Note: I am using GPIO13 for the PIR sensor. Feel free to change the port to something
else by redefining PIR_SENSOR_PORT in mqtt_demo_yeti_cam.c.
This project implements a battery-powered surveillance system that optimizes for energy usage. A PIR sensor is used so that when motion is detected, an ESP32-CAM will wake up from deep-sleep mode. When awoken, jpeg-encoded images are taken while motion is detected. The images are published to an MQTT topic over WiFi with a rule set to upload those images to S3. These steps are not necessarily sequential. The two cores provided by the ESP32 allows us to take photos while sending them over MQTT concurrently by allocating separate tasks.
Install esp-idf and run the usual command for flashing and monitoring an ESP board in the root directory of this repo
idf.py flash monitor -p$USB_PORT