I tried to use OpenMV to guide a robot arm to pick up a coin to learn robot and computer vision. I learned that a good and stable lighting is critical for color blob tracking.
I tried to add an 8 Neopixel ring which fit the lens perfectly. However, I learned that the ring adds too much light right under the camera and add almost no light 2 inches away.
I found professional lightings are huge panel or ring light with diffuser. I’m wondering do you have any recommendation for adding lighting for OpenMV?