A compact DIY FIDO2 security key can be built around Nordic Semiconductor’s nRF52840, which provides the processing, native USB connectivity, and hardware-accelerated cryptography needed for secure authentication.
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Smart Laser Distance Meter Using STM32 and VL53L4CX
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As a smart digital measuring tape, it can measure distance, calculate area and volume, determine indirect height using tilt information, track maximum and minimum distances, and work as a digital spirit level. All of these functions are controlled using a single spring-return rotary knob and displayed on a 1.3-inch OLED.
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Build Your Own USB-C Power Meter
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In this project, we built a DIY inline USB-C power meter that measures voltage from 5 to 28 V and current up to 5 A. It also tracks charge and energy consumption, records minimum, maximum, and average readings, and displays a rolling 30-second graph of voltage, current, and power on a colour IPS display.
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IoT-Based Parking Space Detection System Using Raspberry Pi
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Build a smart parking space detection system with Raspberry Pi, OpenCV, and CircuitDigest Cloud AI. Capture images using a USB camera and detect vacant or occupied parking spaces instantly. This beginner-friendly tutorial includes hardware requirements, circuit diagram, source code, setup instructions, and project advantages.
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Raspberry Pi Waste Segregation System Using CircuitDigest Cloud
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Build a Raspberry Pi waste segregation system using CircuitDigest Cloud to classify biodegradable and non-biodegradable waste with OpenCV and a USB camera.
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Raspberry Pi Object Detection Using CircuitDigest Cloud
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Build a Raspberry Pi Object Detection system with Python, USB camera, and CircuitDigest Cloud. Perform real-time AI detection without TensorFlow or model training.
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Build Helmet Detection with Raspberry Pi Using CircuitDigest Cloud
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Build a Raspberry Pi Helmet Detection system using a USB camera, Python, OpenCV, and CircuitDigest Cloud AI. Learn how to detect helmet compliance in real time without machine learning model training, configure the Raspberry Pi, integrate the cloud API, and automate traffic safety monitoring for smart cities, industrial workplaces, and educational AI vision projects.
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Build a Face Detection System Using a Raspberry Pi
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Build a Raspberry Pi face detection project in Python using OpenCV and the CircuitDigest Cloud API. No dataset, no training - just flash and run. Step-by-step guide.
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Parking Space Detection System Using ESP32-CAM
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Learn to build an ESP32-CAM Parking Space Detection System that detects parking availability in seconds using cloud API, Wi-Fi, and real-time image processing.
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ESP32 2424S012C Teardown
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ESP32 2424s012C Teardown: Explore PCB layers, full FPC pinout, ESP32-C3 schematic, GC9A01 display driver, CST816D touch IC, IP5306 charger & A6165P LDO - with annotated diagrams.
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