How to make Remote Control Toy Helicopter at Home - diy matchbox helicopter using dc motor

Spider robot promises to build houses in just one day A spider-shaped construction robot named Charlotte is being developed in Sydney to 3D-print a full-size home in just 24 hours. The robot autonomously builds structural walls for a 2,150-square-foot house using sand, soil, and clean waste, eliminating cement and reducing carbon emissions. Its multi-legged design allows it to move across uneven terrain while compaction and extrusion techniques create continuous walls without mortar. Disclaimer: