After reading a couple of the negative reviews here I'm compelled to offer my own experience which has been 100% positive.

Qwilic makes this display plug and play, and super convenient for quick experiments or rapid prototyping. The getting started guide had me up and running with an Arduino example in about 5 minutes- the process can be boiled down to: 1) download SSD1306 zip, 2) include the zip as a library, 3) select example code and upload sketch. Simple.

Adafruit's GFX library is high-level and very easy to use. Methods like drawCircle, fillRect, and println make it pretty easy to learn from example code alone. I appreciate the standard and interoperability here- thank you!

Testing with an Artemis, the display seems sharp and responsive.

This tiny (tinier than expected) and bright display added an inexpensive way for my ATmega32u4 project to provide visual feedback to the end user. It also helped by eliminating the need for using a PC and Serial Monitor during troubleshooting. Because of the small size of the display, I found that setting the display to show two lines of 2x size text works better than three lines of 1x size text.

What I did not like was having to download additional libraries in order to use it with the Arduino IDE. Hopefully future releases of Arduino IDE will allow automatic library download/install. For example, when I add #include <Adafruit_SSD1306.h> to my code to allow communication with this display, future version of Arduino IDE can automatically download the necessary libraries instead of providing me with error message.

Great display overall; works as well as other Zio products, and the shape was also more convenient for attaching to different wearables and other objects. The red color pcb is a fun change

I think I'm "competent" in programming with Arduino IDE, in so far as I have a handful of other things I've installed libraries for off of the github. A few different temp/hu sensors, clocks, servos, etc. The IDE these days is pretty easy, aside from having to remove that annoying little - in the folder name beforehand. All those libraries install, and the examples just compile and work. When I #include them into my own code, they just work like the examples.

I have no idea why these libraries don't like playing on my computer (Linux) but I chased error messages for maybe an hour before giving up. Can't find the I2C header..Can't find the SPI header..after chasing those around, variables came up out of scope, even though they were global in the header...

Aside from that, the documentation is Alice's Wonderland of links. Maybe I'm spoiled with products that have all the libraries, schematics, eagle files, and everything else that could possibly be needed all under the Documents tab of the product listing? Finding yet another library that is supposed to support the other two on a page 3 links away from the product page was the last straw for me, especially since it was the 3rd library that didn't play well in my sketchbook. Does it really have to take three imported libraries, anyway?

I believe either the libraries need improvement or the coding skills need to be upgraded. I'm glad I anticipated this problem and bought the LCD with backpack, extra 10 bucks for a product that just works so I can get on with it.

As a previous reviewer said, the support for this product is very poor. The links point to Adafruit libraries, which is typically a sign of trouble. After installing three different libraries, the code simply does not compile for the Sparkfun Redboard Artemis ATP board (or any other Apollo 3 board I tried). Apparently, several functions, including digitalPinToPort and digitalPinToBitMask, are not defined. Waste of time and money.

No connector provided with it. Proprietary socket on the device that's too small and fiddly to consider unsoldering in order to put an available connector. Cant use this and I'm not forking out $10 postage to buy an overpriced $1.50 connector

put it in my piunora. https://www.printables.com/model/103358-piunora-cm4-case

Works totally as expected using circuitpython

The small and slim design of this display makes this display my first choice for a quick drop-in debug, monitoring or sensor data screen especially for projects where I don't need a big display or want it only on the Qwiic bus while getting the rest of the project to work. Really compact and efficient design. Good job here! Even thinking about using it for a new wearable project.