Latest Shared Projects on Elecrow | Discover New Innovations

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Learn how to configure two HC-05 Bluetooth modules as a Master-Slave pair and establish reliable wireless communication between two Arduino Uno boards. In this project, the Master Arduino remotely controls the direction and speed of a 12V DC motor connected to the Slave Arduino.

Wireless Communication Between Two Arduino Boards Using HC-0

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Rachana Jain

Rachana Jain

23

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This Elecrow Starter Kit saves time, eliminates wiring problems, and makes learning electronics both simple and enjoyable.

Elecrow All-in-One Arduino Starter Kit Review - 20 Projects

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Mirko Pavleski

Mirko Pavleski

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This project is a compact embedded controller designed for an automatic touchless soap dispenser. The PCB is built around the nRF52840, providing Bluetooth Low Energy (BLE) connectivity for remote control, configuration, firmware updates, and communication with external BLE devices.

Smart Touchless Soap Dispenser Controller with Custom PCB

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Himanshu Dada

Himanshu Dada

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Today I am going to show you how I made a "Digital Roulette Wheel" by combining ESP32-C3 with the classic CD4017 CMOS decade counters

DIY LED Roulette Wheel | ESP32 C3 Project

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tarantula3

tarantula3

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The generator allows you to create STL files for 3D printing a fully customizable electronic enclosure. By changing the parameters in the source file, you can adjust the enclosure’s properties and adapt it to the specific requirements of your DIY project. The parametric generator is based on an OpenSCAD file in which you can modify parameters such as the enclosure dimensions, the position of the feet, the size and placement of ventilation openings, wall thickness, corner radius, and many other features. As the final output, the generator produces separate STL files for the top and bottom parts of the enclosure, ready for 3D printing.

Printable enclosure generator for electronic devices

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GrzegorzSz

GrzegorzSz

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We recently wrapped up a project for a client who needed a compact, battery-powered weather station that could push temperature, humidity, and pressure data to a mobile app.

Building a BLE Weather Station with ESP32: A Technical Walkt

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Himanshu Dada

Himanshu Dada

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This ESP32-C3 Color Detector demonstrates how accurate and efficient color recognition can be achieved using a dedicated TCS34725 optical sensor. With real-time RGB detection, instant LED feedback, and a wireless smartphone interface, the project provides a practical and low-cost solution for a wide range of embedded electronics applications.

ESP32-C3 Color Detector with TCS34725, Real-Time RGB Detect

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Mirko Pavleski

Mirko Pavleski

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Turn your manual lathe into a gearless threading machine. ESP32-S3 Electronic Lead Screw controller PCB with touchscreen: feeds, metric/imperial threads, and divider mode. Open source, fully documented, video guide included.

Electronic Lead Screw for Lathe

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Juan Francisco Sánchez Massadi

Juan Francisco Sánchez Massadi

90

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How to build a highly reliable, automated Flood Protection System using an ESP32 microcontroller and a Telegram Bot for real-time remote monitoring and control.

DIY ESP32 Telegram Flood Protection System - Smart Home Auto

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Mirko Pavleski

Mirko Pavleski

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Door access control By Qr code reader by e-paper (No battery)

Door access control witch E-paper QR-code reader

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SEKSAN PINTAPRASAHT

SEKSAN PINTAPRASAHT

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2D QUANTUM COMPUTER / ROOM-TEMPERATURE MAGNETS Hardware of a 2D quantum processor operating at room temperature.

QUANTUM COMPUTER - 2D .PCB ART (Gabber Burgundo )

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Gabber Burgundo

Gabber Burgundo

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It uses free API key with Live ADS-B data, presented in a beautiful visual display with smooth animation, and a custom-built radar interface.

Real-Time Air Traffic Radar using ESP32 + ADS-B Data

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Mirko Pavleski

Mirko Pavleski

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Building a Simple Industrial Gas Monitoring System

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SUCH Gas Sensor

SUCH Gas Sensor

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This project demonstrates how to build a real-time GPS tracker using the Heltec WiFi LoRa 32 V4 and the REYAX RYS352A GNSS module. The tracker hosts its own web interface, allowing any device on the same Wi-Fi network to monitor live location and travel history directly from a browser. The project processes NMEA data locally, displays live coordinates on the onboard OLED, and visualizes the current location and travelled path on OpenStreetMap without relying on cloud services.

Build GPS Tracker using RYS352A GNSS Module and Heltec V4

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Rachana Jain

Rachana Jain

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After a simple calibration process, the laser beam points extremely close to the desired target, making it possible to find many deep-sky objects within seconds using binoculars or a telescope.

DIY Green Laser Night Sky Object Finder

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Mirko Pavleski

Mirko Pavleski

134

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Build an ESP32 water quality analyzer that combines pH, conductivity, and turbidity sensors to assess river pollution.

Build a Water Quality Analyzer From ESP32

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Lucas Soares

Lucas Soares

486

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