The Raspberry Pi Zero offers basic specs making it suitable for simple projects. The board features 512MB of RAM, 40 GPIO pins, and a single-core Broadcom BCM2835 processor clocked at 1GHz.

The original Zero was 0.3 ounces, but the Zero W may be a tiny bit heavier. The flagship Raspberry Pi 3 Model B that costs $35/£28 (or more, depending on the retailer) has dimensions of 3.4" x 2. ...