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Arduino projects

102 open-source builds that use an Arduino — checked, explained and honestly judged.

Difficulty

102 projects · most popular first

A used Google speaker becomes your private AI assistant with one swapped boardFULL CAD

A used Google speaker becomes your private AI assistant with one swapped board

AIFor intermediate builders

You can build a laser scanning microscope from a dead Blu-ray playerFULL CAD

You can build a laser scanning microscope from a dead Blu-ray player

ScienceFor advanced builders

OpenAstroTracker — 3D printable astrophotography tracking mount for DSLR camerasFULL CAD

OpenAstroTracker — 3D printable astrophotography tracking mount for DSLR cameras

ScienceFor advanced builders

You can turn IKEA's LED wall lamp into a display you programNO CAD FILES

You can turn IKEA's LED wall lamp into a display you program

DisplaysFor intermediate builders

You can build a machine that makes vinyl records at homeFULL CAD

You can build a machine that makes vinyl records at home

AudioFor advanced builders

You can build a machine that bends wire into any shapeFULL CAD

You can build a machine that bends wire into any shape

WorkshopFor advanced builders

You can 3D print a lab centrifuge that runs on a 12V motor and a switchFULL CAD

You can 3D print a lab centrifuge that runs on a 12V motor and a switch

ScienceFor intermediate builders

You can turn a cheap resin printer into a bioprinter for €500FULL CAD

You can turn a cheap resin printer into a bioprinter for €500

ScienceFor expert builders

You can build three lab syringe pumps plus a microscope from Caltech's open design for under 400 dollarsFULL CAD

You can build three lab syringe pumps plus a microscope from Caltech's open design for under 400 dollars

ScienceFor intermediate builders

Flix: Build a Drone From Scratch on a Cheap ESP32FULL CAD

Flix: Build a Drone From Scratch on a Cheap ESP32

DronesFor advanced builders

You can build the sensor that reads your heart, muscles and brain at homeFULL CAD

You can build the sensor that reads your heart, muscles and brain at home

Open-hardwareFor intermediate builders

You can build a full-size 3D printer out of electronic waste for about 65 dollarsFULL CAD

You can build a full-size 3D printer out of electronic waste for about 65 dollars

WorkshopFor advanced builders

PUMA: a 3D-printed benchtop microscope that takes professional optics up to 1000x oil immersionFULL CAD

PUMA: a 3D-printed benchtop microscope that takes professional optics up to 1000x oil immersion

ScienceFor advanced builders

HOSI: build a hyperspectral camera for £350 that sees UV and near-IR (commercial ones start above £20,000)FULL CAD

HOSI: build a hyperspectral camera for £350 that sees UV and near-IR (commercial ones start above £20,000)

ScienceFor advanced builders

You can build the 2,500-dollar drone winch for 120 dollars, and it lifts 3 kgFULL CAD

You can build the 2,500-dollar drone winch for 120 dollars, and it lifts 3 kg

RoboticsFor advanced builders

A home-built see-through coffee roaster, run on free roasting softwareNO CAD FILES

A home-built see-through coffee roaster, run on free roasting software

HomeFor advanced builders

You can build the wound therapy pump rich hospitals have, for 280 eurosFULL CAD

You can build the wound therapy pump rich hospitals have, for 280 euros

HealthFor advanced builders

Open Echo: open-source sonar that maps the seabed, fish and sediment layers from an Arduino shieldFULL CAD

Open Echo: open-source sonar that maps the seabed, fish and sediment layers from an Arduino shield

ScienceFor advanced builders

A 28.9M parameter language model runs entirely on a cheap ESP32-S3 microcontrollerNO CAD FILES

A 28.9M parameter language model runs entirely on a cheap ESP32-S3 microcontroller

AIFor intermediate builders

CarCluster: a junkyard BMW instrument cluster runs on your desk and shows live data from a racing gameFULL CAD

CarCluster: a junkyard BMW instrument cluster runs on your desk and shows live data from a racing game

DisplaysFor intermediate builders

You can build the machine that grows a laser crystal on your benchFULL CAD

You can build the machine that grows a laser crystal on your bench

ScienceFor advanced builders

DIYNAFLUOR: a 40-dollar open-source DNA fluorometer you 3D print and assemble without solderingFULL CAD

DIYNAFLUOR: a 40-dollar open-source DNA fluorometer you 3D print and assemble without soldering

ScienceFor intermediate builders

Build a spot welder from a microwave someone threw outNO CAD FILES

Build a spot welder from a microwave someone threw out

WorkshopFor advanced builders

You can build an oscilloscope from a Pi Pico and a phone in a drawerFULL CAD

You can build an oscilloscope from a Pi Pico and a phone in a drawer

WorkshopFor intermediate builders

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