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YouTube video by Ancient Digital Iris

Ancient's Digital Iris upcycles an old phone LCD into a programmable, iris-like optical contraption that adds digital effects to a DSLR camera pipeline.

Fidget Clicker Becomes Miniature Game Console Fidget toys are everywhere these days. A particularly popular type simply puts some keyboard switches on a plate to provide a certain type of clicky satisfaction. [wjddnjsdnd] took that concept a s…

The GameBox Clicker is an ATmega328-powered miniature game console built around a 2x3 fidget clicker.

Back at Maker Faire Rome 2025, our friends from @officialarduino.bsky.social stopped by our booth to get a closer look at our Arduino UNO SPE Shield demo: a Single-Pair Ethernet network for motor control and edge AI applications: youtube.com/shorts/2V3pFR_ouH4

Soft Power Switch Circuit for Battery-Powered Devices - Circuit Cellar Discover how to build a compact and efficient soft power switch for battery-powered devices using an ATtiny10 microcontroller. Learn how this design replaces toggle switches with a momentary push butt...

Michael Hansen overcame the limitations of toggle switches for battery-powered devices with an ATtiny10/13-based solution.

Turning a Vintage Typewriter Into a High-End Gaming PC Prototype is building a gaming PC inside a vintage typewriter, starting with a custom-built mechanical keyboard conversion.

YouTuber Prototype is turning a vintage mechanical typewriter into a modern gaming PC.

Reverse Engineering a Commercial Dryer 9‑Digit LED Dot Matrix Display Reverse Engineering a Commercial Dryer 9‑Digit LED Dot Matrix Display: Commercial dryer machines often use custom LED dot‑matrix displays instead of simple 7‑segment LEDs. These displays show time, er...

Voltage Ventures reverse engineered a commercial dryer's nine-digit dot‑matrix display system with an ATmega128-based controller.

Built with an Arduino Nano and a DIY-etched PCB housed inside of a 3D-printed case, this digital clock will look beautiful sitting on your bedside table: boxart.lt/blog/diy_dig...

The $3 DIY Arduino Save some cash by building a $3 minimal Arduino UNO clone from a bare ATmega328P chip — here's how to do it.

Save some cash by building a $3 minimal Arduino UNO clone from a bare ATmega328P chip.

5x7 RGB led Display Here on this unit I've yet to clean off the flux, but is working very well, soldering is very difficult without a metal positioning mask, but is on my to-do list. VCC, the RX an TX serial lines, progr...

Harold Moore designed an ATtiny1604-controlled 5x7 matrix display module using 2020 SMD RGB LEDs, chainable via I2C.

YouTube video by Chris Borge Printing The Ultimate Scanning Solution

YouTuber Chris Borge designed an ATmega328-controlled, over-the-top turntable for 3D scanning.

Create Stunning Ambient Lighting with This Simple Arduino LED Project You can build your own adjustable, color-changing raindrop light with an Arduino Nano and a handful of basic electronic components.

Zafer Yildiz built a speed-adjustable, color-changing raindrop light on a homemade circuit board with an ATmega328 and some other basic components.

A portable ultrasound sensor may enable earlier detection of breast cancer MIT researchers developed a miniaturized ultrasound system that could make it easier for ultrasounds to be performed more often, either at home or at a doctor’s office. The system could help more brea...

MIT researchers have developed a miniaturized ultrasound system that could be used at home or in doctors’ offices to scan people who are at high risk for breast cancer.

Building an Outrageously Awesome DIY Retro Game Console A cartridge-based console project that blends Arduino fundamentals, retro gaming nostalgia, and modern maker tools.

Max Maxfield created a DIY cartridge-based console that'll bring back memories of '80s gaming.

Build Your Own High-Precision LC Meter with an Arduino Build this Arduino-based LC meter for affordable, high-precision component testing on your own workbench.

Assemble your own ATmega328-based LC meter for low-cost, high-precision component testing on your workbench.

Watch Mike Kohn play music through an ATtiny85 that's powered by a Stirling engine: www.mikekohn.net/micro/stirli...

Motorized Faders Make An Awesome Volume Mixer For Your PC These days, Windows has a moderately robust method for managing the volume across several applications. The only problem is that the controls for this are usually buried away. [CHWTT] found a way t…

CHWTT's ATmega32U4-powered mixer allows you to control the volume levels across several PC applications using five motorized faders and presets.

HWHardsoft's power monitor measures mains frequency using a SAM D21-based Arduino MKR WiFi 1010 and an ILI9341 display: projecthub.arduino.cc/hwhardsoft/p...

YouTube video by TeknoTrek Build a Professional LC Meter with Arduino Nano High Precision & Auto Ranging #lcmeter #arduino

TeknoTrek created a DIY high-precision auto-ranging LC meter based on an ATmega328 that's capable of accurately measuring inductance and capacitance across a wide measurement range.

YouTube video by Playduino Stop Buying Arduino Boards! Build Them for $3 Instead

YouTuber Playduino shows how to build a functional, low-cost "Arduino" using an ATmega328P and only a handful of components.

Comprehensive Power Management For The Raspberry Pi The Raspberry Pi has been a revolutionary computer in the maker space, providing a full Linux environment, GUI, and tons of GPIO and other interfacing protocols at a considerably low price. This wa…

Vinnie Moscaritolo designed an ATmega88-equipped power watchdog and relay controller for the Raspberry Pi.

WhatsUp? A GPS Keychain That Shows Overhead Planets This small circuit uses GPS and 9 RGB LEDs that light up when the eight planets (and Pluto and the Moon) are overhead By mars91.

Mars91's ATtiny3216-based, GPS-enabled keychain lights up its RGB LEDs when the eight planets (plus Pluto and the Moon) are overhead.

Handheld Steering Wheel Controller Gets Force-Feedback For a full-fledged, bells-and-whistles driving simulator a number of unique human interface devices are needed, from pedals and shifters to the steering wheel. These steering wheels often have forc…

Jason Winfield designed an ATmega32U4-powered handheld steering wheel controller with force feedback.

IMSPI 8080 Brings Front-Panel Switches to the Raspberry Pi IMSPI 8080 is a 3D-printed Raspberry Pi 5 case inspired by the IMSAI 8080 that uses retro toggle switches to control modern services.

The IMSPI 8080 is a 3D-printed case inspired by the IMSAI 8080 that brings front panel switches to the Raspberry Pi — complete with 28 LEDs and a couple MCP23017 I/O expanders.

When inspiration strikes! Redditor 'EYL8902' put together a DIY lightning detector using an ATmega328-based Arduino Nano and an AS3935 sensor: www.reddit.com/r/arduino/co...

Coxmos AR1 by Orbigtech on Tindie This is a development board inspired by Arduino UNO. It employs the 8‑bit ATmega168PB‑AU microcontroller (AVR architecture)

Orbigtech's CosmoX AR1 is an Arduino UNO-inspired dev board with an ATmega168PB‑AU at its core.

OSIRIS Open Geiger Counter Kit by SpaceMonkeyEngineering on Tindie The Open Source Ionizing Radiation Indication System

Nicolai Sawilla's OSIRIS is an ATmega328PB-based device that can be used as a standalone Geiger counter or dosimeter, a data logger, or even a true random number generator when connected to a PC via USB.

No Commodores Were Harmed in the Making of This USB Keyboard Turn a vintage Commodore 64 keyboard into a modern USB device using an Arduino Leonardo.

Emanuele Martorelli turned a classic Commodore 64 into an ATmega32U4-powered USB keyboard for modern computers.

PIC18-RESPFM - 4 slots Modular Chiptune Host by Denjhang's Retro Hardware on Tindie 4 slot SPFM host implemented using PIC18F25K22

For those looking to once again experience the nostalgic sound of chiptunes, Denjhang Liu's PIC18-RESPFM is a RE:birth bus-compatible, four-slot SPFM host implemented on a PIC18F25K22.

BT110 Bytebeat Synthesizer Bytebeat synthesis is a very unique and strange way to create sounds. You simply take a variable, and then do whatever logical/mathematical operations you feel like doing to it. This will generate …

DODcircuits' BT110 packages up everything you need to create bytebeat synthesis into an easy-to-use standalone module.

Coxmos AR1 by Orbigtech on Tindie This is a development board inspired by Arduino UNO. It employs the 8‑bit ATmega168PB‑AU microcontroller (AVR architecture)

Orbigtech's CosmoX AR1 is an Arduino UNO-inspired development board with an ATmega168PB‑AU at its core.