connect to the column C1-C3 pinouts of the keypad Next is a project example, where the Arduino is instructed to do something based on a correct key (secret number) being entered into the keypad, ...

When [Doug] moved into his new house, he found an old alarm panel set up — but ... project only showed you how to interface the Arduino with the keypad — [Doug] went the extra mile and ...

[Andrea] just sent us this great student hack he made for his room. He’s constructed an Arduino keypad door lock — without using any proper fastening hardware! The entire build is made out of ...

To be specific, it isn't an Arduino brand, it is a DigiSpark, but the trouble isn't with the device itself. The problem is with a buzzer. I got the Velleman svm06. It says it is rated at 3-7VDC ...