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In fabricationCOMMSL2

Isolated SPI Bridge (ESP32)

Galvanic isolation for clean, safe measurements.

Track
COMMS
Level
L2
Prerequisites
1
Status
Coming soon

▸ Register interest

This board is on the bench. Leave your email and you'll be first in when it ships, and your interest helps decide what we build next.

What you'll build

Some measurements demand galvanic isolation: a complete electrical break between two halves of a circuit, for safety and noise immunity. You'll bridge SPI across a digital isolator and power the far side with an isolated DC-DC converter. The catch you'll solve: those converters are noisy, so the isolated rail has to be cleaned up before it can feed sensitive analog circuitry. Essential prep for the EEG front-end.

It sits on the COMMS track: wireless links and meshes that get boards talking to each other and to a hub.

The build pipeline

No steps skipped, no black boxes. Each stage is gated on real proof of work: a clean ERC, valid gerbers, a passing bring-up. You finish having actually done the engineering, not just watched it.

  1. 01REQUIREMENTS
  2. 02BOM SOURCING
  3. 03SCHEMATIC
  4. 04LAYOUT
  5. 05DRC + GERBER
  6. 06ORDERING
  7. 07ASSEMBLY
  8. 08BRING-UP
  9. 09REVISION

Builds on

Part of these builds

★ The 8-Channel EEG

Questions

When does this course open?
It's in active production. Join the waitlist and we'll email you the moment it goes live, and the demand signal helps us decide what to build next.
Is it beginner-friendly?
This is an intermediate L2 subsystem that builds on the foundations. Every stage is explained from first principles, so you can follow along as long as you're comfortable reading a schematic.
What will I need to build it?
The course overview will preview for free; the full course is a one-time purchase (no subscription). Building the board for real also needs its bill of materials (listed in the course) and a small PCB order from a fab house. The course walks you through both.
What will I actually learn?
You'll learn wireless links and meshes that get boards talking to each other and to a hub, plus the full board workflow: schematic capture, layout, DRC, gerber export, ordering, assembly, and bring-up.

Part of the path from your first board to a brain-computer interface. See the full skill tree →