community news
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This DIY Video Converter Uses an RP2350 to Turn Vintage TTL RGB Signals Into DVI-Compatible Video Before VGA became common, many computers used TTL RGB video to send digital colour signals to their monitors. Today, finding a compatible monitor for this older hardware can be difficult, making it harder to use and restore vintage computers. A new DIY project by Charlysan offers a solution with an RP2350-based TTL RGB to DVI converter. It captures the video output from older computer hardware… |
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The Negotiator II: A PCB Business Card Built to Unlock 48V Power Delivery From Any USB-C Charger Electronics and mechanical engineer Anas Malas has redefined networking hardware with The Negotiator II, a smart printed circuit board (PCB) business card that doubles as a portable USB Power Delivery (USB PD 3.1) lab power supply. Measuring just 2 mm thick, the wallet-sized card features nearly 200 surface-mount LEDs, dual USB-C ports, and live telemetry displays for voltage, current, and… |
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This $2 ESP32-C3 Uses Flash Storage to Build a DNS Ad Blocker for 140,000+ Domains With Just 50 KB RAM The ESP32-C3 AdBlock is an open-source project that turns a low-cost ESP32-C3 microcontroller into a DNS-based ad blocker and tracker system. DNS helps devices find the IP addresses of websites and online services. This project checks DNS requests against a blocklist of known advertising and tracking domains. If a domain is blocked, the ESP32-C3 returns 0.0.0.0 instead of its real IP address.… |
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Maker Built a DIY ESP32 Security Camera With a Picture Frame Display and Shared the Custom Firmware Building a custom, low-cost home security setup no longer requires expensive commercial hardware or subscription fees. Using two inexpensive ESP32 microcontroller boards, HVT Lab and Huy Vector from Youtube recently built a fully functional, self-contained wireless video surveillance system. The setup features a dedicated ESP32-CAM module mounted at an entry point such as a front gate which… |
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This Open-Source 68008 DIY Computer Runs CP/M-68K BASIC and Custom Programs Using a 3-IC Lite Design The 68k-MBC is a homebrew single-board computer built around the Motorola 68008 processor, running at 8 MHz. What makes it interesting is that it can be built in two versions, Lite and Full. The Lite version keeps the hardware very simple, using three main ICs: the 68008 CPU, a PIC18F47Q10 microcontroller, and SRAM. It supports 128 KB or 512 KB of RAM and can run CP/M-68K. The Full version… |
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This STM32N6 Turns Speech Into Text Offline Using Its NPU and a 7.2M-Parameter ASR Model The STM32N6 is being used to run an offline speech recognition system that can turn spoken English into text without a network connection. The project runs on the STM32N6570-DK, using its onboard microphone to capture speech and its display to show the recognized words. This system is designed to recognize different English words. At the core is the STM32N6's Arm Cortex-M55 and its ST Neural-… |
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ASUS UGen AI League Hackathon Open Worldwide, with USD 20,000+ in Prizes The 2026 ASUS UGen AI League Innovation Hackathon is inviting participants worldwide to build AI projects, with total prizes of over USD 20,000. The competition is organized by ASUS, with Intel and Hailo as co-organizers. The Stage I submission period runs until October 14 at 17:00 (Taipei time), and the event runs through December 2026. Participants aged 18 or older from any country… |
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Built a Compact DIY OLED Keychain Gadget Powered by a Rechargeable XIAO ESP32-S3 Microcontroller DIY electronics enthusiasts are finding creative ways to shrink powerful microcontrollers into portable, daily-carry gadgets, and custom electronic keychains have quickly become a favourite project. Designed around the ultra-compact Seeed Studio XIAO ESP32-S3 board, this minimalist build by Tech Talkies combines an interactive 1.3-inch OLED display, a tiny LiPo battery, and a power slide… |
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This ESP32-S3 Real Life Color Picker Brings the Digital Eyedropper to the Real World With RGB and HEX Values Tech Talkies Youtube channel has built a handheld color picker using the ESP32-S3 that can scan the color of a real-world object and show its RGB and HEX values on a small display. Users can point the device at a surface, capture its color, and see the result without relying on a phone camera or computer. This makes it useful for designers, makers, artists, and anyone who wants to quickly… |
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Open-Source Pocket Tank Runs a 14.3M-Parameter AI Model on an ESP32-S3 to Give Virtual Fish Their Own Brains Pocket Tank is an open-source virtual fish tank that uses a small AI model to control its virtual fish. It runs on an ESP32-S3 and creates a small aquarium where fish can eat, explore, rest, follow other fish, play, and interact with each other. Each fish has different values such as hunger, energy, curiosity, stress, boredom, and trust, which can change how it behaves. The project was created… |
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This DIY Open-Source mmWave Presence Sensor Features ESP32-C6 With Precision 2D Spatial Tracking Traditional infrared presence sensors are cheap, but unreliable for smart homes, often turning off lights if you remain still for even a few seconds. Millimeter-wave (mmWave) radar modules offer a far superior alternative by detecting micro-movements like breathing and even tracking a person's exact 2D position in a room. However, commercial mmWave presence sensors can cost anywhere from $40… |
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FeroFlyF405: An Open Source Drone Flight Controller Designed From Scratch on the STM32F405, With INAV Ported FeroFlyF405 is an open source flight controller built around the STM32F405 microcontroller and running INAV firmware. It was designed from scratch by a maker named Farhan, who shared the hardware files on GitHub and documented the build in a video walkthrough.
The board has an LSM6DSL IMU, a DPS368 barometer, 12 motor outputs, a CAN bus, an I2C port… |
