Internal i2c pull up on LCD-14074
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rustycoat commented
I've run across a reference somewhere that OpenLCD uses a 4.7k internal pull up resistor on SDA/SCL, but that reference was for non-RGB older versions. The hookup diagram on sparkfun makes no mention of any internal pull-up (OR how to disable it).
Does this pull up exist and if so how can it be disabled?
rustycoat commented
Looks like it is labelled on the board. I will note that there is NO documentation whatsoever of this in the hookup guide.