PCB
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These ESP32-Powered PCB Badges Run Among Us and Let Hackathon Participants Build Their Own Games A simple event badge can do more than display a name. Nick Ficara designed and developed programmable electronic badges for Hack the North, a major student hackathon in Canada, after being approached by Alex, a project manager at the event. Unlike ordinary event badges that only display a name or event logo, this ESP32-powered hacker badge works as a small computer that participants can… |
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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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Barely 21 Grams, This Satellite Prototype Tracks the Environment & Motion With ESP32-C3 & Tiny Sensors A tiny satellite prototype weighing just 21 grams is showing how far small-scale electronics can be pushed when size and weight become the main design targets. The compact device, developed as a suborbital satellite prototype, measures only 28 × 28 × 33 mm and packs an ESP32-C3 Mini microcontroller, environmental sensors, an inertial measurement unit (IMU), onboard… |
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Arduino Round Segment NeoPixel Clock Digital clocks are one of the most popular Arduino projects, and most of them use traditional seven-segment displays to show the time. While these displays are simple and reliable, they usually have the same familiar rectangular shape and monochrome appearance. When I decided to build a new digital clock for my room, I wanted to create something that worked like a seven-… |
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Gerber to PCB in 30 Minutes at Your Desk: PewCB One Pairs a Laser With Vias-Ready Double-Sided Blanks A new desktop machine called PewCB One wants to bring PCB fabrication into the same room as the engineer designing it. Instead of exporting a design and waiting on a fab house, PewCB One promises to turn Gerber files into a populated double-sided circuit board without leaving your desk.
The system is built around a 20 W, 1064 nm pulsed laser that… |
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Maker Builds an ESP32 Powered Spider Man Web Shooter in This Brand New DIY Project YouTuber Plentiful Props 3D has developed a functional Spider Man-inspired web shooter that combines custom electronics, 3D-printed parts, and a servo-actuated spray mechanism to fire web-like strands from a wrist-mounted wearable. The project uses an ESP32-S3 Mini development board mounted on a custom PCB to control the firing mechanism. According to the creator, the electronics package… |
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Romu: A 15.5mm USB Development Board Built on the RP2354A Bitmerse is preparing to launch Romu, a USB Type-A development board small enough to disappear almost entirely into the port it plugs into. The project is currently listed as "Coming Soon" on Crowd Supply. It's built around Raspberry Pi's RP2354A, a variant of the RP2350 chip that pairs a dual-core Arm Cortex-M33 running at 150 MHz with 2 MB of stacked onboard flash and 520 KB of SRAM. The… |
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Building a Machine Vision-Based Robotic Assembly System Using MechArm 270 and Jetson Nano Industrial automation has revolutionized manufacturing by making production faster, more accurate, and highly consistent. Modern robotic assembly systems combine robotic arms, machine vision, motion control, and embedded control electronics to automate repetitive tasks with minimal human intervention. While these systems are widely used in industries, the same… |
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Hot Wheels Meets Embedded Engineering: Inside a 1:64 Scale FPV RC Drift Car A Hot Wheels car has been transformed into a fully functional FPV RC drift platform by YouTuber Pro Know, proving that serious embedded engineering can exist even at a 1:64 scale. The project replaces the toy’s original internals with an ESP-based microcontroller running custom firmware, paired with a purpose-built PCB that integrates control logic, power… |
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Every Pixel Has Its Own Microcontroller Imagine a display where every single pixel has its own brain. That's the ambitious idea creator bitluni set out to bring to life in a six-month engineering project. Instead of relying on a central GPU, the display turns every pixel into an independent computing node. The ultimate goal is a 65,536-core QVGA display, while the first working prototype already features 8,192 RISC-V… |
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Amphenol's Interconnect Solutions: A Technical Overview of ExaMAX, HD Express, AirMax VS, and XCede Modern server and data center design places increasing demands on the physical interconnect layer. At 112 Gbps and beyond, connectors are no longer treated as simple passive components; their design has a direct impact on crosstalk, impedance continuity, and mechanical integrity across the system. The following provides a technical overview of four Amphenol interconnect product families… |
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This DIY Pick-and-Place Machine Delivers 10-Micron Precision Assembling tiny SMD components by hand is one of the most challenging parts of PCB manufacturing. Some components, especially 0201-sized parts, are so small that accurately placing them with tweezers can quickly become a tedious and error-prone task. That's why factories rely on highly automated pick-and-place machines that can cost thousands, or even millions, of… |
