This beginners tutorial will teach you how to combine a couple of different output devices with the capacitative touch buttons on the Pimoroni Explorer HAT/Explorer HAT Pro, to create a fun little PIN entry system that will flash LEDs and buzz a buzzer when a correct/incorrect code is entered.
We’ll learn how to connect up and control LEDs using the Explorer HAT outputs and a little piezo buzzer using the PWM (pulse width modulation) channel of the Raspberry Pi that’s broken out on the Explorer HAT.
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!