মূল বিষয়বস্তুতে যান
রোবোট্রি ল্যাবস
Back to Courses
Beginner Course
2 lessons22 min total

Digital inputs

Read buttons reliably with pull-up resistors, and stop bouncing contacts from fooling your code.

Your Progress0%
Start Course

Course Syllabus

1

Buttons and pull-up resistors

Why an unconnected input 'floats', and how INPUT_PULLUP fixes it.

Simulation12 min
2

Debouncing and edge detection

Count presses correctly by detecting the moment a button changes.

Simulation10 min