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I2C / LCD 2004 / Help needed!


Eric Keller

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Hello folks, 

This is my first post to the forum.

I cannot seem to get my LCD 2004 to work on my Le Potato AML-S905X-CC
I went back and forth a few times in armbian-config to enable/disable various items, but as it stands right now, I just have i2cA enabled.
 
The address of my LCD 2004 is at hex 0x27, and I am using GPIO pins 3 & 5 for SDA and SCL respectively, but it doesn't show up in i2cdetect -y 0:

root@lepotato:~# i2cdetect -y 0
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --    

root@lepotato:~# i2cdetect -l
i2c-0    i2c           Meson I2C adapter                   I2C adapter
i2c-1    i2c           DesignWare HDMI                     I2C adapter

Previously I had i2cb enabled as well.  I even tried pins 27/28, as well...  Nada...

What I can say is that I have two of these LCD2004 units and they both work on my Raspberry Pi 4b without problems, on pins 3 & 5 for SDA and SCL. 
My Le Potato is brand new and I just wanted to tinker with it as an alternative the RPi4b.

Here's the diagnostics log:
http://ix.io/4c7X

I welcome any and all help.
Have a nice day!

~Eric

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