Lego, building on the success of last year’s Lego Boost robotics kit, has announced the Powered Up Platform, a collection of new motorized, programmable, and smartphone-compatible Lego and Duplo sets.

Lego fans have come up with many ways to control their Mindstorm NXT robots, but most involved using wires. But if you own an Android phone, a new app could simplify things. The MINDroid app for ...