ESP32 CAM adapter for 3 in 1 Smartphone Le KitHole diameter ~17mmWhen using the fisheye le, the le on the OV2640 camera module must be rotate/adjusted in order to produce an image that is in focus. Suggestion: run the CameraWebServer (Arduino IDE) in a New Incognito Window to monitor the adjustments in real time.I use PrusaSlicer or Cura, 0.2mm layer :