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.
(via raspberry pipod)
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