The Raspberry Pi Zero (without WiFi) is an ultra-low-cost, compact single-board computer available on Robu.in. It’s cheaper than many Arduino boards but offers a fully functional motherboard, ideal for learning and small projects. The latest version (V1.3) includes a camera connector (CSI 0.5mm pitch) for easy attachment of camera modules. Despite its minimal size, it remains popular for DIY, education, and prototyping in the maker community.