The method of testing was connecting a PicoScope 5444B to a pin on the GPIO pin and toggling between ... Using the same experimental setup, the Raspberry Pi 2 is about 2 to three times faster.

For hardware, everything you’d expect from the GPIO pins on the Raspberry Pi is present on the Raspberry Pi 2. It’s the usual 40-pin expansion header we’ve all come to expect, and as far as ...

The first is the $1.10 RP2350A. This is what we find on the Raspberry Pi Pico 2 and Pico 2 W. The QFN-60 package has no internal flash, 30 GPIO pins, of which there are four analog inputs.