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ESP32-CAM Projects
Camera capture, streaming, and image server projects using ESP32-CAM modules and OTA updates.
What this category covers
Camera capture, streaming, QR scanning, and vision projects using the ESP32-CAM module and OV2640 camera. A practical first build is Build an ESP32-CAM Face Detection Privacy Demo.
Start here: Verify power and upload settings first, then test a single capture endpoint before adding dashboards or detection.
Skills you practice
- camera pin mapping
- Wi-Fi image serving
- power troubleshooting
- frame-size tradeoffs
Related guides
Useful components
Related categories
Learning progression
- Understand the moduleReview the AI-Thinker pin map, camera ribbon, SD/flash constraints, and power needs.
- Set up the IDEInstall ESP32 board support before choosing the ESP32-CAM board profile.
- Serve a frameConfirm capture, Wi-Fi, and browser viewing before adding detection logic.
- Try vision tasksMove into QR scanning, face detection, or color/object demos only after capture is stable.
Choose the right project
- First camera testBest first project because it isolates power, board profile, ribbon, and Wi-Fi endpoint issues.
- QR workflowChoose this when the input is a printed visual code, not a general object.
- Privacy demoUse this as a face-region demonstration, not identity recognition.
- Security camera modelUse this for local-network camera viewing with explicit non-certified security limits.
Technical reality and troubleshooting
Limits to understand
- ESP32-CAM boards are more power-sensitive than ordinary ESP32 DevKit breadboard circuits.
- GPIO0 is for flashing mode only; leaving it grounded after upload prevents normal boot.
- The AI-Thinker camera pin map is board-specific and should not be generalized to all ESP32 boards.
Common failure checks
- Camera init failed: check AI-Thinker board selection, the OV2640 ribbon cable, the pin map, and stable 5 V power.
- Upload works but sketch will not run: remove the GPIO0-to-GND jumper and reset the board.
- Image is noisy or black: check lens cap, ribbon seating, lighting, frame size, and whether the board browns out during Wi-Fi activity.
Privacy boundary
Build an ESP32-CAM Face Detection Privacy Demo
Build a local ESP32-CAM face detection demo that distinguishes detection from recognition, with pri…
ESP32-CAM QR Code Scanner
Build an ESP32-CAM QR code scanner with AI-Thinker wiring, OV2640 grayscale capture, on-device Quir…
ESP32 Camera Capture Server
Build an ESP32-CAM capture server with AI-Thinker OV2640 pin mapping, FTDI upload wiring, stable 5…
ESP32-CAM Local Network Camera Demo
Build an ESP32-CAM local network snapshot page with AI-Thinker OV2640 pin map, stable 5 V power, FT…