DIY
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DIY High-Voltage Plasma Portal using ZVS Circuit A YouTuber has shared his Plasma Portal project, a high-voltage electrical engineering demonstration that combines a Zero Voltage Switching (ZVS) driver circuit, a custom flyback transformer, and a 3D-printed frame to generate plasma arcs. The ZVS circuit, built using IRFP260 MOSFETs, resistors, diodes, and capacitors, efficiently oscillates current through the… |
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ESP FLY - The Smallest ESP32 Powered Drone The ESP-FLY is a palm-sized drone powered by the XIAO ESP32S3 microcontroller, combining compact design with impressive performance. Measuring just 50 mm, its 3D-printed frame weighs only 4 grams, while a PVC alternative is also available. The drone’s custom 4-layer PCB integrates an MPU-6050 motion sensor, a 4-channel motor driver, and LEDs, all optimized for… |
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Laser Microphone - Capturing Sound Through Reflected Light A YouTuber recently showcased a homemade laser microphone, a surveillance device capable of picking up sound from a distance by analyzing how a window vibrates. Originally used in espionage, this technology converts tiny light fluctuations into audio signals, demonstrating how sound waves can be captured without placing a microphone inside a room. … |
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Enhancing Micro Robotic Arm with a Smart Counterweight A hobbyist has shared his recent project on building a micro robot arm with balanced counterweights, designed for compact yet efficient robotic manipulation. Unlike conventional designs that rely on high-torque servos, this arm uses counterweights to reduce motor strain, enabling the use of smaller, low-power servos. The project… |
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DIY Brain Scanner: A Custom-Built Cyberdeck for Meditation and Focus Tracker What if you could track your brain activity while focusing or unwinding? Maker The Civitas Universe took that curiosity to the next level by repurposing a brain scanner, designing a custom macro keypad, and 3D-printing a cyberpunk-inspired console, complete with its own power supply and interactive features. Showcasing a Cyberdeck that helps track brain activity and even gamifies meditation.… |
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Interfacing a Digital Caliper with Raspberry Pi to Measure CNC Lead Screw Accuracy A hobbyist assessed CNC lead screw accuracy by building a setup using digital calipers interfaced with a Raspberry Pi. These calipers transmit data via a 76 kbps synchronous serial protocol, requiring precise timing. Python proved inefficient, so the code was rewritten in C for better performance. The calipers output two 24-bit… |
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DIY Open-Source Oscilloscope Using a Raspberry Pi Pico and Scoppy A developer has built an open-source multifunctional oscilloscope by repurposing an old Android phone, a Raspberry Pi Pico, and a custom-made PCB that integrates all necessary components. The project leverages the Pico’s 0–3.3V ADC, which requires a robust analog front-end to accurately capture and condition signals. The custom PCB… |
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High-Speed Vector Display Using a Galvo Mirror A developer has built a laser galvo-based vector display featuring a custom signal conditioning and thermal management system that leverages a low-cost galvanometer for high-speed vector rendering. The design replaces traditional stepper motor-driven systems with a faster galvanometer that requires a ±15V drive signal. To achieve this, a custom op-amp-based amplifier… |
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DIY Multi-Directional Rolling Cube Robot with Self-Righting Design Robots come in many forms, but some can move in all directions just by adjusting their shape. Joshua Stanley, a creator on YouTube, has previously created Fred, a rolling robot with a hexagonal folding design. The creator took a different path this time and made improvements, hence the birth of Marc, a new multi-directional rolling cube. The older version is much more complex, so he… |
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Bluetooth DIY Earbud Inside a Pistachio Shell Ever thought of turning a pistachio into a working AirPod? Well, a creative Penguin DIY just fixed earbuds into pistachio shell, by dismantling the earbuds, reducing their size, and fixing all the components into the same miniaturized board that will fit into a pistachio shell. The process wasn’t easy. He had to meticulously remove, resize the board, and solder each tiny part onto the… |
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Hybrid Power Management System with Ideal Diode Technology A YouTuber has developed a combat suit featuring a spinal battery system designed for improved power efficiency and reliability. The system includes voltage regulation, overcurrent protection, and cell isolation to prevent damage from physical impacts. The suit incorporates an "ideal diode" circuit using MOSFET-based switching… |
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How to Fly LiteWing Drone using ESP-Drone Mobile Application?Introduction
This guide covers flying the LiteWing drone using the latest LiteWing Mobile App. The new app supports both Android and iOS devices and includes enhanced features like Height Hold mode, battery monitoring, emergency stop, and improved flight controls. The app is based on the Crazyflie 2.0 protocol and supports not only LiteWing drones but also other mini drones that use the… |
