I2C interface issue at LCD2004
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I2C interface issue at LCD2004
I have got a few LCD2004 20X4 lcd screen. When I use the I2C interface(red one Funduino brand) there is no problem but when I use black one MH brand there is nothing at the screen. Is there anybody to have idea?
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Re: I2C interface issue at LCD2004
I've some of these black PCBs running without problems.
Well, I assume that they are same, nothing is really sure with our chinese friends...
Anyays i often noticed that the small blue trimmer is fully turned to one end and nothing is visible.
So first question: Did you already try turning the trimmer? It's the contrast setting for the display.
Second question: What does I²C-Scan say?
Well, I assume that they are same, nothing is really sure with our chinese friends...
Anyays i often noticed that the small blue trimmer is fully turned to one end and nothing is visible.
So first question: Did you already try turning the trimmer? It's the contrast setting for the display.
Second question: What does I²C-Scan say?
Regards
Shardan
Shardan
Re: I2C interface issue at LCD2004
Ohhhh, thank you very much. Turning the trimmer fix the issueShardan wrote: ↑27 Dec 2018, 15:48 I've some of these black PCBs running without problems.
Well, I assume that they are same, nothing is really sure with our chinese friends...
Anyays i often noticed that the small blue trimmer is fully turned to one end and nothing is visible.
So first question: Did you already try turning the trimmer? It's the contrast setting for the display.
Second question: What does I²C-Scan say?
Re: I2C interface issue at LCD2004
Regards
Shardan
Shardan
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