OLED

Urban areas are now affected by acoustic disturbances; major Indian cities such as Mumbai, Kolkata, and Delhi rank among the noisiest in the world, driven by dense traffic, construction, festivals, and industrial activity. Extended exposure to these noise levels leads to health issues, including disturbed sleep, increased stress, cardiovascular risk, hearing damage,…

"Is it going to rain, or should I leave the windows open?" we would have asked ourselves numerous times. Now the weather is clear, but sometimes the rain will suddenly start pouring. The standard weather forecast application may give you accurate forecasts near the airport or other places, which are kilometres away from us, but it will not give us accurate forecasts…

Pune, India — July 2026. EWskills, the Industry focused skill-building platform for electronics and embedded engineers, has announced the launch of EWsim.io, a browser-based mixed-signal circuit simulator that executes microcontroller firmware. The tool is free to use, requires no installation, and is aimed at Engineers, students, educators, hobbyists, and Makers.Developed by the team behind…

This display can show two different images at the same time - no VR headsets, no software tricks, just pure optics. This is a two-way holographic display made by Julius Makes. The whole idea is that two players, sitting opposite to each other, should see the mystery instructions meant for the other person. Plus, they should be able to see their faces through the…

In this project, we’ll be learning how to build an  ESP32 Speech to Text system using an ESP32 development board. We’ll use an I2S MIC to record speech and an OLED display to display the converted text. In addition to the display, the text will also appear in the serial monitor. Since ESP32 cannot run a Speech recognition model locally due to its hardware…

Traditional alarm clocks have remained fundamentally unchanged for decades. The ESP32 speaking alarm clock built in this tutorial replaces the beep at a scheduled time and expects the user to interpret the reason for the beep. While functional, this approach lacks intelligence and context. Modern embedded systems enable the creation of smarter devices that…

Tired of building the same old Arduino projects like blinking LEDs, temperature monitors, and line-following robots? Now it’s time for something fun.  It’s time to turn your skills into entertainment by creating your very own Arduino game console project. Instead of just testing circuits, imagine powering up a device you built yourself and jumping straight into…

Michael Klements built this 5-inch Raspberry Pi based lab rack by scaling down his actual lab rack by 50%, making it eight times smaller while preserving full rack-mount functionality. 3D printed using just 220g of filament with precision M3 brass inserts and screws, this portable homelab fits in your backpack yet powers a complete network stack. The setup includes an OpenWrt router running on…

A recent project showcases Reticulum, a cryptography-based networking stack designed to build a decentralized, infrastructure-independent communication network. Unlike traditional mesh systems that depend on specific radios sharing the same frequency, Reticulum abstracts hardware into interchangeable “interfaces.” Whether the link is LoRa, Wi-Fi, Ethernet, or packet radio, the protocol…

By Ann Theressa Babu

This project presents a prototype of a solar-powered wearable vital monitoring system designed to support individuals who work for long hours in outdoor and physically demanding environments. The system uses the Analog Devices MAXREFDES117 optical heart-rate module to measure heart rate and blood-oxygen saturation using photoplethysmography (PPG) signals.

An…

By PAVAN K.

KEY FEATURES

A new open-source quadruped robot called Sesame Robot is making legged robotics more affordable and accessible. Developed by Dorian Todd, Sesame is built using an ESP32 microcontroller, 3D-printed parts, and eight low-cost servos, keeping the total build cost around $50–60. With complete CAD files, firmware, and detailed assembly guides available on GitHub, users can easily build, customize,…