Feb 24, 2026, 9:57 AM
Complete Deep Learning tutorial for real time digit recognition on the ESP32 P4: Following the creation of custom MNIST training data, the PyTorch training and the Int8 quantization via ESP PPQ, the finished model evaluates drawn digits live on a touch display as a bar chart.
Feb 16, 2026, 7:45 PM
Review of the Waveshare ESP32-P4-Module-DEV-KIT-C featuring a large 10.1" display in a compact Raspberry Pi form factor. Includes a detailed step-by-step guide for LVGL GUI development using ESP-IDF and pure Espressif components: from MIPI-DSI initialization and touch integration to the final application.
Jan 31, 2026, 3:18 PM
A compact slave clock controller with ESP32-C3 and DRV8871 H-bridge. The circuit synchronizes automatically via Wi-Fi and NTP, has a battery backup for power failures, and costs only a few euros to manufacture. Complete instructions with circuit diagram, components, and finished code.
Jan 27, 2026, 8:42 PM
The new CrowPanel Advance 7" uses the ESP32-P4 for native MIPI-DSI interfaces. However, the test reveals not only high computing power but also a design problem with the co-processor: Why the hardware architecture of the ESP32-C6 becomes a dead end for ESP-NOW and for whom the board is still worthwhile.
Dec 29, 2025, 10:18 AM
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.
Nov 14, 2025, 6:03 PM
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.
Nov 12, 2025, 8:26 PM
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.
Oct 30, 2025, 9:41 AM
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.
Aug 30, 2025, 8:34 PM
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.
Aug 14, 2025, 8:04 PM
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.