In order to keep the bricky appearance of the train engine intact, [Robert] hollowed out a few cheap imitation LEGO bricks to house the electronics. He also cut out slots for JST connectors ...

For instance, he built an elegant drawbot out of LEGO elements, seen above. At first glance the monicker “spirograph” seems wrong, because where are the gears? However, [Yoshihito] has them ...

Experience the ingenuity of a wind-powered Lego gear machine that showcases a range of unconventional gear types never before made by Lego. Powered by a vertical wind turbine, this machine rotates ...