Wi-Fi
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SignalSweep: Open-Source BLE and Wi-Fi Scanner on ESP32-C5 That Can Detect AirTags, Flock Cameras and Drones SignalSweep, an open-source project published on GitHub by a developer using the handle B0z0dcl0wn, turns a Seeed Studio XIAO ESP32-C5 into a pocket-sized scanner for trackers, surveillance hardware and drones. It is licensed GPL-3.0-or-later. The C5 is the main target because it can listen to both 2.4 GHz and 5 GHz Wi-Fi alongside Bluetooth LE, and the developer argues that more cameras and… |
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This Raspberry Pi Zero 2 W Runs a Virtual Viking Dragon That Feeds on Nearby Wi-Fi and Bluetooth signals What if your virtual pet could find food from the Wi-Fi and Bluetooth signals around you? Meet Harald, a virtual dragon created by a Raspberry Pi enthusiast. Built using a Raspberry Pi Zero 2 W and a Waveshare V4 e-paper display, Harald treats nearby Wi-Fi networks and Bluetooth devices as food. Discovering new devices makes the dragon happier, turning everyday wireless activity into a virtual… |
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A Maker Built a 2.4GHz DIY Yagi With 1mm Brass Rods That Improved ESP32 RSSI From −65dBm to −52dBm A maker has built and tested a DIY 2.4-GHz directional Wi-Fi antenna using a 3D-printed frame and simple brass rods, showing how antenna geometry can significantly change the performance of an ESP32 wireless link. The experiment uses two ESP32 boards, with one acting as a Wi-Fi transmitter powered by a power bank and the other connected to a computer as the receiver. The receiver measures RSSI… |
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ESP32 Camera Dev Board Comparison: ESP32-CAM vs ESP32-S3-CAM vs XIAO Sense-Which Should You Choose?Introduction
ESP32 Cameras have become a popular choice for building low-cost wireless cameras, smart surveillance systems, and even small AI projects. But today, there are several options available, from the original ESP32-CAM to newer ESP32-S3-based camera boards and compact boards like the XIAO ESP32-S3 Sense. At first glance, they may look similar, but there are… |
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Getting Started with Arduino LVGL for ESP32 Display In this tutorial, we are going to see how you can create a custom Graphical User Interface(GUI) using LVGL and our favourite Arduino IDE. You can use any kind of microcontroller for this project; the only thing you need to do is to include the right pins in the Arduino code. Here, I’m using an ESP32-C3 based smartwatch for the demonstration. This has a display, touch, controller and… |
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ESP32-S3 Sensor Hub: 8 Sensors on a Single Compact PCB Maker MagmaBow has unveiled a high-density security development board that challenges the traditional "one sensor, one device" model. Built around the powerful ESP32-S3 module, the project successfully integrates eight distinct sensors including thermal IR, Time-of-Flight distance tracking, and dual accelerometers onto a single, compact PCB. By consolidating these components into one footprint… |
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Wireless Stepper Motor Controller with ESP32 and TMC2240 The Internet of Things (IoT) has revolutionised how we control devices, enabling seamless remote monitoring and operation over a network. This tutorial presents an innovative solution for remote stepper motor control, allowing you to precisely adjust its position, monitor its performance, and receive real-time feedback directly from a simple web browser. For those… |
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DigiKey’s Portfolio Grows to 16.5 Million Parts with Major Q2 Expansion DigiKey had a major Q2 expansion, bringing on 127 new suppliers and over 236,000 new products. Of these additions, at least 32,000 are new product introductions (NPIs) that are all in stock and ready for same-day shipping. This expansion bumps DigiKey’s total portfolio to over 16.5 million products. The list of new suppliers includes DeGirum (AI tools), Minew (IoT tracking devices),… |
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MIT Combines GaN and Silicon Chips for Faster, Efficient Electronics Researchers from MIT and elsewhere have developed a new way to combine two types of chips: gallium nitride (GaN) and silicon-based CMOS chips into a single chip. The solution is cheaper, scalable, and more energy-efficient. Gallium nitride chips are not cheap or easy to work with, but they are faster and better at handling power. Silicon chips, on the other hand, are cheap and common but lack… |
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How to send SMS using ESP32 Want instant SMS alerts from your ESP32 without relying on a bulky GSM module? Whether it's motion detection, a sudden temperature spike, or an unauthorized locker door opening, your ESP32 can now send real-time SMS notifications straight to your phone, using just Wi-Fi and a free API from Circuit Digest Cloud. … |
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Game Bub, An Open-Source FPGA Retro-Emulation Handheld The Game Bub handheld brings classic Game Boy, Game Boy Color and Game Boy Advance gaming in one open-source device. With support for original cartridges and microSD-based ROM files, it bridges the gap between physical collections and digital libraries. Fans can enjoy their cartridge collection or explore homebrew titles without needing additional flash carts. This… |
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Fusion Chime Vision, A ESP32-Based Smart Doorbell System for Modern Smart Homes Fusion Chime Vision is an advanced open-source doorbell system built around the ESP32 microcontroller platform. It replaces a conventional chime with an interactive device that displays custom messages or images on its built-in screen and captures photo and audio clips when motion is detected. With real-time video streaming and two-way audio communication, it… |
