Qwiic Mux and oled

Qwiic System
1

Hi,

I’m having problems trying to use a .91in OLED V1.0 128-x32 display on a Qwiic mux. I suspect the reason is because of the pullup resister on the Mux and display. The documentation has not been updated for the display, but I’m assuming the jumper labeled I2C is the pull up resister and if I cut it it should work properly with the mux.

Could someone please confirm if this is the case?

Thanks,

Carl

2

Hi Carl.

Unfortunately I don’t have a schematic for the display but the jumpers on the back appear to be for enabling or disabling pullup resistors that are built into the display. You could try cutting them to see if that helps, it’s possible the resistor values might not play nicely with the Qwiic Mux.