The Solderless Solar version of the Marble Machine brings the same tick-tock pulse movement but with none of the molten metal! The only tools required to get this beauty running is a phillips-head screwdriver, some glue, and a bit of elbow grease.

Our Solarengine circuit stores the light from the solar cell, and releases it in an occasional pulse that drives the mechanics. In sunlight, the motor will pulse every few seconds, and drop a ball every half minute. In indoor light, motor pulses decrease to every few minutes (be patient). But you can always use the hand crank to manually advance the marble wheel.

Features:

• Easy to build, with engraved building notes
• Solar-powered or hand-crank operation
• Operates in indoor light!
• 3/8″ steel balls

Each kit includes:

1 x Set of laser-cut Fiberboard parts
1 x  GM9 motor
2 x #4x½” screws
7 x 3/8″ steel Balls
1 x Double-sided sticky tape
2 x 2-conductor wire
1 x Solar Engine circuit board