1. What you will build
Learn binary numbers with a 4-LED counter that shows 0-15.
Guided tutorial
Binary Counter
Learn binary numbers with a 4-LED counter that shows 0-15.
beginner · 25 Sept 2026
Difficulty
beginner
Learning complexity
Sections
6
Structured content blocks
Topics
7
Linked learning concepts
Related links
6
Next steps and references
2. Wire 4 LEDs
Connect 4 LEDs to pins 2, 3, 4, 5 representing bits 0-3.
3. Add Button
Connect a button to increment the counter.
4. Binary Logic
Use bitwise operations to set each LED based on the count.
5. Count Up
Each button press increments and wraps at 16.
6. Learn Binary
Observe how LEDs represent numbers in binary: 0001, 0010, 0011...
FAQ
Can I try Binary Counter in the simulator?
Yes. Use the Open in Lab action to load the guided build in the browser-based simulator.
Next step
Open this tutorial in the lab
Load the guided build in Ayantrik Lab and follow the same components and steps inside the simulator.