TGP #0610 | DIY Rocket Engine, Pebble Watch for sale

In This Episode: DIY 250 lb thrust Liquid Oxygen/Kerosene Rocket, Smart Citizen: Arduino-compatible and packed with sensors, Lego Drum Machine Runs on Automatic, Lego version of the world's largest ship sets sail, Colossal chart compares hundreds of sci-fi's greatest spaceships, An Improvised ATtiny2313 Logic Analyzer, Pebble goes up for sale through AT&T stores starting September 27th