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 power delivery, including batteries, charging, protection, and the clean rails everything else depends on, plus the full board workflow: schematic capture, layout, DRC, gerber export, ordering, assembly, and bring-up.

In fabricationPOWERL2

ESP32 Li-ion Battery & Power Module

Cut the cord: rechargeable power every project reuses.

Track: POWER
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.

Get notified when it opens

What you'll build

Cut the cord. Design a rechargeable single-cell Li-ion power module with proper charging, load-sharing (so the board runs while it charges), and clean, low-noise rails using an LDO after a switching regulator. It's built as a reusable building block — every portable board later in the curriculum reuses this exact power design.

It sits on the POWER track: power delivery, including batteries, charging, protection, and the clean rails everything else depends on.

Tools for this build

Free calculators that do the math this board needs. Each is worked from a real OTD board, with the formula and a cited source.

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.

01REQUIREMENTS
02BOM SOURCING
03SCHEMATIC
04LAYOUT
05DRC + GERBER
06ORDERING
07ASSEMBLY
08BRING-UP
09REVISION

Builds on

ESP32-S3 USB-C Breakout Board

Part of these builds

★ The 8-Channel EEG Command the Swarm Motion & Actuation Power Systems

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 power delivery, including batteries, charging, protection, and the clean rails everything else depends on, 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 →