ESP32
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How to Build a Smart ESP32 Noise Pollution Monitoring System with IoT 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,… |
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This Maker Turned a Simple Stick Into a POV Display Using a Teensy 4.1, ESP32 and Fast APA102 LEDs YouTuber Zachary McCune from Corridor Crew has turned a simple fire spinning hobby into an ambitious engineering project that can create images in the air while spinning. The project uses the principle of persistence of vision (POV), where rapidly changing lights appear to form a continuous image when moved quickly through space. Instead of using a conventional screen, the device displays an… |
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ESP32-CAM AI Vision Assistant Pendant for the Visually Impaired Moving through unfamiliar environments is a challenging thing for visually impaired people. We have a lot of solutions, from sticks to obstacle-avoidance handheld devices on the market, to solve their problem. In the DIY world, a lot of makers have built obstacle-avoidance sticks using Ultrasonic sensors, IR sensors or even a PIR sensor and different variations of… |
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TICKEY Is a Small Clip-On Badge With an E-Ink Display That Can Show 48 Colors, Built on an ESP32 TICKEY is a compact clip-on gadget that combines a 3.7-inch, 720 × 480 color e-paper display with an ESP32-S3 microcontroller, Wi-Fi, Bluetooth and NFC. Instead of behaving like a normal LCD or OLED screen, its e-paper display is designed to keep a static image visible without continuously consuming display power. Users can show pixel art, photos, digital badges, QR codes, notes or personal… |
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A Drone That Tracks Its Leader Using Four Microphones and an ESP32, No GPS or Camera Needed Researchers at Duke University's General Robotics Lab have built a system that lets one drone follow another using nothing but the sound of its rotors. The project, called SonicFly, estimates a leader drone's bearing and distance from onboard audio alone, without GPS sharing, cameras, radio links, or any active signal exchange between the two aircraft. … |
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How to Build an AI-based Air Quality Monitoring using ESP32 Air is a necessity for us human beings, so monitoring it is important. Air quality is monitored in terms of the Air Quality Index(AQI), a single-number scale used to tell how polluted the air is and what health effects it might cause. Particulate Matter is the microscopic solid or liquid which is present in air in the form of dust or smoke. Particulate Matter is the… |
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DigiKey and Engineering Influencer Shawn Hymel to Host Webinar and Video Series on Reinforcement Learning with Balance Bots THIEF RIVER FALLS, Minn., USA — DigiKey, the global distribution leader of electronic components and automation products, is hosting a webinar with Shawn Hymel: “Train a balance bot with reinforcement learning,” scheduled for Thursday, Aug. 13, 2026, at 10 a.m. CDT. The free 90-minute virtual event will be a hands-on robotics and AI workshop that will teach attendees how to get started in the… |
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Engineer Turns Mini Fridge Into a SLAM-Guided Tank Robot You'd Have to Chase for a Cold Drink Engineer Dorian Todd has built a self-driving mini fridge on tank treads that can autonomously chase or flee a person and reward them with a cold drink if caught. The project replaces the fridge's standard base with a tracked drivetrain powered by Repeat Robotics Ultra Mark II brushless gear motors designed for 12 lb combat robots. Todd 3D scanned both the metal tread assembly and the… |
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ESP32-S3 Runs a 28.9-Million-Parameter LLM, Borrowing a Memory Trick From Google's Gemma Developer slvDev has published an open-source project that runs a 28.9-million-parameter language model directly on an ESP32-S3, a microcontroller that costs roughly $8. The model runs entirely on the chip itself, with no data sent to a server, generating text at roughly 9 tokens per second and outputting it to a small connected display. The achievement stands out because of how little working… |
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Quaddle Is an Open-Source Desk Robot That Can Move Omnidirectionally With Just 4 Servos Petoi, the team behind the open-source Bittle and Nybble quadruped kits, has opened early access for its next robot, Quaddle. The company describes it as a four-servo quadruped capable of walking, strafing sideways, and spinning in place, a claim that stands out mainly because of how few actuators it uses to pull it off.
Most legged robots that can… |
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Maker Builds an ESP32 Powered Spider Man Web Shooter in This Brand New DIY Project YouTuber Plentiful Props 3D has developed a functional Spider Man-inspired web shooter that combines custom electronics, 3D-printed parts, and a servo-actuated spray mechanism to fire web-like strands from a wrist-mounted wearable. The project uses an ESP32-S3 Mini development board mounted on a custom PCB to control the firing mechanism. According to the creator, the electronics package… |
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How to Build an IoT Indoor Weather Station Using CircuitDigest Cloud "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… |
