• DIY vending machine with Arduino November 17, 2017
    Have you ever wanted a vending machine for snacks but didn’t know where to start? With an Arduino Mega, some motors, and an infrared sensor to detect coins, Dejan Nedelkovski decided to build his own using only hand tools. The DIY vending machine’s structure is made out of MDF, and uses wires bent into helical shapes to twist items […]
  • An excellent two-sided UV exposure box November 16, 2017
    If you want to make your own custom PCBs at home, one method is to paint a circuit board blank with photosensitive material, then expose the portion you don’t want to UV light using a printed transparency. After a process of etching and stripping, the correct traces are generated. As seen here, in order to […]
  • Creating a classroom quiz machine with Arduino November 14, 2017
    Quiz games, where contestants try to “buzz” in and answer questions make for fun televised game shows, but they can also be great for making learning fun. In order to avoid paying several hundred dollars for an official quiz machine, Instructables user “arpruss” decided to build one for his school using an Arduino Mega. The […]
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