A small Geiger counter, an ESP32, and a custom driver – that’s all you need to detect radioactive radiation. In this article, I show how to connect the RadiationD-v1.1 board, count pulses, calculate CPM and µSv/h, and easily integrate the sensor into your own projects.

Following the theoretical foundations of LoRa radio technology, this article presents its practical implementation. After an overview of the most important LoRa chips from Semtech, I introduce a driver for the SX1262 and a practical tool for conducting initial LoRa experiments.

This article explains the technological foundations of LoRa radio technology. The functionality of Chirp Spread Spectrum (CSS) modulation is described in detail. It highlights how the parameters Spreading Factor (SF) and Bandwidth (BW) control the transmission.

Elecrow has revised the CrowPanel Advance 7.0 display, addressing the biggest criticism of the first version: The backlight can now be controlled via PWM. This article shows the technical changes and demonstrates how to control it using ESP-IDF and LVGL.

An old Bodet BT 6.30 flip clock gets a second chance! What started as a cheap find on a classifieds site turned out to be a real DIY adventure. A scratched front, a broken logo, and charred components on the inside. I'll show you how I not only visually restored this slave clock but also brought it into the 21st century with an ESP32.

A lightweight library for the ESP32 for dynamic configuration of Wi-Fi access data. Implements a web server & captive portal for user-friendly provisioning. This allows the SSID, password and time zone to be transferred to the ESP32 without a special app.

This guide will show you how to install the Lyrion Music Server (formerly Logitech Media Server) on a Raspberry Pi 5. This version of the server uses an NVMe SSD instead of the standard SD card, making it extremely powerful. I have also housed it in a retro-style case.

The ESP32 weather station is now over a year old. So it's high time for an update. I have therefore spent the last few weeks developing a completely improved version of the weather station. I would like to present the changes to you in this article.

How can you control higher loads such as LED strips with the ESP32 when a single GPIO pin can only deliver a few milliamps at 3.3 V? In this article, I take a practical look at different transistor solutions for switching higher currents with the ESP32. I compare a Darlington transistor with three MOSFETs and show, which types are suitable for logic-level control.

The ESP32-S3 7 inch display from Sunton is one of the few boards that combines a modern microcontroller with a comparatively large display. I will show you how to get it up and running with just a few steps.