My, how deceiving looks can be. At first blush, the Raspberry Pi 3 Model B appears physically identical to the year-old Raspberry Pi 2 Model B: the same port selection, the same GPIO pin layout ...

They include its feature set (like the GPIO pins), its ease of access, and its price. ... The Raspberry Pi 3 is clocked at 1.2GHz compared to the 900MHz of the Pi 2, ...

The Pi 3 is a proper computer that also happens to have GPIO pins, a huge development scene, thousands of examples for any hardware hack you can imagine, and a community with millions of members.

But it's the nonstandard stuff that makes the Pi so exciting. A 40-pin GPIO header gives you connections for attaching all sorts of sensors ... The Raspberry Pi 3 B+ is outfitted with a 1.4-GHz ...