5 Pieces I2C Display Module 0.91 Inch I2C OLED Display Module Blue I2C OLED Screen Driver DC 3.3V~5V(Blue Display Color)

This is an awesome, tiny, high resolution OLED for any of your micro controller projects. It used the very common I2C bus, and runs on the SSD1306 display driver. 128x32 pixels gives you a nice sharp, crisp text output. Im very happy with these. This is a really good way to add a very compact LCD to your project. No need to add some big bulky backlit LED, go with this instead! I used the Adafruit SSD 1306 Libraries and they worked great. They are low power and bright. For the adafruit library examples, they really are over the top. There is no hello world essentially, so just do a google search for a hello world example for the libraries to get a basic starting point. Also, to rotate the display 180 Degrees, put in display. setRotation(2); in the setup. Basic usage for those libraries are.. display. display() ; display. clearDisplay() ; display. setTexSize(1-3) ; display. setCursor(0,0) ; // origin of text display. print(blah) display.println(-appended to last word blah, then new line ) ; As for the hardware, the displays are nice and small. If you think of your breadboard, they are 4 rows high, then about 12 slots wide. (Thats the entire board.) Voltage range is impressive and seems to operate at lower than 3.3, but Im running it on 4.5V and there are no problems. (Basically, 5v from the wall but through a diode on the arduino). It takes around 5ma. With a watch dog timer and adjustment I bet you could I get a whole pro mini project to run at under 3ma standby while keeping the display going. Refresh time on the display is very fast and cameras dont pick up any multiplexing/flicker. They did not come with headers, but the plated through holes are very well done and take solder well. The holes are pretty snug, which means its strong. It will be hard to desolder these after , so google some tricks on removing header pins to make your life easier!

These are great value. Just be aware they are very small. Until you get one in your hand, its hard to convey how diminutive they are. Fortunately, they are very crisp and bright

Excellent product

Worked well. The example code in Arduino IDE for the Adafruit SSD1306 Library worked and provided a start.

Was a little nervous buying them reference the price, but took a chance. The silk screening was very nice. Nice bright blue for the board, and bright white for the lettering. Each OLED came with a header. They fit very tightly. Once I connected the headers with the board with out soldering, I was able to hold the board upside down by the headers and they did not come off. (still kind of new to this, so dont judge me), soldered at 433 soldered perfectly. No burning, warping, or discoloration on the board, the heasers did not melt (make sure you use flux, makes a world of difference. Nice bright images even in full light. Was kinda mad when I first saw the screens, they looked all messed up, but saw that there are screen protectors on them. Nice little touch for a cheep priced screen. Ill buy more just to have some laying around. I got them up and running 09/29/2021. Now lets see how long they last.

I am using an ESP8266 with ESPHome. This was very easy to wire up and configure. ESPHome has great documentation on their website on how to setup font sizes, and to write values/images.

ill admit i didnt pay attention to the size in the description, they looked much larger in the photos especially for what they were displaying on the example. however they are about the size of a fingernail. not much use i can get out of them but ill keep them since they were cheap

3 were duds. 2 worked with ssd adafruit. Thanks to good comments here that led me to finding right drivers

Tested them with the Arduino sample sketches after downloading the corresponding libraries and they worked. 5 minutes from opening the package to getting something on screen.

First, dont be fooled by the picture on the Amazon page -- these are TINY little displays. But, unlike other reviewers, I had NO problem powering this from my ESP32 3.3V power rail.