PC-B merry! Spruce up your holiday attire with California STEAM's ATtiny202-controlled, LED-lit wreath earrings.

Todd E. Stidham's BuzzKill board adds a synthesized voice to a simple voltmeter that seems to panic as the measured voltage rises.

NanoBASIC UNO provides a BASIC interpreter for ATmega328P-based boards, complete with GPIO access.

Mage Control Systems' CANBOB is an open source breakout board that enables USB or SPI to CAN communication using the MCP2515: github.com/Mage-Control...

YouTuber VITOR'S INVENTIONS built a low-cost, ATmega2560-equipped "functional" bartender robot that could mix and pour him drinks.

Tristan Fogt's ATmega328-controlled, 96-channel DIY pipetting machine reproduces the functionality of a $18K commercial system for only a couple hundred dollars.

Looking for a fun little prank over the holiday break? Want to annoy your guests? Capable of being placed anywhere, this ATtiny85-powered "digital bugger" chirps like a cricket in intervals only when it's dark: www.reddit.com/r/arduino/co...

Kevin Noki built a custom Commodore 64 laptop from scratch because Commodore never did.

Elevate up your holiday outfit (or decorate your Christmas tree) with Mihai Popa's LED-illuminated, PIC10F322-controlled PCB earrings.

Arnov Sharma's Giant NeoPixel is a SAM D21-driven, 30x-scaled version of the popular WS2812B RGB addressable LED that works just like its real counterpart.

This PCB will surely make spirits bright! James Saunders built an ATmega328-based, MIDI-triggered Christmas tree that syncs its LEDs to whatever music he plays: www.reddit.com/r/arduino/co...

ButCom is a simple 1-wire communication protocol designed for microcontrollers like the ATtiny85.

Turn @adafruit.com's SAM D51-powered NeoTrellis M4 into a fun and festive soundboard featuring 32 different holiday audio clips: blog.adafruit.com/2025/12/07/c...

Powered by an @adafruit.com Feather M0 Express (SAM D21), this open source environmental monitor can be customized to show exactly the air quality and weather information you want on its color LCD display.

YouTuber DIY Engineers built an ATmega2560-controlled, six-axis robot arm from scratch mainly out of 3D-printed parts.

MH-EDU-Electronics' LadderDAC is an MCP6002-equipped, hands-on Arduino shield that lets you build your own 8-bit R-2R Ladder DAC.

An ATtiny85 sits at the heart of this breadboard-friendly power meter that lets you keep track of your project's energy usage.

Clem Mayer rebuilt the 3D Chameleon MK4 3D printer color changer from the ground up, replacing its legacy electronics with an ATtiny3226 controller, TMC2209 drivers, thermistor-monitored cooling, and clearer visual feedback via LEDs: community.element14.com/challenges-p...

Fin Mead developed an AVR-IoT Cellular Mini-based system that monitors river water levels to detect flooded walking paths and cycleways, sending data to a web app in real-time.

Chen Liang made a minimalist power monitor out of only three components: an ATtiny85-based Digispark, an INA219 current sensor, and an OLED breakout board.

Decorate your desk this holiday season with Hackable Platforms' ATmega328-controlled LED Christmas tree PCB.

This ATmega328-controlled sundial brings its own sun in the form of an LED so it can work 24/7.

Build your own low-cost, ATmega8-based soldering station with precise temperature control and a large LCD display.

Blokas' Pisound Micro is a SAM D21-equipped Raspberry Pi HAT for audio hardware projects.

Bring festive cheer wherever you go with David Capper's light-up, ATtiny13A-driven Christmas tree pin badge.

As a DIY alternative to GPS, Clif Barnes created an ATmega2560-controlled TFT display for motorcycle directions and other riding notes.

As a DIY alternative to GPS, Clif Barnes created an ATmega2560-controlled TFT display for motorcycle directions and other riding notes.

Daric Gill's The Translation Machine is an ATmega328-powered, motion-reactive sound sculpture constructed with the help of bees.

Mirko Pavleski repurposed an old black and white TV into an ATmega328-driven digital clock that any retro tech enthusiast would love.

Redditor Legend_of_the_Wind's ITS1A thyratron tube clock beautifully shows the time in a soft green glow: www.reddit.com/r/electronic...

Taifur's LumiDial is an analog-style, ATmega328P-controlled wristwatch that displays hours and minutes using 72 SMD LEDs instead of physical hands.

Patrick Souty added an ATmega328-based tachometer to his mini lathe that uses a line tracking sensor and 7-segment display to show RPMs.

Mohammed Nihal's cloud-shaped, ATmega328-controlled desktop device uses sensor data to predict the likelihood of acid rainfall before it occurs.

Michael Hansen overcame the limitations of toggle switches by creating an alternative ATtiny10-based solution for battery-powered devices.

The NeuralNetwork library lets an 8-bit ATtiny85 run an RNN that performs handwritten digit recognition with just 512 bytes of memory.

@e14community.bsky.social member 'fyaocn' implemented an Arduino Zero (SAM D21)-based intelligent ambient lighting control system for vehicles that integrates multiple lighting scene modes, brightness adjustment, proximity sensing, and other functions: community.element14.com/challenges-p...

Andrzej Karwowski has managed to successfully create and run AVRPascal IDE natively on FreeBSD/GhostBSD.

Channel your inner Clark Griswold this holiday season and decorate your home with custom, PIC12F675-controlled icicle lights.

Simon Carter's 3D-printed, ATmega328P-powered FM radio features built-in text-to-speech functionality for visually-impaired users.

Polykit has added a new eight-voice analog polyphonic synthesizer to its lineup of electronic instruments — completely open source and controlled by an ATmega2560.

Image recognition with an ATtiny85?! Giorgos Xou proves you can run an RNN MNIST model on the MCU via its 512 bytes of EEPROM.

Leon Hillmann designed an ATmega32U4-controlled DIY monophasic TENS device, specifically to help a relative with hand problems.

Institute of Science Tokyo researchers developed a system that uses LEDs to wirelessly power indoor IoT devices, both in dark and bright lighting conditions.

Sander van de Bor's Duonacci Pendant merges engineering and mathematics into a bicolor LED necklace that features a dazzling display of color and customizable patterns driven by an AVR32DA48.

Nelson Rossi Bittencourt's PicArd is an ultra-low-cost, Arduino-based USB programmer for PIC® MCUs.

Nova Radio Labs' Novaduino Environmental Sensor Kit is an Arduino-programmable air quality and weather monitoring solution.

MIT researchers have developed a robotic system that builds large structures from voxel blocks: blog.adafruit.com/2025/11/19/r...

Mark Wilson's AMeagreBall recreates the iconic Amiga Boing Ball demo using an ATmega328-based Arduino UNO with a touch LCD shield.

Developed by Northwestern University engineers, VoxeLite is an ultra-thin, lightweight, flexible wearable device that brings "human resolution" touch sensations to screens.

Phil Weasel's YUKARI V2 is an AVR® DA-based, DIY Bus Pirate-like tool designed for makers.