Total mastery over the pinout and functionality of the PCA9306 for conversion of logic levels from 5V to 3.3V. A step-by-step interfacing diagram for the PCA9306 to Arduino UNO. Working example with ...
// Arduino sketch that configures pins 7, 8, 9, 10 as outputs for active-low relay inputs and cycles each relay on for 500 ms then off. // Buy this module: https ...
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