Desktop additive electronics fabrication

Working boards, with the passives printed in.

PrometheusPCB is a desktop machine we're building that prints functional, multi-layer boards with the resistors, capacitors, and inductors formed right in the layers. Most of your BOM gets fabbed, not placed, and you iterate in-house in hours instead of mailing designs to a fab.

On the list. We'll reach out before the first units ship. ⚡

Early access for hardware teams and labs. No spam, just build updates.

The problem

Every board revision costs you a week.

Software engineers ship a change and see it in seconds. Hardware engineers ship a board to a fab and see it next week, then find the one mistake and start the clock over. Every revision is a multi-day round trip. PrometheusPCB is built to collapse that loop into hours on your own bench, so the bottleneck is your ideas again, not logistics. And the stakes are rising: the new wave of hardware pushing into the physical world (drones, robotics, sensors, defense systems) is being built by small teams who live or die by this loop.

The leap

Don't just print the board. Print the parts into it.

Resistors and capacitors are the majority of the components on a typical board, often 70–90% of the part count. A desktop machine that only prints the wiring still leaves you hand-placing all of them. Co-fired ceramic doesn't: the same process that lays down traces can form resistors, capacitors, and inductors directly inside the layers. Production LTCC has done this for decades, inside specialist fabs with long queues and high minimums. We're putting the same process on a bench.

  • Passives print in. R, L, and C are formed in-layer as the board is built, covering the bulk of your part count.
  • You place the silicon and the picky parts. MCUs, ICs, connectors, crystals, and the few tight-tolerance passives land on standard IPC-7351 footprints the machine lays down for you.
  • Fewer parts, fewer joints. Delete the long tail of discrete passives and you delete most of the placement, soldering, and rework a revision costs.
IC you place · the silicon printed R printed C printed L
FIG · one build, everything in it · grey = ceramic dielectric · copper = printed conductor & passive · outline = the silicon you place
Where it fits

Not cheaper than a fab house. Faster than one.

Overseas fab house

Built for volume

5–10 days

Unbeatable per-unit cost at quantity, but every prototype revision restarts a multi-day round trip. Wrong tool for the early iteration loop.

Lab inkjet PCB printer

Built for institutions

six figures

True multi-layer printing exists today, at a price and footprint that lock it inside well-funded labs. Out of reach for most teams and startups.

PrometheusPCB

Built for the loop

hours

A desktop machine at a price a single team can justify. The target: a functional multi-layer board with the passives printed in, between morning and afternoon, on the same bench you design at.

What you get

A fab that lives on your desk.

01

Boards you power up

Printed silver traces, multi-layer routing, and embedded R, L, and C that carry real signals. These are boards you flash firmware onto and probe, not visual mockups.

02

In-house and private

Your design never leaves the building. No fab queue, no shipping, no exposing unreleased hardware to a third party. For defense and aerospace teams whose designs legally can't cross a border, in-house is a hard requirement.

03

Iterate, then iterate again

Spin a revision, print it (passives and all), test it, repeat. A fresh board every day instead of every few weeks.

Beta · limited first run

Bring the fab to your bench.

On the list. We'll reach out before the first units ship. ⚡

Tell us what you're building. It shapes the machine.

Go deeper

The proof is one click in.