedback shape what we build.
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Hardware is about to have its coding moment. Flux CEO @MatthiasWagner at SF Tech Week 🎙️ flux.ai/p/blog/matthias-wagn…
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Flux | Build working hardware with AI retweeted
Matthias
@MatthiasWagner
Oct 26
As someone who spends six figures a month benchmarking AI models for hardware engineering, I can tell you: there is no single best model! Every model has strengths and weaknesses. The best model for one task can be terrible at another. This is why harnesses like Devin for coding and Flux for hardware are so powerful. They orchestrate multiple models, routing each task to whichever model is best suited for it. If you’re exclusively using Claude Code, Codex, or any single model, you’re not experiencing the cutting edge of AI. I think domain-specific harnesses are where the real breakthroughs will happen. Systems that deeply understand the problems they’re solving and know how to get the most out of whatever models and tools are available.
i²cjak
@i2cjak
Oct 26
OpenAI has the best model for electronics rn, im using Sol 6.1 all of the time in Backplane
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Catch parts with no datasheet before fab. Flux review now lists every part in your design that needs a datasheet but does not have one. IoT builders can check that each sensor and radio on a smart home board has its datasheet before they order.
Flux Review panel listing parts with a missing datasheet: an e-paper module and a connector.

ALT Flux Review panel listing parts with a missing datasheet: an e-paper module and a connector.

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Mechanical design in Flux is getting serious.
Matthias
@MatthiasWagner
Oct 22
Soap dispenser created with Flux just playing with perfect human curvatures in mCAD models Pretty cool what you can just prompt now in a few seconds
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Orbit the 3D view around any point. Press and drag in the Flux 3D view, and the camera now orbits around the spot under your cursor. Drone builders can circle one motor connector on a flight controller without the board swinging out of view.
Flux 3D view of a quadcopter frame board, orbiting around a motor connector under the cursor.

ALT Flux 3D view of a quadcopter frame board, orbiting around a motor connector under the cursor.
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Zoom and pan any diagram in fullscreen. Open an image, SVG, chart or diagram from the Flux chat in fullscreen, and you can now zoom in and drag it around. Any builder can read the small labels on a block diagram or pinout without leaving the chat.
Fullscreen preview of a GNSS receiver block diagram in the Flux chat, with zoom controls.

ALT Fullscreen preview of a GNSS receiver block diagram in the Flux chat, with zoom controls.
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Editing a part is the hardest first job in CAD. Now you just ask. Bring a STEP, IGES or BREP file into Flux and say what to change. Flux edits it, keeps the holes in place, and saves a new STEP file. Taller power supply? Ask for a deeper flange with vent slots.
Before and after views of a sheet metal power supply bracket in Flux. After the edit, the flange is deeper and has five vent slots.

ALT Before and after views of a sheet metal power supply bracket in Flux. After the edit, the flange is deeper and has five vent slots.
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Last week we hosted the SF Hardware Meetup at Flux HQ for #SFTechWeek. This is everything that happened 🎥 Thanks to @michaelraspuzzi for organizing, @ngpadgett and to @mantle3d, @saba_khalilnaji and @fjeg1987 for speaking.
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Bring your IGES and BREP models into Flux. Flux now accepts IGES and BREP files as 3D models, the same way it takes STEP. Robotics builders can upload a gripper or chassis part from their CAD tool without converting it first.
Bring your IGES and BREP models into Flux. A 3D render of a white robotic gripper with an exposed control board, mounted on a robot arm.

ALT Bring your IGES and BREP models into Flux. A 3D render of a white robotic gripper with an exposed control board, mounted on a robot arm.
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Design an entire multi-board device in one Flux project. Flux plans the architecture, designs PCBs in parallel, then assembles them in 3D to check fit between boards and inside the enclosure. All before routing a trace. Think drones with separate flight controllers, ESCs, and radios. One project. Multiple boards. One AI hardware engineer.
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Flux | Build working hardware with AI retweeted
Matthias
@MatthiasWagner
Oct 9
Packed house last night...thank you all for coming!
Flux | Build working hardware with AI
@BuildWithFlux
Oct 7
Tomorrow night we're hosting the 138th SF Hardware Meetup at Flux HQ, part of SF Tech Week. Talks, Q&A and an open mic on supply chain and the future of manufacturing. Thu, Oct 8 · 6:30–9:30 PM
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Flux | Build working hardware with AI retweeted
Aman Kumar
@amankrsingh03
Oct 9
First event in SF had to be a hardware one. Had a great time at the SF Hardware meetup hosted by @BuildWithFlux. Thanks @michaelraspuzzi for the invite. Also, got to show off Mave @mavehealth at the open mic.
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Paste your spreadsheet into the Flux chat. No import format, no cleanup. Copy cells from Excel or Google Sheets, or attach the CSV or XLSX. Flux reads the columns and puts them to work: add the parts, fill in missing MPNs, check stock. Legacy PCB tools don't do this.
Flux card: Paste your spreadsheet into the Flux chat. A real Flux chat message with a sourcing sheet pasted from Excel, two rows missing an MPN, and the Flux Components table afterwards with all 11 parts added, including the MPNs Flux picked for the 3.3V regulator and the green LEDs.

ALT Flux card: Paste your spreadsheet into the Flux chat. A real Flux chat message with a sourcing sheet pasted from Excel, two rows missing an MPN, and the Flux Components table afterwards with all 11 parts added, including the MPNs Flux picked for the 3.3V regulator and the green LEDs.

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Go from a product idea to a project spec in one conversation. Flux now walks you from a rough idea through requirements and feasibility to a written project spec. A smart home maker who starts with only an idea ends the chat with a spec to design from.
Flux card: Go from a product idea to a project spec in one conversation. A chat message asking for a smart plug that measures appliance energy use, above the project specification Flux wrote for it.

ALT Flux card: Go from a product idea to a project spec in one conversation. A chat message asking for a smart plug that measures appliance energy use, above the project specification Flux wrote for it.
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How to build hardware in 2026: 1. Describe it
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Copper fills and connections update faster on big boards. Flux now recalculates fills and connections faster, and updates every layout in a project at the same time. Automotive engineers wait less after each edit on large, dense boards with many layouts.
Flux card: Copper fills and connections update faster on big boards. A Flux PCB layout of a stereo amplifier board with red copper fills and routed traces.

ALT Flux card: Copper fills and connections update faster on big boards. A Flux PCB layout of a stereo amplifier board with red copper fills and routed traces.
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Last night we hosted the 138th SF Hardware Meetup at Flux HQ for #SFTechWeek Thank you @michaelraspuzzi for organizing, @ngpadgett for being emcee and @mantle3d, @saba_khalilnaji, @fjeg1987 and everyone who pitched at the open mic.
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More events to come!
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Vibe hardware is real
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See each enclosure part on the canvas as soon as it is ready. When Flux designs an enclosure, each part shows up on the canvas as soon as it is made, then Flux checks that it all fits. Wearable builders can watch the board, battery and case come together and see if they fit.

ALT Flux card: See each enclosure part on the canvas as soon as it is ready. A Flux 3D view of an enclosure Flux designed, turning on the grid, with a USB-C opening, a button and corner screws.
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