Dev.to
6/18/2026

Build a ESP32-CAM Face Detection Without AI Training
Short summary
Learn to build face detection on low-cost ESP32-CAM hardware using cloud APIs instead of on-device AI models. This tutorial guides students through capturing images, uploading to face-detection services, and displaying results—no machine learning training required. Covers IoT fundamentals (Wi-Fi, APIs, JSON, embedded programming) and real-world use cases like smart doorbells and visitor counting systems.
- •Cloud APIs offload processing from resource-constrained microcontroller, eliminating need for model training
- •Minimal hardware required; accessible entry point for IoT and computer vision learning
- •Teaches practical embedded systems skills (Wi-Fi communication, API integration, image capture) without ML expertise
Generated with AI, which can make mistakes.
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