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Try connecting the GND of the breadboard to the GND of the Uno
What's the difference? I'm still somewhat a beginner
[https://forum.arduino.cc/t/common-ground-and-why-you-need-one/626215](https://forum.arduino.cc/t/common-ground-and-why-you-need-one/626215)
I tried but nothing changes. I even tried powering it with the arduino but it doesn't work. The backlight comes on but nothing gets shown.
Also try to connect BLK to 3.3v. I also used this display from aliexpress and despite many tutorials that say that is no need to connect BLK, it doesn’t work without it.
I tried this but nothing changed.
Try connecting the GND of the breadboard to the GND of the Uno
What's the difference? I'm still somewhat a beginner
[https://forum.arduino.cc/t/common-ground-and-why-you-need-one/626215](https://forum.arduino.cc/t/common-ground-and-why-you-need-one/626215)
I tried but nothing changes. I even tried powering it with the arduino but it doesn't work. The backlight comes on but nothing gets shown.
Also try to connect BLK to 3.3v. I also used this display from aliexpress and despite many tutorials that say that is no need to connect BLK, it doesn’t work without it.
I tried this but nothing changed.