Sensor‑based currency counter using an IR sensor and a colour sensor with an Arduino and 16x2 LCD. Notes are detected as they pass, their denomination is identified from colour patterns, and the ...

The sensor continuously sends out infrared light and measures how much of that light is reflected. When a reflective object is within its set detection range, it returns a low signal. The Arduino ...

A real-time lap timer for Mini 4WD racing, built with Go and vanilla JavaScript. An Arduino with an IR sensor detects each car pass and triggers lap recording via serial port. Results are broadcast ...

A growing range of Arduino-based robotics resources now combine sensor integration, coding fundamentals, and practical hardware skills. From beginner micro servo tutorials to advanced sensor ...

Some readers may recall building a line-following robot during their school days. Involving some IR LEDs, perhaps a bit of LEGO, and plenty of trial-and-error, it was fun on a tiny scale. Now imagine ...