Arduino, ESP32, sensors, and embedded-systems tutorials.https://example.com/en-ushttps://example.com/blog/welcome-get-started/https://example.com/blog/welcome-get-started/A personal technical blog where I document electronics projects, Arduino experiments, ESP32 builds, sensors, IoT, and the things I learn along the way.Mon, 28 Sep 2026 00:00:00 GMTGeneralElectronicsArduinoESP32IoTProjectsTutorialsAjmal Ali Ahttps://example.com/blog/hc-sr04-ultrasonic-sensor-esp32/https://example.com/blog/hc-sr04-ultrasonic-sensor-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.Mon, 21 Sep 2026 00:00:00 GMTESP32ESP32Ultrasonic-SensorHC-SR04ElectronicsArduinoAjmal Ali A