I've commented about a few robotics things recently ( tennis , cyborgs and more ), but I'm buzzing about the potential opened up with the combination of AppInventor , Lego NXT Mindstorm and Android. AppInventor allows me to build a simple application for Android mobile phones by *just* dragging and dropping a few puzzle pieces around to build the logic and UI. The NXT Robot is a bunch of Lego Technic bricks, plus some sensors (e.g. Ultrasound, light, touch) and a few motors (but not just any old motor, effectively stepper motor style thing where you can control the speed and exact rotation angles), and a Lego CPU that can control the lot, and talk to all... including talking to the phone (and AppInventor app) via bluetooth... The possibilities are endless. Well, I've been playing with a few ideas... it can become a mobile controlled curtain open & closer, or the mechanics that can make my space travel for my phone easier by for example deploying the parachute when t...