PyPortal Astronauts in Space Using CircuitPython, the PyPortal wirelessly grabs the data needed from the internet and then turns the JSON data into a total "in-space" count and the names of the astronauts!

After the Artemis II launch, have you wondered how many people are now in space? Display the current number and names of the astronauts on the SAM D51-based Adafruit PyPortal!

ADX : Industrial ATtiny1616 board, Arduino IDE Ready Industrial Arduino PLC alternative. Robust automation system with 48V Power-over-Field, RS-485, and IDC daisy-chain expansion for RP2350/CM4 By Masahiro Furukawa.

Masahiro Furukawa's ADX-1616 is an ATtiny1616-equipped, Arduino-compatible board designed for automation and industrial applications.

Easter Soldering Workshop: a Study Timer! Easter Soldering Workshop: a Study Timer!: Hello Everyone! Welcome to the IEEE Soldering Event! Today, we are building an Easter Egg Circuit that has a timer feature and an arcade game after some heav...

This ATtiny85-based timer circuit is an eggsellent way to learn how to solder.

Electric Tracked Tricycle for EMF camp At previous EMF camps I'd seen all the cool dudes zipping around EMF camp, and I wanted a piece of the action. I decided that a electrically powered, tracked vehicle would be awesome, and everybody lo...

Tony Goacher built an electric tracked tricycle, called the TrakTrike, to zip around EMF Camp in style.

The Smart Way to Protect Your Chickens from Predators Did you remember to shut the chicken coop? Automate your flock’s safety with this ATmega1284P-powered system and never worry about it again.

Ensure the safety of your flock with Vinnie Moscaritolo's ATmega1284P-controlled automated chicken coop door system.

The smart conveyor belt from Softeq uses Arduino for a robust wireless control solution | Arduino Blog As a leading digital transformation and software engineering company, Arduino system integrator Softeq Development Corp. is a proven innovator in the industrial space – working with clients to deliver...

This smart conveyor belt system uses a SAM D21-based Arduino MKR WiFi 1010 for wireless remote control and intelligent status updates.

AgGPS332Clock Several year ago I acquired a broken Trimble AgGPS332 receiver (vintage ~2005). It sat gathering dust in a wardrobe for a long time before I finally squeezed a clock into it.

Mark Wilson converted a broken Trimble AgGPS 332 GPS receiver into an ATmega32U4-controlled clock.

I Built a FAST Rubik's Cube Solver Robot YouTube video by Tobias Tech

Tobias Tech's ATmega2560-driven can solve a Rubik's cube in seconds.

Simulating The AVR8 For A Browser-based Arduino Emulator It’s always nice to simulate a project before soldering a board together. Tools like QUCS run locally and work quite well for analog circuits, but can fall short with programmable logic. Tool…

David Montero Crespo's Velxio project is an open source Arduino emulator with programmable logic and local execution.

Venetian Blinds Auto-winder (time Controlled) Venetian Blinds Auto-winder (time Controlled): This instructable outlines a venetian blinds’ winder that is time controlled. The initial design was presented in my book “Arduino Ventures” and was an I...

Mirza Naiem Beg's ATmega328-controlled setup turns your Venetian blinds into an automated system that opens and closes at scheduled times.

I 3D PRINTED A MICRO CNC MILL YouTube video by SciFientist

SciFientist made an ATmega328-powered, 3D-printable desktop micro mill that features joystick control

DIY Arduino VFO with AD9850 & TM1638 Pure Sine Wave Signal He AD9850-based VFO provides a clean, sine-wave alternative to square-wave oscillators, ensuring your HF receiver remains free from interfer By Mirko Pavleski.

Mirko Pavleski's ATmega328-powered DIY VFO provides a sine wave alternative to square wave oscillators, complete with a retro-style control center.

A Better Automatic Chicken Coop Door. From Backyard Chickens to 100-Bird Pasture Rotation: Why I Scrapped Two Earlier Controllers and Built a Purpose-Built Ultra-Low-Power Coop Door from Scratch

Now with 100+ chickens, Vinnie Moscaritolo decided to build an ATmega1284P-controlled automatic coop door that calculates sunrise/sunset on its own and opens/closes on schedule with a gravity-actuated vertical door and locking mechanism to keep predators out.

We Built a Victorian Machine That Draws on Eggs YouTube video by GurgleApps

GurgleApps' Automatic Ovoid Scrivener is a Victorian-style egg plotter with a web interface for custom designs.

Automatic Catch Robot: Detects Distance Automatic Catch Robot: Detects Distance: Goodmorning everyone, I designed and built this robotic tennis ball launcher, intended to automatically catch and throw a projectile using data from sensors. ...

Play a game of catch with Richard Huberjohn's ATmega328-controlled, distance-sensing robot.

Did I Make the World's Smallest Rocket Flight Computer? YouTube video by BPS.space

In honor of yesterday's Artemis II launch, our latest #TBT remembers a much smaller and *slightly less powerful* flight computer than the brains of NASA's Space Launch System. Back in 2021, BPS.space designed a fingertip-sized avionics system for model rockets — called Spark — based on a SAM D21.

Autonomous Navigation: Smart RC Car with Obstacle Avoidance using PIC32CZ CA90 MCU YouTube video by Microchip Developer Help

This reference application demonstrates a smart car built on Microchip's PIC32CZ CA90 Curiosity Ultra Development Board. The vehicle can be operated manually via an RC receiver or can navigate autonomously using data from a LiDAR sensor, which enables real-time obstacle detection and path planning.

James Bruton's ATmega328-controlled, six-servo robot dog is a simpler and more accessible design that everyone can build: youtu.be/2eKb_2N0SBI

ATtiny85 LED Roulette PCB Design in EasyEDA Full Step by Step Tutorial YouTube video by PajoPCB

PajoPCB designed an ATtiny85-based roulette PCB that uses 32 LEDs to simulate spins.

Synthiboard Synthesizer development board, powered by an Arduino Pro Mini

MakerVan Labs' Synthiboard is an ATmega328-based synthesizer development board capable of running a number of different synth firmwares.

Aaron Vose's ATtiny412-SR is a custom ATtiny412 dev board that plugs right into a breadboard for simplified project prototyping: www.reddit.com/r/PCB/commen...

Limn: Pen Plotter with Toolchanger I've always wanted my own Pen Plotter that can change tools automatically. I've reached the version 2 of my design. Inspired from E3D, the toolchanger uses another small stepper motor to actuate a rot...

Prashant Sinha's Limn is ATmega1284P-controlled pen plotter equipped with an automatic tool changer.

DIY Automatic Laundry Folding Machine DIY Automatic Laundry Folding Machine: This project is a budget-friendly, automated laundry folding machine built using an Arduino Uno and recycled cardboard. By utilizing two micro-servos and a simpl...

Need a hand with the laundry? Carter Morrow's ATmega328-controlled automated machine will fold your clothes like a retail pro.

David Johnson-Davies highlights a pair of alternative graphics libraries that support a range of different color TFT displays, and combine fast performance with minimal memory usage on ATtiny MCUs: www.technoblogy.com/show?5N9Y

Did you miss yesterday's Arduino Days 2026 livestream? The Wizard of Make Bob Martin joined Arduino co-founder and longtime friend Massimo Banzi for a conversation around the current state of IoT, designing CRA-compliant devices, and more. Watch it now: www.youtube.com/live/qqfmK3q...

Add Laser Engraving to Your Desk for Just $64 Build your own mini laser engraver for $64! This ATmega328-powered project burns detailed designs into wood, leather, and paper.

Elias55745's ATmega328-powered mini laser engraver is capable of burning highly detailed designs into wood, leather, and paper for a low cost.

Custom_Projects' ATmega328-powered Smart Cubes can be programmed to play different games using blocks and a screen: www.reddit.com/r/ArduinoPro...

DIY Spray Paint System Creates Hundreds Of Colors Instantly Can you imagine creating hundreds of spray-paint colors with just four cans?This DIY project lets artists do just that.

Sandesh Manik's Spectrum is an Arduino-controlled spray paint mixing machine that's capable of creating any color on demand.

Connect4 Robot Background: I bought a 3d printer, and I had 2 stepper motors and drivers, so I was looking for a project that will use them. it ended up being a drawing robot that plays Tic-Tac-Toe and Connect4, and...

Yuval Lombrozo taught an ATmega328-controlled parallel SCARA robot to play tic-tac-toe and Connect Four.

KSTR-SAMA5D27 - Small-Factor Single Board Computer Check out the KSTR-SAMA5D27 small Single Board Computer. Excellent performance and multiple applications, based on Microchip SAMA5D27

Conclusive Engineering's KSTR-SAMA5D27 is an all-in-one single-board computer based on the SAMA5D27 Cortex-A5 MPU. With low power consumption and a compact form factor, it's ideal for secure node computing and IoT solutions.