I cannot get any response from the display using a Nano. Can you point me to a test sketch to see if it's working?

Be sure to include Wire.h and connect clock and data to i2c pins (Nano: clk is A5, data is A4). These worked with "Adafruit_SSD1306" library. Declare: "Adafruit_SSD1306 yourOled(128, 32, &Wire, -1, 400000UL);" Also note, after calling yourOled.println("blah blah"); you have to call yourOled.display(); to actually update the thing.

how do i change the address to connect 2 devices at once?

Looking at mine, believe that is a no go. Have some 64 x 128 (squarish) with a solder jumper to pick between two addresses, neither of which is returned when running the i2c scanner. Looks like buying a multiplexer is the easy solution.l; sorry.

Does this come with instructions on how to program it?

It's controlled via I2C, there is no programming. You can use Arduino or other microprocessors. It comes with a short guide that how to use u8glib library, but you can find it on the Internet.

Will these work with an Adafruit Feather M0?

Yes, it should work with pretty much all ardruino as long as they have I2c

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3PCS 0.91 inch OLED Display Module IIC 128x32 OLED Screen Driver DC 3.3V~5V for Arduino ESP32 ESP8266 AVR PIC STM32 for Raspberry pi (Blue)

3PCS 0.91 inch OLED Display Module IIC 128x32 OLED Screen Driver DC 3.3V~5V for Arduino ESP32 ESP8266 AVR PIC STM32 for Raspberry pi (Blue)

Product ID: 197299538

Details

Brand
WayinTop
Connectivity Technology
I2C
Included Components
3 x 0.91 Inch
CPU Manufacturer
ARM
Wireless Communication Standard
54g

⚡Low Power Consumption

🔋3.3V-5V Power

🖥️128x32 Resolution

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Description

💡 Light Up Your Ideas with OLED Brilliance!

CRISP CLARITY - Experience sharp, vibrant text output with a high resolution of 128x32 pixels.
EFFORTLESS INTEGRATION - Utilizes I2C bus for simplified connections across various microcontrollers.
VERSATILE COMPATIBILITY - Perfectly suited for Arduino, ESP32, Raspberry Pi, and more.
ECO FRIENDLY PERFORMANCE - Lower power consumption means longer-lasting projects without sacrificing quality.
ILLUMINATE YOUR PROJECTS - Self-illuminating OLED display eliminates the need for backlighting.

The 3PCS 0.91 inch OLED Display Module offers a high-resolution 128x32 pixel output, operating on a versatile 3.3V-5V power range. Ideal for a variety of microcontroller projects, this self-illuminating display utilizes I2C communication for easy integration, making it a perfect choice for tech enthusiasts and professionals alike.

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