This example demonstrates how to use the navigation switch and detect if the SD card is inserted. The !INT pin of the GPIO expander IC (PCA9554) triggers an interrupt any time a button is pressed or ...
After being introduced to Arduino and electronics through the "30 Days Lost in Space" Adventure Kit from Inventr, I was served a social media ad for a small consumer button device that logged events ...
Over the summer [ElectroSmash] put the finishing touches on the Arduino Audio Meter, a shield for the Arduino Uno that visualizes various aspects of an incoming audio signal on a set of four 8×8 LED ...
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