simonvav detailed how they added a camera to a 43g helicopter on Hackster.io:
However, there were four problems that needed to be solved: how to preserve the helicopter center of gravity, how to make the camera removable, how to provide battery power to ESP32-CAM module which power supply voltage may not exceed 3.6 V and how to lower the helicopter motors electrical noise to an acceptable level to enable ESP32-CAM module operation even at full throttle.
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