31 robots in 31 days: Robots # 9, 10, 11
Three robots to share from the Earth Day Challenge back in 2008. This challenge was dear to my heart as a teacher to see robot designs that can be used as inspiration for class projects to help save resources at school and home. Each creator worked from their imaginations and used no building instructions.
The SwitchBot by cdgallahue really works in a kid's bedroom and turns on and off the lights based on your movement.
The Plant Waterer by mperrin connects a large 40 tooth gear to a pneumatic pump and a recycled water bottle.
The Generator bot by arclegoman12 shows that you can make people with LEGO TECHNIC and generate enough power to illuminate the lights in a light sensor.