Hi guys,
I'v a problem. If I connect the power supply of LCD Module directly to the arduino board, the test programm works fine.
If I change the power supply of LCD to the external power module an reset the test programm, LCD only shows gibberish.
How can I fix this? Thx!
Background is, I need the 5V power port on the arduino board for a extra device.
Hi!
In the first pic where the GND from Arduino is connected?
Best regards.
I get the solution, thx to Paul_B. GND connection to the arduino board was missed.
Paul_B?
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