The Arduino monitors the battery level and indicates its charge on the RGB status LED. The Arduino can also trigger the camera’s shutter using an NPN transistor and 2.5mm 3 pole jack.” ...

That includes microcontrollers such as the ESP32 or Arduino Nano 33 BLE. But the post isn’t just theory.

This project uses a Raspberry Pi 2 or 3, an Arduino Uno, some servos, and a USB webcam. The end result is a camera mounted to the servo that’s controlled by the Arduino.

The power of Espressif’s ESP32-S3 meets Arduino’s unmatched customer experience, documentation and community — all in the compact form factor of the Nano. Provides support for both ...

Arduino Maker Nano RP2040 “Slightly shorter than a Pico, this board has 30 pre-soldered pins, all helpfully labelled on the silkscreen.