Just got my pimoroni 18 led I2C .I figured out most of the connections , only the one marked OE puzzles me. What or where on the pi do I connect it to.
Whoops. I think we might be suffering from a lack of documentation here :D
OE in terms of driver chips like this, means “Output Enable.” You don’t have to connect it to anything, it’ll have a suitable pull resistor to make sure the breakout is enabled by default, but if you pull it low ( to GND ) then it will shut down the outputs of the 18 LED driver. This is sometimes useful!