In the good old days, all keyboards had indicator LEDs that showed the on/off status of Caps Lock, Num Lock, and Scroll Lock. Nowadays they’re not so ubiquitous. My fancy-schmancy Logitech keyboard, ...
This project demonstrates how to interface a simple keyboard with the STM32F407 microcontroller using 4 push buttons as input keys and 4 LEDs as output indicators. When a button is pressed, the ...
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