Learn how to create a simple heart rate monitor using an Arduino Pro Mini, PulseSensor, and OLED display. This beginner-friendly project is perfect for learning basic electronics, sensors, and ...

The nearly 45 minute long video wraps up with some optimization, as getting the display to move along with the knob in real-time on an Arduino UNO took a bit of extra effort.

The split-style mechanical keyboard has an orthogonal key layout, with transparent keycaps containing 0.42-inch diagonal 72x40 OLED displays. The PolyKybd also has two small OLED status displays ...