Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

embedded-systems

Validating readings, returning error codes, and falling back to safe defaults

taught

Taught in

Defensive firmware
Embedded Systems and the Internet of Things

Requires

firmware-modules required

Required by

Building a timestamped data logger that survives missing sensors and corrupt records required
Hiding pins and parts behind an interface so a real sensor can be swapped for a fake required

Local knowledge map

Local knowledge map

Click to expand

Solid arrows are required prerequisites; dashed are recommended or helpful. Lower rows are more foundational. Click any box to jump to that concept.