Taste The Code on MSN

Arduino heart rate monitor using Pro Mini PulseSensor and OLED for beginners

In this video I'm building an Arduino Heart Rate Monitor that is housed in a toy handle in the style of the Star Trek Tricoder. The device uses the PulseSensor with an Arduino Pro Mini and an OLED ...
Android Central on MSN

What is PWM dimming, and what are the alternatives?

Lots of modern phones use pulse width modulation, or PWM, to manage brightness. But what is PWM, why is it harmful, and what ...