Cascading Dot Matrix and STM32
In order to connect the displays in cascading mode, the data output pin (Dout) of one is connected to data input pin (Din) of the other display. All the displays are connected to the same CS pin.
In order to connect the displays in cascading mode, the data output pin (Dout) of one is connected to data input pin (Din) of the other display. All the displays are connected to the same CS pin.
LCD 16×2 have around 16 pins which needs to be connected to microcontroller in order to make it work. But by using an I2C extender, we only needs to connect 2 pins (SDA and SCL) to the microcontroller.
This oled display uses the I2C protocol to communicate to the microcontroller. So here you need only 2 pins i.e. SDA and SCL from the microcontroller and..