How to build a simple Meshtastic IoT sensor grid with the ThinkNode M1 & M2 devices.

The ESP8266 NodeMCU 4-Channel Relay Module project enables easy remote control of up to four appliances in your home using Wi-Fi. By leveraging the ESP8266 NodeMCU and a simple web interface, users can control devices like lights and fans from anywhere. This cost-effective IoT solution provides seamless home automation, turning any home into a smart home with just a few clicks. Perfect for DIY enthusiasts looking to dive into the world of IoT and home automation!

The Elecrow M1 Meshtastic device has caught my attention with its unique e-paper display and solid feature set. As someone passionate about IoT, GPS tracking, and mesh network devices, I’ve put this compact node through its paces to see how it performs in real-world scenarios. In this review, I’ll walk you through the ThinkNode M1’s standout features, usability, firmware updates, and how it integrates with the Meshtastic ecosystem. Whether you’re considering this device for your next project or just curious about its capabilities, this deep dive will give you a clear picture of what to expect.

Introducing the Water Wastage Alarm System — a smart, low-cost solution for Indian households to prevent overhead tank overflows. Using an ultrasonic sensor, this system monitors the water level in real-time, activating an alarm when the tank is full. The system displays the water level on an OLED screen, signals warnings with LED indicators, and can even send SMS alerts via the SIM800L module. Not only does it save water and reduce energy bills, but it’s also affordable, easy to install, and perfect for promoting water conservation in every home. A practical and sustainable solution powered by the H2S-Dev board!

Turning the CrowPanel Touchscreen into a DIY Laptop Drawing Board In this project, I'm using the CrowPanel Advance 7" touchscreen display along with an ESP32 microcontroller to build a custom drawing tablet that communicates with my laptop. The idea is simple: when I touch the CrowPanel, the ESP32 reads the touch coordinates and sends them in real time to my computer. This allows the panel to work like a sketchboard or basic graphics tablet — perfect for quick drawings, annotations, or testing out touch-based interfaces.

Dive into my hands-on review of the Elecrow All-in-One Starter Kit for Micro:bit. See what’s really inside the box, how fast you can get started (even if you’re a total beginner), what works great and what could be improved, and why this kit just might be the perfect solution for students, teachers, makers, or anyone curious about electronics and coding!

This project presents the design and concept of a 10 cubic meter stainless steel storage tank made from grade 304L, intended for industrial and smart fluid management applications. The tank has been carefully designed to ensure durability, corrosion resistance, and suitability for integration with IoT monitoring systems. The tank structure includes a main cylindrical shell (virole), two dished heads (fonds), support cradles (berceaux), a lid (couvercle), a valve (vanne), and a custom nozzle (piquage) for input/output. It is designed to withstand varying fluid pressures and can be used in a variety of industries such as food processing, water treatment, chemical manufacturing, and agricultural storage. The CAD model has been developed using SolidWorks, employing sheet metal features and realistic welding simulations.

"A smart IoT-based system that monitors and controls temperature and humidity in real-time, combining precision, automation, and remote accessibility in one compact device."

This project is a working model inspired by ISRO's Chandrayaan-3 lunar rover mission. The purpose of the project is to help students understand the basics of robotics, obstacle detection, and wireless control using Arduino and ESP8266. The rover model replicates the concept of terrain navigation and autonomous obstacle avoidance.