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GOTCHA GADGETS teaches children the basics of electronics while playing tricks on family and friends With this book kids can build a door alarm a motion detector a light sensor and a push button sound machine Then use them to set a snoopy sibling trap wire the biscuit jar play audio limbo confuse the cat andIncludes four build it yourself electronic gadgets and four hilarious sounds Putting science and electronics in the service of immaturityGOTCHA GADGETS teaches children the basics of electronics while playing tricks on family and friends With this book kids can build a door alarm a motion detector a light sensor and a push button sound machine Then use them to set a snoopy sibling trap wire the biscuit jar play audio limbo confuse the cat andIncludes four build it yourself electronic gadgets and four hilarious sounds Putting science and electronics in the service of immaturityGOTCHA GADGETS teaches children the basics of electronics while playing tricks on family and friends With this book kids can build a door alarm a motion detector a light sensor and a push button sound machine Then use them to set a snoopy sibling trap wire the biscuit jar play audio limbo confuse the cat andIncludes four build it yourself electronic gadgets and four hilarious sounds Putting science and electronics in the service of immaturity