Project #15: Environment - Geiger - Mk33

Project #15: Environment - Temperature and Humidity - Mk31

A dual-slider ESP32 project that controls LED blink speed in real time using two analog slide potentiometers and a toggle switch with live LCD feedback.

Fermion: SHTC3 Temperature and Humidity Sensor

This project transforms basic components like LED strips and an Arduino into a professional-grade arcade experience

The OBP40 is an open, cost-effective marine multifunction display, ideal for DIY boat projects and sensor visualization. It's based on the CrowPanel 4.2 with an e-paper display and an ESP32-S3, 8 MB Flash, and 8 MB PSRAM. The system displays numeric and graphical pages with user-selectable values ​​and trends and is operated via buttons. Power is supplied via 5V USB-C. A LiPo battery pack with deep discharge protection and a magnetic dock enables mobile operation. Data communication includes NMEA2000, NMEA0183, 2.4 GHz Wi-Fi, and I2C/1Wire via an expansion port – perfect for integration with onboard electronics and sensors. The open-source firmware is customizable and can be deployed via Wi-Fi or USB. Comprehensive documentation, Telegram support, and wiring diagrams facilitate replication. This makes the OBP40 a flexible, expandable display module for boat data visualization and DIY marine electronics.

The three displays are with I2C communication protocol and are controlled by a single microcontroller, but with the help of an I2C multiplexer module.

The vintage Epson PX-4 and PX-8 computers have small LCD screens, with low contrast. This device fixes that problem.

It contains animated souls inside. The soul is always moving, always trying to escape from the pendant.

Overview of the basic properties and characteristics as well as a detailed description of the internal components.

Project #30 - UNIHIKER - MEMS CH4 - Mk06

Using the LVGL library and SquareLine Studio, I created a visualization that is not only functional, but also aesthetically enriches any audio system.

ESP32 controls an LED via Nextion touch display. Buttons trigger glow, fast blink, slow blink, or turn off using serial events and non-blocking logic for smooth, real-time control.

Find out how to use Elecrow's 1.28” round CrowPanel IPS touchscreen with an ESP32 and microPython in this article. I explain in detail the setup steps, the necessary connections and the libraries to use to get the most out of this innovative screen. You'll also learn how to display images, text and graphics on this touch screen, while exploring the possibilities offered by ESP32. Whether you're a DIY enthusiast or a curious developer, this article will guide you through every step to make your project a success. Don't miss this opportunity to discover a new tool for your electronic creations!

A simple motion-detection system that changes the RGB LED color based on movement detected by the K10’s AIRecognition module.

Real-time meeting room status, scheduling, microclimate and inormational panel — built on Elecrow CrowPanel.