LCD Panel coming to Connected Little Boxes

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I thought it might be useful to add an LCD panel to the Connected Little Boxes. It took a bit longer to get it working than I expected, mainly because the library I’d been using wasn’t compatible with the suspiciously cheap LCD panels that I’d bought.

If you have problems getting your PCF8574 driven LCD2004 panel working with a PICO I would suggest that you do two things:

  • Remove the jumper on the back of the PCF8574 board and connect the LED pin to the VBUS pin on the PICO so that the backlight is powered properly.

  • Use this library to drive the device. It’s the only one I’ve found that works.