3D printing
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Maker Transforms ESP32-S3 Microcontroller Into a Mini Retro TV With Touch Control and Audio Output In an era where microcontroller boards are becoming increasingly powerful, Tech Talkies recently showcased an interesting use for the versatile ESP32-S3 chip by turning it into a fully functional, pocket-sized retro television. Leveraging the display and audio capabilities of modern hobbyist hardware, the project demonstrates how low-cost microcontrollers can easily drive video playback and… |
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Autonomous Lake Mapping Catamaran Steers With Air Propellers and Not a Rudder. Two Years of Iteration An autonomous 3D-printed catamaran built by hobbyist Cy Antony Ash has mapped the depth of a lake in North Wales, the result of a two-year build. The boat carries a Deeper castable fish finder along a programmed route across Llyn Celyn, so the sonar no longer has to be cast from a rod. Instead of underwater propellers, it uses drone motors mounted above the waterline, which keeps the props… |
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Getting Started with the PUI Audio AMP2X15 Audio Amplifier Board and Speakers Adding a speaker to an embedded project is not always as simple as connecting it directly to a microcontroller or single-board computer. Most audio sources provide a relatively low-level signal, while a speaker needs more power to produce useful sound output. This is where an audio amplifier becomes important. The PUI Audio AMP2X15 is designed to bridge this gap,… |
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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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Using Over 130 3D-Printed Parts, This Six-Digit Calculator Lets Gears and a Hand Crank Handle the Logic A maker has built a calculator out of some 3D-Printed parts that can perform up to six-digit addition, subtraction, multiplication, and division that too without any complicated electronics. The machine is made from more than 130 custom designed parts and works entirely through gears, pins, levers, springs, and a hand crank. Its design is inspired by historic mechanical calculators, especially… |
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A Maker Built a 2.4GHz DIY Yagi With 1mm Brass Rods That Improved ESP32 RSSI From −65dBm to −52dBm A maker has built and tested a DIY 2.4-GHz directional Wi-Fi antenna using a 3D-printed frame and simple brass rods, showing how antenna geometry can significantly change the performance of an ESP32 wireless link. The experiment uses two ESP32 boards, with one acting as a Wi-Fi transmitter powered by a power bank and the other connected to a computer as the receiver. The receiver measures RSSI… |
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A Tiny Robot Hides Inside a 3.5-mm Poker Chip to Cheat at Roulette With 433 MHz Radio and a Custom PCB Kevin Coda of Concept Bytes Youtube channel built a tiny remote-controlled robot inside a poker chip for Mark Rober's CrunchLabs casino challenge. The project turns a standard poker chip into a miniature mobile robot that can move across a roulette table after receiving a wireless command. To make room for the electronics, the chip was hollowed out using CNC machining and its internal steel… |
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Maker Replicated the Boston Dynamics Gripper Using Daisy-Chained Servos and 3D-Printed Fingers Maker built a Boston Dynamics–style gripper using daisy‑chained bus servos and 3D‑printed fingers. Inspired by the Electric Atlas Humanoid Robots, the design focuses on a simple three‑finger layout with a rotating thumb to move around objects of different shapes. By linking multiple servos over a single UART bus, the build keeps wiring clean while allowing independent control of each joint for… |
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Python Tool Turns Your Image Into a PCB Layout in KiCad With LEDs Placed to Help Make Your Own Display Maker's Fun Duck has published a video that pairs a hands-on teardown of a commercial custom LED display with the release of an open-source Python tool, the Custom LED Display Generator, that automates the design of similar displays from scratch.
The video opens with a physical dissection of a commercial unit, the kind used for glowing logo signs.… |
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Maker Builds a 5-in-1 Cyber Deck Using an ESP32, 3.5-Inch Touchscreen Display, and Custom 3D-Printed Body Maker from the youtube channel Hacktuber recently made a custom "5-in-1 Cyber Deck" using ESP32. He demonstrated the project using two different ESP32 based development boards. One is a 2.8-inch CYD (Cheap Yellow Display) featuring an integrated touchscreen for quick prototyping, and the other is a 3.5-inch non-touch TFT display connected to an ESP32 C3 Mini, mounted onto a 3D-printed… |
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Maker Turns a Normal IR TV Remote into a Functional Keyboard Using I2C for His Handheld PC In his DIY electronics project, maker Mirza Makes transformed an ordinary TV remote into a fully functional keyboard for his portable computer. The idea was to give it a soft keyboard, the kind of ones seen in TV remotes. The build centers around a high-performance Raspberry Pi 5 paired with a compact Elecrow 5-inch TFT touchscreen display to provide a… |
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Maker Builds a Linked Portal Illusion Using Arduino Uno R4, Flywheel Launcher, and ToF Distance Sensors A maker from the youtube channel James' Programming has recently built a linked portal illusion using Arduino, 3D‑printed parts, and a custom aluminum frame. The setup uses two identical “portal” frames facing each other: when an object is thrown into one, it appears to instantly emerge from the other, creating a convincing real‑time portal illusion without any video tricks. … |
