Like xn1ch1’s application, my push-button is connected to the Vcc rail, with a pull-down resistor to 0V. Xn1ch1’s framework stayed the same, with my adaptations limited to altering the states of three ...

This Device Lets You Order A Pizza With The Push Of A Button. November 13, 2013 10:52 AM ET. By . ... The hardware uses a combination of an Arduino circuit board and Raspberry Pi — a credit-card ...