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
volt
The unit of voltage.
One volt is one joule of energy per coulomb of charge. Logic in this course runs at 3.3 V or 5 V.