If you’ve run out of I/O pins on a project and need a way to add user input you can find a slew of port expanders that work with various communications protocols like I2C and 1-Wire. But if y… ...

You can read the state of a button using Arduino and a few lines of code. The actual state is shown in the Serial Monitor window as 0 or 1, 0 meaning the. ... You can use other pin if you want to and ...

Adafruit Gemma Attiny85 Powered Button Sized Arduino Programmable Board. 3:02 pm January 22, 2013 By Julian Horsey. ... The analog input pin allows for easy integration with various sensors. 4.

One more suggestion: if we use an Arduino PWM pin as the common anode pin, we can power on/off the display and change its brightness. What if using Common Cathode Display. If we put in the sockets ...

The button states could easily be read by using an Arduino’s analog input. A Pro Mini model was chosen for its small size as it could be housed in the radio compartment of the dash.

– War game (for 2-4 adults) Watch this video on YouTube . “If you have kids, you are likely facing the same issues as we did with the Lego sets you bought for them.