Flying Goldfish / 空飛ぶ金魚
05/07/2026
A goldfish that flies through the air, flapping its tail fin rapidly. Built using only the parts from a single […]
Tenkyu and Yaguruma / 天球と矢車
05/05/2026
May 5 is Children’s Day in Japan. Koinobori are decorations that celebrate and wish for children’s healthy gro […]
Touch Sensor / タッチセンサー
05/02/2026
As of now, there’s no touch sensor in the LEGO CS & AI set. Kind of miss it, so I built one using the part […]