2.4" 2.42 inch 128x64 OLED LCD Display Module SSD1309 7 Pin SPI/IIC I2C Serial Interface for Arduino UNO R3 DIY Electronic - Blue Light

Display that was received doesn't match the photo. Following the instructions for i2c communication didnt do anything and cannot get either display I ordered to work. There is zero documentation on it.

Arrived not as pictured. Ordered several in white green and blue. The white and green were as pictured and was easy to swap them to I2C. The blue was a different board, connector was on the side not the top, the hole spacing on the blue boards was different - would not fit the mounts that the white and green work with.

First off, what I received was not the same as pictured. Also, this is spi not i2c. The connector is on the side and there are no instructions on converting it to i2c. I think i may have found one web side that talks about converting it to i2c. I mean who wants spi these days. It should be defaulted to i2c not spi. I may return this display. Okay, so after many days of searching online I figured out how to hook up this display and get it working. Ypu have to include the ug82 and spi library, but works great so I have updated my review to 4 stars. I am not sure if I am going to leave it as spi or try to convert it to i2c. There are no real instructions on converting this board so would be more trial and error since there is not even a schematic available and I don't even know the company that made it.

I bought 2 of these monochrome displays (1 blue and 1 amber). Very easy to use with the u8g2 library. These displays use the U8x8lib.h header file and has a 50+ fonts it can use in various font sizes. Brightness is good and easy to read. Only issue I have is that the pin connectors are in different locations - one has it on the long side, the other on the short side. However, both pin arrangements are identical.

First of all, there were no header pins included despite being shown in the picture. Tried SPI - works well. Re-jumpering for I2C is a real pain. The cable connecting the chip to the actual display is must be disconnected to get to the 3 jumpers required for I2C. That connector is VERY fragile so be careful removing the cable from the connector. I would have preferred that the display module come pre-wired for I2C and not SPI. After spending much time re-configuring for I2C, it worked well.