From automated cat shelters to unique video game controllers, a quick look online reveals a treasure trove of Raspberry Pi projects that sit somewhere between mad science and marvels of engineering.

The Raspberry Pi 4 is a true next-generation Pi, with dual-screen 4K support, USB 3.0, a new CPU and GPU, and up to 4GB RAM. The Raspberry Pi 4 is a massive leap forward for the low-cost computer, ...