Summary : Learn how to implement BLE 5.0 Extended Scanning on the ESP32-C3 and ESP32-S3. This guide breaks down the C++ Bluedroid code required to detect both legacy BLE 4.x and modern BLE 5 extended advertising packets, giving you complete…
This beginner guide explains a typical ESP32 BLE beacon scanner sketch: how scanning works, what RSSI means, how to detect iBeacon/Eddystone (or any BLE advertising packet), and how to filter by MAC address, UUID, or name. You’ll also learn the…
This beginner guide explains Espressif’s ArduinoOTA example for ESP32. You’ll learn what OTA is, how the ESP32 advertises itself on your network, how the upload works in Arduino IDE, what each callback means (start/progress/end/error), and the most common fixes when…
This beginner guide explains how to wire a pushbutton to an ESP32 and use it to control an LED. You’ll learn what digitalRead() returns, why pinMode() matters, and how to avoid the most common beginner issue: a floating input (random…
This beginner guide explains the famous Blink sketch line-by-line on an ESP32/Arduino board. You’ll learn what setup() and loop() do, how pinMode() works, what HIGH/LOW really mean, and why delay(1000) makes the LED blink once per second (plus fixes if…
ESP32 microcontrollers include multiple hardware timers that can trigger interrupts with microsecond precision. This makes them perfect for generating pulses, reading sensors, simulating RPM or speed signals, or scheduling tasks without blocking the loop(). In this article, we walk through…
A simple example of sending multiple integers from one board to another The I2C (Inter-Integrated Circuit) bus allows two wires—SDA and SCL—to connect multiple devices.Each device can act as a master, slave, or both. In most projects, one board sends…