If you want to add a keypad to your Arduino project, the options are pretty limited. There’s that red and blue 4×4 membrane we’ve all seen in password-protected door lock projects,… ...

Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.

In summary, a keypad would be quicker to use, but this is simple to implement Not in summary, read on…. Note: scroll down if you want to look at the test code. Setting a 16bit binary number that needs ...

This Arduino-based Pomodoro timer project also uses this 25-minute cycle. Once you push the button to start the timer, it will run for 25 minutes, display a count-up timer and a "Study time!" ...

The $87.36 Arduino Plug and Make Kit comes with an Arduino UNO R4 WiFi microcomputer featuring Bluetooth and its own built-in 12 x 8 LED matrix display, plus seven different Modulino components ...

This is all part of my personal challenge to quickly and accurately manually set 16bit numbers for microcontrollers. Thanks to the earlier hard work of others, writing libraries and how-tos, it worked ...