Online · electronics · apprenticeship · since 2015

Build real hardware.
Learn real things.

Learn electronics by working through real designs, builds, and stubborn bugs at the bench. You’ll get practice making your own boards and understanding what they do when you power them up.

Design
Assemble
Test
Troubleshoot
Revise

Find your bench.

Three ways in
FIRMWARE → HW

Software engineers moving to hardware

You write firmware and want to be more comfortable with the board underneath it. Follow a project from schematic to fabrication, with Chris walking through what to check along the way.

→ Start with the courses
BLIND SPOTS

Working engineers filling in gaps

Fill in the parts of hardware design you haven’t had time to study closely: signal integrity, power, and a more systematic approach to debugging.

→ Browse the library
PORTFOLIO

Career changers & self-taught builders

Work through your own boards from design to bring-up. Along the way, you’ll have projects you can show and talk through with confidence.

→ See how it works
The loop

Design. Assemble. Test. Troubleshoot. Revise.

A board rarely works exactly as expected on the first try. Test what you built, track down the surprises, and carry what you learned into the next revision.

01DESIGN
Design
fig. i

Skills & mental models

Work through the decisions behind a design: where to route a trace, which constraints matter, and how current moves through the circuit.

02ASSEMBLE
Assemble
fig. ii

Reality at the bench

Simulations don’t burn your fingers. Component selection, soldering, part programming, and the physical gotchas.

03TEST
Test
fig. iii

Verify what you built

Power up, probe nodes, capture waveforms — confirm the design behaves the way the schematic said it would, before you trust it in a system.

04TROUBLESHOOT
Troubleshoot
fig. iv

The critical skill

If the LED stays dark, start measuring. Follow the signals, narrow down the fault, and figure out what to change.

05REVISE
Revise
fig. v

Close the loop

Take your bench notes back to the design. Fix the symbol, adjust the footprint, reroute that trace, and try another revision.

Fifth edition
Practical
Electronics
for Inventors
SCHERZ · GAMMELL
The book

The book — and the community shaping it.

Chris is authoring the fifth edition of Practical Electronics for Inventors, due 2028. The Book Community runs alongside the writing: early access to the video course Chris is building in parallel — same material as the book, different format — plus a voice in what goes into the next edition. You don’t need to own the book to join, and you don’t need to join to read the book.

Available standalone for $1/mo, or included with the Apprentice and Master tiers below.

1000+
pages
18
chapters
5th
edition · 2028
01Theory
02Basic electronic circuit components
03Semiconductors
04Optoelectronics
05Integrated circuits
06Digital electronics
07…and eleven more
08Appendices & errata
Learn more → · join the Book Community for $1/mo

Start free. Go deeper when you’re ready.

Membership · 4 tiers
Tier 01
Free
$0
  • ✓Free intro lessons
  • ✓Podcast & blog
  • ✓Read-only forum
  • ✓Newsletter
Start free
Tier 02
New offering
—
  • ✓Something new is in the works
  • ✓A new way to go deeper
  • ✓Announced here first
  • ✓More details soon
Coming soon
Tier 02
Book Community
$1/mo
  • ✓Early access to the video course
  • ✓Help shape the 5th edition
  • ✓Private book-community forum
  • ✓Standalone or bundled above
Join the book community
Tier 04
Master
$279/mo
  • ✓Everything in Apprentice
  • ✓Two live sessions/mo with Chris
  • ✓Mentorship on your projects
  • ✓Priority design review
Get Master →

Get feedback before you send a board to fabrication. Cancel anytime.