Girls Build Secret Knock Gumball Machine

Ruby, Lena and Charlotte are three young girls who built a secret knock gumball machine by following Steve Hoefer’s instructions in MAKE. As demonstrated at Maker Faire Bay Area 2011, a special knock (shave and a haircut, but don’t tell…) activates the gumball dispenser. For their next project they are thinking of designing a car that looks like a camel.

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More:

• Maker Pioneers: Kurt Fleischer
• Steve Hoefer’s secret knock gumball machine on Make: Live ep01
• Secret knock gumball machine in MAKE v25