@electrictech09: Count anything with invisible light. A CD4026 decade counter, a 7-segment display, seven resistors, and an IR LED + receiver pair. Every time an object breaks the invisible beam, the display counts up. No buttons, no touching — door counters, scoreboards, people trackers. 📌 Save this for your next sensor project. What would you count with an invisible beam? ↗️ Share this with someone who needs it. #7segment #diyelectronics #sensor #counter #electronics