💡 Electron Parade

Project 52: The ESP32-CAM Smart Bird Feeder

Look, I love nature as much as the next guy. But standing perfectly still in my backyard for three hours with a telephoto lens just to get a blurry photo of a pigeon stealing sunflower seeds? No thanks. I have code that needs to fail to compile.

Instead of waiting for the birds, why not make the birds trigger the camera themselves? Enter the ESP32-CAM. By combining it with a cheap PIR motion sensor, you can build a smart bird feeder that automatically snaps photos (or streams video) directly to your phone whenever a feathered thief arrives. Sure, you’ll still have to deal with the magic blue smoke when you accidentally wire the 5V pin backward, but at least you can do it from the comfort of your desk.

ESP32-CAM Bird Feeder

What You’ll Need

(Need a refresher on these components? Check out Lesson 123: Sensing Motion with PIR Sensors and Lesson 146: Data Logging with Micro SD.)

How It Works

The concept is beautifully simple. The PIR sensor detects the infrared heat signature of a bird (or a really ambitious squirrel). When triggered, it sends a HIGH signal to the ESP32-CAM. The ESP32 wakes up, snaps a high-resolution photo using the OV2640 camera, and saves it directly to the MicroSD card.

You can even take it a step further and have it connect to your home Wi-Fi to send the photo straight to a Telegram bot or an MQTT dashboard.

Inspiration & Excellent Guides

I’m not the first one to realize sitting in bushes is terrible. Check out these fantastic implementations of this project by other makers: