About the Authors

image James Floyd Kelly has degrees in English and engineering, the perfect combination for writing about science and technology. He lives in Atlanta with his wife and two young boys, and he always loves to learn new skills. He has written books that teach readers how to build their own CNC machines and 3D printers, books for kids that teach them how to build and program LEGO robotics, and books on many other topics. He loves to tinker in his workshop and is hard at work on more books.

image Harold Timmis studied computer engineering at the ...

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