The circuit requires only two resistors, and the software to make everything run – a simple Python script – toggles the pin between input and output, checking if the button is held down for ...

How do you turn an LED on and off with a button on Arduino? We set the pinButton variable as integer 8 and we connect the button at pin 8 on the Board. Then the LED is connected to pin 2 using the ...

But if you just want to add in some buttons without reaching for an extra IC you’ll love this hack. [John Boxall] shows how to add four buttons using one ADC pin. The concept is nothing new.

Today, they're rolling out a new "Pin It" button that's designed to speed up the process of saving content to Pinterest by reducing the number of clicks by half.

Offered in a 6-pin SON package, the controllers are priced at US$0.40 in 1,000-unit quantities. For those applications requiring a single push-button input, TI offers the TPS3422 priced at US$0.34.

Linear Technology's LTC2952 is a power management IC with push-button on/off control for system power and system monitoring features.