
ESP32-CAM Smart Doorbell Part 3: With Rock-Solid Reliability
The final part: battery backup, OTA updates, watchdog, health monitoring, and full Home Assistant / MQTT integration – turning your weekend project into a 24/7 reliable security system.
Hey, I'm Kukil. This is my journal - a running log of the things I'm building, breaking, and occasionally understanding.
If you like watching someone figure things out in real time, stick around. New posts whenever something interestingexplodes(literally or figuratively).
AI/ML
Robotics
Microcontrollers
Automation
3D Printing

Bayes’ Theorem is everywhere in machine learning, yet strangely hard to feel intuitively. Even after years in AI and computer vision, I still found it confusing. A centuries-old idea powering today’s models, but never explained in a way that truly clicks. This post is a simple, human walkthrough of Bayes: what it means, why it matters, and how it quietly runs beneath everything we build in modern AI.

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The final part: battery backup, OTA updates, watchdog, health monitoring, and full Home Assistant / MQTT integration – turning your weekend project into a 24/7 reliable security system.

Upgrade from Part 1: automatic porch light when dark + motion, real doorbell when door opens, and photos saved to microSD when WiFi drops.

A clean, single-board ESP32-CAM motion-triggered camera that instantly sends a photo to your Telegram when someone is at the door. No extra Arduino, no Gmail, no outdated hacks.
Hi! I'm a passionate developer exploring the intersections of AI/ML, Robotics, Microcontrollers, and Automation.
Through this blog, I share my learnings, experiments, and best practices in these exciting fields.
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