WiFi
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How to Build Smart Grid in IoT Using Arduino UNO R4 WIFI Electrical energy is no longer treated as an unlimited utility. Every watt consumed has a cost impact, an efficiency implication, and in many cases a safety consequence. A smart grid in IoT is not a complicated buzzword. It simply means that electrical infrastructure is monitored continuously, data is collected in real time, and decisions are made based on measured… |
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Li-Fi and FSO Startup Velmenni Raises ₹30 Crore in Pre-Series A Round Delhi-based startup Velmenni raised ₹30 crore in a pre-Series A funding round, led by pi Ventures, which also saw participation from MountTech Growth Fund-Kavachh and Apekso. The company intends to use the raised capital to help commercialize its patented light-based wireless connectivity solutions, build customized solutions for defence and enterprise, and expand globally. The… |
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Build a Speaking Alarm Clock Using the XIAO ESP32-S3 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… |
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DIY Handheld Arduino Game Console With 10 Retro Games 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… |
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Adding a Wi-Fi Camera to the LiteWing ESP32 Drone for Hobby Flights. We love tinkering with our LiteWing ESP32 drone, and this time we gave it a simple but exciting upgrade, a WiFi camera module! With this addition, the drone can now stream live video while flying, perfect for hobby flights, aerial experimentation, or just having fun seeing the world from above. On the technical side, the setup… |
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Now at Mouser: NXP Semiconductors' IW610 Wi-Fi 6 Tri-Radio SoC Elevates Connectivity in IoT Applications March 9, 2026 – Mouser Electronics, Inc., the industry's leading New Product Introduction (NPI) distributor with the widest selection of semiconductors and electronic components™, is now stocking the IW610 IoT Optimized Wi-Fi® 6 tri-radio system-on-chip (SoC) from NXP® Semiconductors. The IW610 family elevates connectivity and efficiency in next-generation smart homes and industrial automation… |
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How to Send Email Notifications from Raspberry Pi Pico using CircuitDigest Cloud With the rapid growth of IoT-based monitoring systems, staying informed about what’s happening in real time has become extremely important. Whether it’s detecting an intruder, monitoring equipment, or tracking activity, users need instant alerts without constantly checking dashboards or screens. Email notifications offer a simple and reliable way to receive detailed… |
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Reticulum : A Decentralized Networking Stack 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… |
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Rohde & Schwarz and Broadcom showcase first Wi-Fi 8 RF signaling tests, paving way for next-gen connectivity Rohde & Schwarz, in collaboration with Broadcom, will display its CMX500 multi-technology multi-channel signaling tester at MWC Barcelona 2026 with newly added Wi-Fi 8 (IEEE 802.11bn) testing capabilities. The setup at the Rohde & Schwarz booth (5A80) will validate a prototype Wi-Fi 8 device from Broadcom, showcasing physical layer features unique to Wi-Fi 8. Addressing UHR… |
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Real-Time Motion Detection with XIAO ESP32 WhatsApp Alert System This guide shows you how to build a motion detection system that sends instant WhatsApp alerts using the compact XIAO-ESP32 development board. When the IR sensor detects movement, the board immediately transmits a notification to your phone through the CircuitDigest Cloud platform. This wireless approach eliminates the need for GSM hardware or SIM cards, relying… |
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Raspberry Pi Pico Based Rain Detection System with WhatsApp Alert This project shows how to send instant WhatsApp alerts from a Raspberry Pi Pico W using WiFi and CircuitDigest Cloud WhatsApp API. The Pico W reads data from a rain sensor and, when moisture is detected, sends a notification directly to your WhatsApp. No GSM module, SIM card, or cellular hardware is required and everything works over a secure HTTPS request. The same WhatsApp notification… |
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How to Send WhatsApp Messages from Arduino Uno R4 Wifi Board In this tutorial, you will learn how to send WhatsApp messages from Arduino UNO R4 WiFi using the CircuitDigest Cloud Whastapp API. Instead of using a GSM module, SIM card, or complex WhatsApp Business API setup, this method allows your Arduino to send alerts over WiFi using a simple HTTPS request. This makes it much easier and more cost-effective to add real-time… |
