ESP32
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This DIY Voice Recorder Uses AI to Turn Spoken Ideas into Summarized Notes A maker recently built a compact portable voice recorder designed specifically for capturing ideas before they are forgotten. Instead of relying on a smartphone app, the project focuses on a dedicated hardware workflow built around an ESP32, combining local audio recording with AI-based transcription and summarization. The device records audio directly to an SD card, provides onboard playback… |
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How to Do Helmet Detection with ESP32-CAM Using CircuitDigest Cloud Think of a busy road where hundreds of riders pass every minute, some wearing helmets, many not, and imagine trying to monitor all of them manually. It’s almost impossible to keep track in real time. Now imagine a small device quietly watching the scene, capturing an image with a single trigger, and instantly telling you whether safety rules are being followed. That is exactly what this ESP32-… |
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ESP32 Speech-to-Text using Wit.ai 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… |
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Smart WLED Clock with RTC, PIR, Audio feedback and Environmental Monitoring The integration of addressable LEDs with the WLED firmware has revolutionized DIY lighting projects, allowing for complex visual effects with minimal to no coding. However, most standard WLED-based clocks face significant limitations, such as time-drift during internet outages and continuous power consumption regardless of room occupancy and no alarms. To address these issues, this… |
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ESP32-Powered Laser Projector Brings Retro Vector Graphics Back to Life A new DIY laser projector project from breq.dev is getting attention in the maker community for mixing old-school vector graphics with modern embedded hardware. Built by Brooke Chalmers and Mia Kiesman, the system uses a pair of galvanometer mirrors to steer RGB laser beams and draw graphics directly in the air. Instead of using a normal display panel, the projector creates smooth vector-style… |
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How to Do Object Detection With ESP32-Cam Using CircuitDigest Cloud This tutorial shows you how to build a real-time object detection system using the ESP32-CAM module and the CircuitDigest Cloud Object Detection API. The system captures an image on button press, sends it to the cloud via wireless or internet connection, retrieves the identified objects with name(s), how many there were and how confident (how much certainty the algorithm has) of the object… |
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ESP32 Interactive Voice Response (IVR) System with GeoLinker Integration Nowadays, automation has become a common part of our daily lives. From simple tasks like operating a coffee machine to creating code for complex applications, many processes are now automated. However, most systems used for controlling devices depend on internet connections, mobile applications, or cloud platforms. In many places, internet availability may be poor or… |
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How to Use ESP32-CAM for Attendance System using CircuitDigest Cloud Nowadays, everything is rapidly transitioning into the digital world, from the way we communicate to how industries operate and services are delivered. Traditional methods that once relied on manual processes are now being replaced by smart, automated, and interconnected systems. Building an automated attendance system using ESP32-CAM is a practical, affordable way… |
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ESP32 Bluetooth Jammer Using Dual NRF24L01 Modules Bluetooth communication is everywhere. Due to its low power consumption, we can see it in a lot of our day-to-day gadgets. Behind the scenes, it's all about signals. Let’s explore what really happens when data is transmitted or disturbed via Bluetooth. This project is based on an ESP32 and two NRF24L01 modules, and we are going to learn how we can generate a 2.4 GHz… |
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How to activate Airtel M2M IoT SimCard with Geolinker ESP32 Airtel M2M IoT SIM Activation – Quick Overview Log in to Circuit Digest Cloud & open the GeoLinker dashboard Enter ICCID and mobile number, verify OTP. Submit KYC documents (within 7 days) KYC verified by Airtel Whitelist up to 4 numbers for SMS/Voice Table of Contents What is an Airtel M2M SIM Card? Accessing the Airtel M2M SIM Dashboard on Circuit Digest Cloud Step 1 ⇒ How… |
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Modular LEGO-Style Sim Racing Dash Box Built with ESP32-S3 Creator Xshift has designed a fully custom, modular sim racing dash box inspired by LEGO-style expandability. The idea is to create a button box where components like switches, encoders, and displays can be easily added or rearranged using magnetic mounts.. The enclosure was 3D printed and post-processed to achieve a clean finish, while the front panel was laser-cut from acrylic and… |
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Petoi Bittle X V2: An ESP32 Robot Dog That Can Even Backflip on Command Robotics just got a whole lot more exciting and a whole lot more accessible. Petoi's Bittle X V2 is a palm-sized quadruped robot dog powered by the BiBoard V1, a custom ESP32-based board that packs serious intelligence into a surprisingly compact frame. With nine degrees of freedom delivering smooth, lifelike movement, an interactive back touch sensor that literally responds when you pet it,… |
