This is a 2.2” TFT LCD Display Module with an input voltage of 3.3V~5.5V, which is used to display colorful patterns and characters.
Things used in this project
Hardware components
Story
If you already have experience with the rectangular LCD modules, you will gain one more experience here: namely the round LCD module which is the size of a men's wristwatch. DFRobot offers it with example-codes for ESP and Arduino as Fermion: 2.2 ”TFT SPI Interface LCD Display (Breakout).
I especially liked the clock: quickly set the current time in the code and uploaded the sketch to the Uno: done. The PIN-Out can be done using the breakout with 8 jumpers.
Example: Clock
A graphic could also be converted into hex values with a desktop program and displayed accordingly on the LCD. However, I am inexperienced in using the Chinese characters and have not tried the example program.
Bitmaps on the fly
I think that with the help of the example sketches, doors will certainly be opened to carry this neat display with you on a backpack for on the go.
DFRobot Wiki with helpful information: 2.2”TFT LCD Display V1.0 (SPI Interface) wiki-DFRobot
Code
DFRobot_Display-master.zip 
