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I wanted something to display data from my raspberry pi - and these were just the thing. They both arrived undamaged, so I soldered one up, and hooked it up to my pi (A raspberry pi 1 model b+). All the tests/examples (from the repo below) worked, and the little things are BEAUTIFUL!
There's a FANTASTIC little library you can download at github : gavinlyonsrepo/SSD1306_OLED_RPI You'll need to install a secondary library, but its easy and fast to download and build.
FYI: The displays I received February 2023 are silk-screened "0x7E" on the back, but as others have said they actually respond on I²C address 0x3C. Other than that, they were easy to use with an Arduino Nano using the AdaFruit SSD1306 library.
The product worked well a few times. By about the fourth time I reflashed from an arduino they would burn out. Bummer bc the displays were big and bright.
I ordered the white displays which were priced more than blue, but I received a box marked white but I was disappointed to see that after soldering and powering up, the displays were blue. The blue displays work fine, aside from being not the color I ordered.
Clear and bright white little display. Easy to read when using a 2x text setting depending on viewing distance. Works with the libraries and example code found on git hub with a Teensy, no problem. Be sure to set the address correctly in your program.
Aren’t these the cutest little displays? I have mine working with an Arduino Uno board. Simple wiring. I have no idea how they can make these so cheap. The display is crisp, clear. It is white on black.