Mindstorms powers Time Twister Lego clock
Ladies and Gentlemen, it’s Time Twister 2…
Clocks are a recurring theme on Gadget Master – check out the Pong clock, the Worduino word clock, the hard drive clock and the Nixie clock, for example – and here is a new Lego-based, Mindstorms-powered variant.
Each digit is made up of seven segments which are connected in a chain. The connections are made in such a way that a segment can be rotated 180 degrees before the next segment is affected.
By rotating the first segment a specific number of turns you can set the last segment in desired position. Then by rotating the first segment in the opposite direction a specific number of turns you can set the second last segment. By rotating alternately in one direction and the opposite direction, you can set all seven segments of a digit using only a single motor.
The specifications are:
Movement: Two LEGO Mindstorms NXT Intelligent Bricks. Five Servo Motors.
Width: 117 cm (46 inches)
Height: 46 cm (18 inches)
Weight: 8 kg (17 lb)
Alarm: Yes, constantly
Check out the rest of Hans’s blog, highlighting his Mindstorm robots – Tilted Twister.[Via TechnaBob]