If you want to build a button array, follow this diagram. The main idea here is to connect each button to a diode in a row by column fashion, and read all the rows column by column. Rows works as ...

ButtonArray is an Arduino library/class which is used to measure an array of buttons. It uses an update-function to measure the buttons and a void function with an integer as parameter can be given to ...

I had a PC like this with a 2 digit display. LED segments were switched on or off by the Turbo switch and an array of diodes. Some of the segments were permanently wired on, no switching at all.

The OONTZ uses a 3D printed case, a 16 button keypad, an Arduino Leonardo, a monochrome driver, and a few potentiometers. It's actually a pretty simple thing to build yourself provided you can the ...

While you hopefully don't need one-button access to 911, a desk-mounted panic button is undoubtedly cool, and it makes for a great DIY Arduino project. You'll need a prepaid SIM card, an Arduino ...

The popular developer system Arduino has reached the version 1.0 milestone, ... The boards have a processor and memory, along with an array of interface ports for data to be sent and received.

After six times knock, Arduino find the knock pattern and save that in EEPROM. Now after saving the input pattern, press and immediately released the push button for taking input from the sensor to ...