This project is an Arduino ESP32 based CO2 sensor using a 1.28" round display. So far I've used oled and tft displays in square and rectagular shapes so this was an excuse to try a round one. The 3d printed enclosure is a friction fit with one screw holding the board in place. A fair amount of pressure is need to insert and remove the usb connector so this should help keep everything in place. I see this as an evolving project since the capacitive touch display is not used and there is plenty of room in the enclosure for other items. More details: https://github.com/mike-rankin/ESP32_Round_CO2_Desktop_Sensor. This is GitHub account: https://github.com/mike-rankin where you will explore more excellent projects. He is a good DIY maker who designs custom ESP32 IoT projects using Altium Designer, Arduino IDE and Fusion360. Welcome everyone to follow.