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…
The BME280 is one of the easiest sensors to integrate into Home Assistant for live temperature, humidity, and pressure monitoring. In this guide, we show you how to install the sensor, flash the ESP32, configure MQTT, and view the readings…
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…
I2C is one of the simplest ways to connect multiple sensors and peripherals to your ESP32 using only two wires (SDA and SCL). When debugging a new project, the first thing you should do is scan the I2C bus and…
Send Sensor Data With Zero Assumptions • Exact Steps • Fully Reliable This guide shows exactly how to send readings (e.g., BME280 temperature/humidity/pressure) from your ESP32 to Home Assistant using MQTT. Everything is simple, direct, and tested. 1. What You…
Everything you need, zero assumptions, no missing steps This guide gets you from new board → first working program in the simplest and shortest way possible. 1. What You Need Use these items: No breadboard or extra parts needed for…
This guide shows the exact wiring, exact libraries, and tested code to read temperature, humidity, and pressure from a BME280 sensor using I2C. 1. What You Need Use one of these BME280 modules: You also need: 2. Check Your BME280…
