This has been the conventional wisdom for years now, and now that the updated Raspberry Pi 2 is out ... 5444B to a pin on the GPIO pin and toggling between zero and one as fast as possible.

That is, until now. With the introduction of the $15 USD Raspberry Pi Zero 2 W, the ultra-compact Linux board gets a much-needed performance bump thanks to the new RP3A0 system-in-package ...

Consultancy has designed a simple board called the Pico Indicator to add LEDs to the GPIO and power pins of the Raspberry Pi ...