General
Welcome to My Electronics Blog
A personal technical blog where I document electronics projects, Arduino experiments, ESP32 builds, sensors, IoT, and the things I learn along the way.
Embedded & Circuits
Practical, no-nonsense tutorials on Arduino, ESP32, sensors, and embedded systems — written from the bench, not the marketing copy. I document what actually worked, what didn't, and why.
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ESP32
Interfacing an HC-SR04 Ultrasonic Sensor with ESP32
A practical, wiring-first guide to reading distance from an HC-SR04 ultrasonic sensor on an ESP32 using the Arduino core, including the 5V-tolerance gotcha most tutorials skip.