How to use multiple of the same displays?

Projects Programming
1

So, I have been working with my nice little OLED displays for awhile and I have decided that I want to have multiple displays (being controlled by python over Serial connection). How is this possible? Here is my current code:

#include <Adafruit_SSD1306.h>
#include <splash.h>
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
Adafruit_SSD1306 display(128,32,&Wire);
String line1 = "Hey";
void setup() {
 
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
  display.display();
  delay(1000);
  display.println("Setting up...");
  display.display();
  Serial.begin(9600);
  delay(3000);
  display.setCursor(0,0);
  display.setTextSize(1);
  display.setTextColor(WHITE);
  Serial.println("HELLO!");
  

}

void loop() {
  //Serial.println("CHECKPOINT2");
  //delay(100);
  
  if (Serial.available() > 0) {
    display.setCursor(0,0);
    line1 = Serial.readString();
    Serial.println("Serial Available");
    Serial.println(line1);
    display.println(line1);
    display.display();
    delay(2000);
    display.clearDisplay();
    display.display();
    delay(1000);
    Serial.println("Ready");
  }
  else {
    //display.println("Nothing"); 
    //display.display();
  }
  //delay(3000);
  //display.clearDisplay();
  //display.display();

}

So, basically my goal is I could have

Adafruit_SSD1306 display(128,32,&Wire)
Adafruit_SSD1306 display2(128,32,&Wire)
Adafruit_SSD1306 display3(128,32,&Wire)
Adafruit_SSD1306 display4(128,32,&Wire)
Adafruit_SSD1306 display5(128,32,&Wire)
Adafruit_SSD1306 display6(128,32,&Wire)
Adafruit_SSD1306 display7(128,32,&Wire)
Adafruit_SSD1306 display8(128,32,&Wire)
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display2.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display3.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display4.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display5.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display6.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display7.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display8.begin(SSD1306_SWITCHCAPVCC, 0x3C);

Except the only problem is that the adress of ALL OF the displays are the same.
Can anyone help?
Thanks in advance.

2

since they all seem to work on I2C you could us a multiplexer like this one:

hope that helps...

3

See if you can change the I2C address on each display to a different value.

If not, it looks from the Adafruit Page that you can use a SPI interface. That would allow you to have a different Slave Select pin for each display.