02-26-2026, 04:14 PM
for the correct operation of the display using the U8G2 library and the I/O module using the PCF8574 library. It is necessary to specify the operating time of the 100 kilohertz bus before initializing the U8G2 .
u8g2.setBusClock(100000);
u8g2.setI2CAddress(0x3C*2);
then there shouldn't be any problems.
I hope my experience will help someone in the future!
thanks for the attention!
u8g2.setBusClock(100000);
u8g2.setI2CAddress(0x3C*2);
then there shouldn't be any problems.
I hope my experience will help someone in the future!
thanks for the attention!