World 4 · Raspberry Pi & GPIO · 3 min · PROMaking sound
The buzzer, and beeping in patterns
PRO · AI Lab
World 4: Raspberry Pi & GPIO is part of PRO
The first world of AI Lab is free. PRO opens the other 34 lessons in 8 worlds — simulations, quizzes and all.
PRO includes
- All 26 labs — every world, every lesson
- Practice exams and certificates
$8.33/mo, billed yearly ($99.99) · or $39.99 monthly