Been having an issue showing any text on my LCD. Whenever I start/restart my node app, the LCD cursor moves a couple positions but that is it. I have tested it with a basic Arduino program on a Pro ...
The PCF8574/74A provides general-purpose remote I/O expansion via the two-wire bidirectional I2C bus (serial clock (SCL), serial data (SDA)).
Assume that you are moving towards a complex microcontroller project bundled with blinkers, beepers, and a display panel. To link a standard 16×2 LCD directly with the microcontroller, for instance ...
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