esp8266_i2c_lcd_test.py

[stefano3059]

I run the code but it doesn't show me the test sequence on the LCD

[dhylands]

When you powerup the LCD do you see a row of black squares? If not - you need to adjust the contrast voltage until you do. If you can't see the black squares by applying power, you won't see any tezt when its working (just due to the contrast being wrong).

[stefano3059]

Hi
Many thanks for your attention, I have read your answer, but I had already performed this procedure but without success.

thanks in advance for any other hint.

[stefano3059]

Hello
I found the problem of the LCD not working.
The cause was the malfunction of the breadboard, replaced now works fine.
Thanks again for your interest and see you soon.