Feedback on output pin of ESP32

[ghost]

Hi,
props to your work.
I am new to progamming in Java, so let me ask this question: Where do I have to put the part, that turns on e.g. a led, when a special light colour is detected?

I want to have feedback from the microcontroller, when a flashlight is pointed on the camera (-> detecting white), to use the signal for hardware issues.

Best regards from Germany,
Paul Loer

[fustyles]

Use Tracking.js to detect color. (Line 1102-1155)
https://github.com/fustyles/Arduino/blob/master/ESP32-CAM_Tracking.js/ESP32-CAM_Tracking.js_color/ESP32-CAM_Tracking.js_color.ino

Video
https://www.youtube.com/watch?v=ywo0wwn-VDc&list=PLZe8S9aHg1TNggXgAQjRhzPN-YI6vTbBn&index=20&t=0s