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ESP32 S3 Dev board
Breeze Jun 15,2026
An ESP32 S3 dev board with a Neopixel, an AMS-1117-3.3V regualtor, USB, TX and RX, and various breakout pins for 3.3V, GND, and GPIOs.This was my first PCB released back in 2024.Made in kicad 8.
2026 KiCad PCB Design Contest DIY ESP32
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rdino 2040
Jun 15,2026
Introducing the RDINO-2040For years, Arduino Uno form factor enjoyed widespread popularity thanks to the vast range of accessories available for it. However, with time, robotics and internet of things applications outgrew 8-bit MCUs used in Uno boards. This problem was solved by designing a new board with the same dimensions, while providing a modern multi-microcontroller architecture to cope with any task ahead of it.Why Two Microcontrollers? Reasons Behind the Design ChoiceWhen it comes to com...
2026 KiCad PCB Design Contest Arduino Development board
915
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Separate mechanical numpad via c-type usb
M Jun 14,2026
Separate mechanical numpad via c-type usbThe Project: Custom designed mechanical numpad for laptops and keybaoards without numpad -> an extension via c-type usb cableArchitecture & Controller:Core Microcontroller: Arduino Pro Micro (ATmega32U4 chip)Native USB HID handles direct hardware-level keyboard emulationmapping keypresses directly to standard OS keystrokes without external driver softwareLayout: Expands past my previous 4x4 matrix into a comprehensive 21-key cluster, fully accommod...
2026 KiCad PCB Design Contest Arduino Mechanical Keyboard
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ESP32 C3 Super Mini WiFi Fix - 3 Methods That Work
Adhikari Jun 11,2026
Hi everyone! I’ve recently started working with a tiny, super affordable microcontroller board called the ESP32-C3 Super Mini, which comes with both Wi-Fi and Bluetooth. Part of the ESP32 Super Mini series, this little board has quickly become a go-to for makers and developers, since it squeezes the full power of an ESP32 into a thumb-sized package.If you’re subscribed to my channel, you would have probably seen me using it in my last three projects. It’s single-core, compact, lightweight, and c...
Arduino ESP8266 ESP32
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DIY Miniature X-Ray Machine using a TV Vacuum Tube DY86
Pavleski Jun 11,2026
An X-ray machine (or radiograph) is a quick, painless medical test that produces images of the structures inside your body—particularly your bones. It is one of the oldest and most frequently used forms of medical imaging. The process is based on a specific type of high-energy electromagnetic radiation. An X-ray machine produces a concentrated beam of X-ray photons. This beam is aimed at the specific part of the body being examined. As the rays pass through your body, different tissues abso...
DIY USB Atmega
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paper tape reader
Supermagnum Jun 10,2026
Paper Tape ReaderRepository: github.com/Supermagnum/paper-tapeDesign and documentation by Jürgen Müller / e-basteln. This repository contains the firmware, PCB design files, and manufacturing data for the manual optical paper tape reader described on the e-basteln Paper Tape Reader pages.OverviewThis little manual paper tape reader is easy to build and operate. It connects to any modern computer via USB, and performs well with all kinds of 5 to 8 bit paper tape, including translucent paper mater...
Arduino Board paper
353
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Arduino Pro Micro GAMEPAD
GM Jun 05,2026
This project is a custom-designed, handheld gaming controller built around an Arduino Pro Micro. It leverages the ATmega32U4 microcontroller, which is chosen specifically because its native USB support allows the device to be instantly recognized by a computer as a standard Human Interface Device, functioning exactly like a plug-and-play keyboard or joystick without needing intermediary software.For proportional movement and camera control, the controller features dual analog thumbsticks. These ...
2026 KiCad PCB Design Contest Arduino
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rcfw Arduino Nano shield
Jun 04,2026
This is a companion shield to my rcfw firmware (see link).It can take one Arduino Nano or Every (or a compatible clone), two ESCs, one servo, one ELRS receiver (with optional power control via Arduino), two sets of two LEDs (via transistor) and I2C. Power from the second ESC is broken out to a header, allowing supplying power to three other devices. To use this as a second servo manually solder a bridge to VCC of the other ESC.Models this has been tested with include RC Benchy, Arctic Tinyrider ...
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Simple SDR Receiver Using 2x NE612 - Dual Conversion, Superheterodyne (0.1–30 MHz)
Pavleski Jun 03,2026
 SDR (Software Defined Radio) is a radio system in which most of the functions of a classic radio (filtering, demodulation, tuning, AGC) are performed by software instead of hardware. The hardware serves mainly as a receiver and signal converter, and then the computer processes the signal. The main advantage is flexibility: with the same device you can listen to AM, SSB, FM, DRM and other signals just by changing the software. The disadvantage is that it requires digital processing and ofte...
Arduino ESP8266 Commodore
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Trying_out_all_features_of_XIAO_ESP32S3_SENSE
Jun 03,2026
The XIAO ESP32S3 SENSE adds the following features to the XIAO ESP32S3:・Camera・Microphone・SD driveIt also features external interfaces such as I2C, I2S, and SPI.I sought to demonstrate what challenges arise when using these features simultaneously and whether they can be resolved.Following List is the features that I implemented.・Display function (SH1106)・Control of DSP radio (RDA5807FP)・Recording (WAV files) and playback of DSP radio output to an SD card・Recording camera images to an SD card (J...
2026 KiCad PCB Design Contest Arduino ESP32
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