Cool uses for Arduino

There are very many cool Arduino projects and project sites in Internet (make Google search to see). Here are some interesting links to check out:
Arduino Projects at indestructables

Arduino user projects

Arduino Project Ideas

Top 40 Arduino Projects of the Web

Arduino Rising: 10 Amazing Projects People Are Doing With The Tiny Microcontroller

Electronics For The Everyman: 25 Kick Ass Arduino-Powered Projects

10 Simple-But-Fun Projects to Make With Arduino

DuinoForProjects

Codeduino projects

Internet of Thing with Arduino

11 Arduino projects that require major hacking skills—or a bit of insanity

I will be posting more links to more interesting projects as comments to this post, like I did in my Cool uses for the Raspberry Pi posting. Some of the most interesting that spend some more time at can get their entire own postings this blog in Arduino section.

3,004 Comments

  1. Tomi Engdahl says:

    https://www.elektormagazine.com/news/circuit-user-friendly-digital-sound-effects-generation?fbclid=IwZXh0bgNhZW0CMTEAAR39YKqgNGv19-ooeOkXBsM1lqwpjY7jXsGE25tX6KwA1SWmC1YrUAz0bkA_aem_AYaKU-cerg0ymBpvLRHH4wtvdB61d45INxFRKjG87likEpXvpyroMmkZoq1r_d7-MfDCXv6gK4NdVg_uKW2ewOy7&hsa_acc=315121299153451&hsa_ad=120208926829970413&hsa_cam=120208926829680413&hsa_grp=120208926829930413&hsa_net=facebook&hsa_src=fb&hsa_ver=3&utm_campaign=Post%3A%20%22Circuit%3A%20User-Friendly%20Digital%20Sound%20Effects…%22&utm_medium=paid&utm_source=facebook

    Reply
  2. Tomi Engdahl says:

    https://hackaday.com/2024/05/01/this-arduino-is-feeding-the-fishes-2/

    Reply
  3. Tomi Engdahl says:

    https://circuitdiagrams.in/how-to-make-an-electronic-component-tester/

    Reply
  4. Tomi Engdahl says:

    https://hackaday.com/2024/05/08/ardeeg-lowers-the-cost-of-brain-computer-interfaces/

    Reply
  5. Tomi Engdahl says:

    Compatible with the Arduino UNO R4 WiFi, Ildar Rakhmatulin’s ardEEG shield is able to measure EEG, EMG, and ECG bio-signals: https://github.com/Ildaron/ardEEG

    Reply
  6. Tomi Engdahl says:

    https://www.electrician-1.com/2023/04/on-video-oscilloscope-diy-4-in-1-how-to.html

    Reply
  7. Tomi Engdahl says:

    https://www.circuitbasics.com/how-to-use-microphones-on-the-arduino/

    Reply
  8. Tomi Engdahl says:

    https://makezine.com/article/maker-news/core-memory-why-we-used-60-year-old-tech-in-an-arduino-shield/

    Reply
  9. Tomi Engdahl says:

    Here are 15 ingenious projects you can build with an Arduino
    BY
    AYUSH PANDE
    PUBLISHED 2 DAYS AGO
    From DIY 3D printers to FPV drones, there’s a lot you could do with your Arduino microcontroller
    https://www.xda-developers.com/incredible-arduino-projects/

    Reply
  10. Tomi Engdahl says:

    https://hackaday.com/2024/06/03/glitching-an-atmega328p-has-never-been-simpler/

    Reply
  11. Tomi Engdahl says:

    https://www.circuitbasics.com/how-to-set-up-an-ultrasonic-range-finder-on-an-arduino/

    Reply
  12. Tomi Engdahl says:

    John Graham-Cumming shows how he built a super simple light sensor logger using an Arduino Leonardo, a large LED, and a resistor or three: https://blog.jgc.org/2024/06/two-ways-to-use-led-as-light-sensor.html

    Reply
  13. Tomi Engdahl says:

    https://hackaday.com/2024/06/22/an-arduino-nano-clone-in-a-dip-sized-footprint/

    Reply
  14. Tomi Engdahl says:

    DIY simple Capacitive Proximity sensor
    Extremely useful and adjustable sensor which have several advantages including high reliability, long lifespan, and resistance to environmental factors like dirt, moisture, and vibration.
    Detailed instructions, schematic, and code at:
    https://youtu.be/dcvzawPDav0

    Reply
  15. Tomi Engdahl says:

    A DIY Proximity Sensor, Using Just Scrap Parts And Software
    https://hackaday.com/2024/07/01/diy-proximity-sensor-using-just-scrap-parts-and-software/

    [mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors.
    The prototype has a threshold set via potentiometer for convenience.

    The basic idea is that it’s possible to measure a capacitor’s capacitance using two microcontroller pins and the right software, so by using a few materials to create an open-style capacitor, one can monitor it for changes and detect when anything approaches enough to alter its values past a given threshold, creating a proximity sensor.

    The sensor shown here is essentially two plates mounted side-by-side, attached to an Arduino Nano using the Capacitor library which uses just two pins, one digital and one analog.

    DIY simple Capacitive Proximity sensor
    Extremely useful and adjustable sensor which have several advantages including high reliability, long lifespan
    https://hackaday.io/project/196710-diy-simple-capacitive-proximity-sensor/

    A capacitive proximity sensor is a type of sensor used to detect the presence of an object without physical contact.

    Reference > Libraries > Capacitor
    Capacitor
    Sensors
    Measure capacitance from 0.2pF to 100uF with no external hardware.
    Requires one digital pin and one analog pin.
    https://www.arduino.cc/reference/en/libraries/capacitor/

    Reply
  16. Tomi Engdahl says:

    Reference > Libraries > Capacitor
    Capacitor
    Sensors
    Measure capacitance from 0.2pF to 100uF with no external hardware.
    Requires one digital pin and one analog pin.
    https://www.arduino.cc/reference/en/libraries/capacitor/

    https://github.com/codewrite/arduino-capacitor
    Arduino library to measure capacitance from 0.2pF to over 100uF with no external hardware.
    This library allows capacitance to be measured between two pins. One pin must be an analog pin.

    https://github.com/codewrite/arduino-capacitor/blob/master/examples/MeasureCapacitorLite/MeasureCapacitorLite.ino

    Reply
  17. Tomi Engdahl says:

    Capacitance Measurement With The Arduino Uno
    https://hackaday.com/2014/01/22/capacitance-measurement-with-the-arduino-uno/#more-113173

    Reply
  18. Tomi Engdahl says:

    https://projecthub.arduino.cc/mircemk/how-to-make-simplest-possible-autorange-capacitance-meter-99f067?fbclid=IwZXh0bgNhZW0CMTEAAR2Hxt_N0FXDZlZz3XHGc0GAGRNfarhW6eO5jpdMb1hgyzN-o13EWnSqgp8_aem_X76PN0mqOadWnmJrZ8qGmA

    Reply
  19. Tomi Engdahl says:

    https://www.partco.fi/fi/arduino/arduino-aloitussarjat/27067-ard-akx00069.html

    Alkuperäinen Arduino® AKX00069 – Plug and Make Kit – Luo älykkäitä IoT-laitteita nopeasti ja helposti monipuolisten Modulino®-sensorien avulla. Plug and Make Kit on Arduino Uno R4 WiFi:n ympärille koostuva sarja.

    Reply
  20. Tomi Engdahl says:

    UNDO ARDUINO ENCRYPTION WITH AN OSCILLOSCOPE
    https://hackaday.com/2024/07/14/undo-arduino-encryption-with-an-oscilloscope/

    Cryptography ain’t easy. Seemingly small details like how many times a computationally intensive loop runs can give the game away. [Lord Feistel] gives us a demo of how this could work with nothing more than poorly designed code, a resistor, and an oscilloscope.

    Power analysis attack over RSA
    https://github.com/lord-feistel/power_analysis

    Reply
  21. Tomi Engdahl says:

    Magnus Is a Finger-Drumming, Rapid-Fire, Arduino-Powered Magnetic Exoskeleton for Your Hand
    Reaching peak force in just 11.7ms, Magnus uses magnetism to provide a comfortable yet high-performance boost for your fingers.
    https://www.hackster.io/news/magnus-is-a-finger-drumming-rapid-fire-arduino-powered-magnetic-exoskeleton-for-your-hand-006ea65059ec

    Reply
  22. Tomi Engdahl says:

    Tommy Liao Gets Low-Cost Micrometers Talking Serial with an Arduino-Compatible Adapter Build
    Rather than using Clockwork Tools’ official, manual serial capture dongle, Liao reverse engineered the signal to build something better.
    https://www.hackster.io/news/tommy-liao-gets-low-cost-micrometers-talking-serial-with-an-arduino-compatible-adapter-build-91fb5fb7254e

    Reply
  23. Tomi Engdahl says:

    MicroClick: Your DIY Open-Source MacroPad
    The “Micro Cl1ck” project is a custom, programmable macro-pad, designed to enhance productivity through customizable shortcuts and controls.
    https://www.hackster.io/CiferTech/microclick-your-diy-open-source-macropad-550245

    Reply
  24. Tomi Engdahl says:

    YouTuber Alastair Aitchison shared a detailed overview of how you can use your Arduino to read input from USB HID devices like keyboards, mice, gamepads, or even barcode scanners.

    How to use USB HID Devices as Arduino Inputs – Keyboards, Mice, Magstripe/Barcode readers, and more!
    https://m.youtube.com/watch?v=a24kk8yusSE

    Reply
  25. Tomi Engdahl says:

    https://blog.arduino.cc/2024/08/07/explore-underwater-with-this-arduino-controlled-diy-rov/?fbclid=IwY2xjawEhGyxleHRuA2FlbQIxMQABHeKZ62oqbtvojsFKrB-eA4DK4RDWuPiGFf05YOFHnWkhLiAVrQL_2Mwybg_aem_FcCuMbwKShmz9s5rgq8PGw

    Reply
  26. Tomi Engdahl says:

    https://blog.arduino.cc/2024/08/03/patrol-the-pool-with-this-arduino-nano-powered-diy-rc-submarine/?fbclid=IwY2xjawEhHOVleHRuA2FlbQIxMQABHRux6cMGPCfjivfHQ-rTzhII5d4Fs1U2Luwa6XNLaL3RZhDTBA1HdG07lQ_aem_kJy_TB_8cSYA4Ow820dLcg

    Reply
  27. Tomi Engdahl says:

    https://blog.arduino.cc/2024/08/01/web-serial-camera-stream-with-arduino/?fbclid=IwY2xjawEhHUBleHRuA2FlbQIxMQABHRDRT7e3c-p6qo8fLwa1iafG66w9zQfyXVIyDvaJI3BLwxewpK60PO1dYg_aem_t2WRz9wZTsOd3qFMwcUN-w

    Reply
  28. Tomi Engdahl says:

    https://www.instructables.com/3D-Printed-Floating-Solar-Water-Fountain/?fbclid=IwY2xjawEhHdVleHRuA2FlbQIxMQABHWjB3h-Mv0loo7jxnZFGie6PK16UMVMpw2OSZl7rzY9oyAOY4gWLV0tMyw_aem_C4L8pEC6ftVS-VWEaQ09Zw

    Reply
  29. Tomi Engdahl says:

    https://blog.arduino.cc/2024/08/01/a-miniature-vegas-sphere-is-the-perfect-nightlight/?fbclid=IwY2xjawEhHgVleHRuA2FlbQIxMQABHT0ctnWIY3rUXEm1F3JYUwnrpDdlbVwjNYr0zFYOOCc3Kw8V2aUP7wjEyw_aem_IUvAinTK_IKzFuUKkelWWA

    Reply
  30. Tomi Engdahl says:

    Naveen Kumar turned the Arduino GIGA R1 WiFi and GIGA Display Shield into a handheld video player for watching movies.
    https://www.hackster.io/naveenbskumar/watch-movies-on-the-arduino-giga-r1-3e4761?fbclid=IwY2xjawEhIL1leHRuA2FlbQIxMQABHVccqwOXgVI6O4X6H5LGiZKxQ7k_Sc3zaGk7T4Ol5G0YblLTrnwOEV1MGw_aem_X4X7s33iUvx3ZWlXfS-TUg

    Reply
  31. Tomi Engdahl says:

    Arduino Cloud’s New Custom Templates Aim to Get Your Projects Up and Running Fast
    Building on the earlier addition of official project templates, Arduino Cloud now lets you make — and share — your own.
    https://www.hackster.io/news/arduino-cloud-s-new-custom-templates-aim-to-get-your-projects-up-and-running-fast-76aa5945ba5e?fbclid=IwY2xjawEhITtleHRuA2FlbQIxMQABHUrctiOtwlN3zGXZVbGq7bWxcprcxD21BribRgVt75vmrTaOVcaT02K82g_aem_l_w1stykMrmBQfuWF9pX1A

    Reply
  32. Tomi Engdahl says:

    https://www.elektormagazine.com/review/plug-and-make-kit-a-new-way-of-doing-arduino?fbclid=IwY2xjawEhIcxleHRuA2FlbQIxMQABHa50esbPaucfWdGUMKxUAuqpIzce1YyH6WxBixqt6UkPUSTJCDtFXEf1mA_aem_r3q9KA8o9S5c1Mkys5buxg

    Reply
  33. Tomi Engdahl says:

    https://blog.arduino.cc/2024/07/29/adding-voice-commands-to-a-lego-planetarium-set-with-an-arduino-nano-33-iot/?fbclid=IwY2xjawEhKiVleHRuA2FlbQIxMQABHRnQt2z1Dq6b8uWETol-6wRe4a46VInC57UfJSy9OOp1znF8BAA-gSIn5g_aem_a1KqPCRmDtyWsqmp2LT8Lg

    Reply
  34. Tomi Engdahl says:

    https://blog.arduino.cc/2024/07/29/this-diy-guitar-transmitter-sends-digital-audio-to-the-amp/?fbclid=IwY2xjawEhKmFleHRuA2FlbQIxMQABHU6IfiqHu5CVg39Ruxq9RpapyS5Uawg3cL6Xd2LIXJsMrr2XkdC1Db5ErQ_aem_kqubIzkifJ0Yha_87kGfWA

    Hardaker accomplished that with two different Arduino boards: an Arduino Nano ESP32 for the transmitter and an Arduino GIGA R1 WiFi for the receiver. The two boards communicate with each other (to send audio data) through nRF24L01 radio transceivers, which allow for bandwidth up to 2Mbps.

    The transmitter has an external ADC (analog-to-digital converter) that Hardaker chose to keep noise down as a much as possible. At the other end, he took advantage of the GIGA R1 WiFi’s built-in DAC (digital-to-analog converter) to pump out audio through the onboard 3.5mm jack to the amp. He even programmed some digital filtering to clean up the signal.

    Reply
  35. Tomi Engdahl says:

    https://ipxchange.tech/news/expand-industrial-arduinos-with-portenta-shields/?fbclid=IwY2xjawEhKrxleHRuA2FlbQIxMQABHUHhYbwZ_8IkrrFeQt-RU15eqt06rWSQD1EOk0MTmqRhsqsWD70Hzng7Hw_aem_RlJU982q6bIKDStF138q3g

    Reply
  36. Tomi Engdahl says:

    https://blog.arduino.cc/2024/08/01/web-serial-camera-stream-with-arduino/

    Reply
  37. Tomi Engdahl says:

    Rajesh K T’s Arduino UNO Clone Shows True Flexibility — Literally
    The “Flexduino” offers everything you’d expect from an Arduino UNO compatible — but on a floppy PCB substrate.
    https://www.hackster.io/news/rajesh-k-t-s-arduino-uno-clone-shows-true-flexibility-literally-04be90b605c2

    Reply
  38. Tomi Engdahl says:

    Arduino MIDI Input Cooked Three Ways
    Use MIDI input via custom adapters for the Arduino UNO and Opta, or implement an off-the-shelf shield.
    https://www.hackster.io/news/arduino-midi-input-cooked-three-ways-7ab3bfd3a109

    Reply
  39. Tomi Engdahl says:

    https://hackaday.io/project/197794-easiest-arduino-smart-plant-watering

    Reply
  40. Tomi Engdahl says:

    Syntaxx is a robotic DJ powered by three Arduino boards — a GIGA R1 WiFi, Mega, and UNO R4 WiFi — each handling specific functions to create a seamless and dynamic performance.

    This perplexing robotic performer operates under the control of three different Arduino boards
    https://blog.arduino.cc/2024/10/10/this-perplexing-robotic-performer-operates-under-the-control-of-three-different-arduino-boards/?fbclid=IwY2xjawF1e6xleHRuA2FlbQIxMQABHfz5el3KTda6sBHdbZOyQCTTtNiC85_8-6XycL3bLtZo9_NS1P-nYagsrQ_aem_qziv7NZ2ebM4NVvYI496RQ

    Every decade or two, humanity seems to develop a renewed interest in humanoid robots and their potential within our world. Because the practical applications are actually pretty limited (given the high cost), we inevitably begin to consider how those robots might function as entertainment. But Jon Hamilton did more than just wonder, he actually built a robotic performer called Syntaxx and it will definitely make you feel things.

    It is hard to describe this robot without sounding like a Mad Libs game filled out by a cyberpunk-obsessed DJ. Hamilton designed it to give performances, primarily in the form of synthetic singing accompanied by electronic music.

    https://projecthub.arduino.cc/djicemanj1/utilizing-arduino-giga-mega-and-uno-rev4-to-create-syntaxx-an-advanced-robotic-performer-dfa7a8?_gl=1*fv3aev*_gcl_au*ODUwNjAzNzY1LjE3Mjg2MTc1Njc.*FPAU*ODUwNjAzNzY1LjE3Mjg2MTc1Njc.*_ga*ODA1MjM0NzEwLjE3MjAyNTI1MDk.*_ga_NEXN8H46L5*MTcyODYxNzU2Ny42LjAuMTcyODYxNzYwMi4wLjAuOTg3NTk2MjM0*_fplc*SkN2JTJCMnFqakolMkZUJTJGdWNrOUJDQXdiZERQUndqeVZIQkpBV1lTMGo4aTlMMTJsWlJ4TUl4d250TWpmcHR0SWhUeEdqWHU0azhybU1nS3kyQzZWWXR2WXpNSW0wN0tpenhBSWgyT2xqaTFhUnlQVmFsYzN6UWtpeDNWOWRwa1BnJTNEJTNE

    Reply
  41. Tomi Engdahl says:

    PomodoryPlay is an Arduino-powered Pomodoro timer that plays YouTube videos during your break intervals.
    https://m.youtube.com/watch?v=NcsmPQeDj7A

    Reply
  42. Tomi Engdahl says:

    Earliest-deadline-first real-time for AtMega1284
    https://hackaday.io/project/422-earliest-deadline-first-real-time-for-atmega1284

    A preemptive real-time kernel is handy for managing embedded tasks. The kernel needs to be light weight for AVR MCU.

    Reply
  43. Tomi Engdahl says:

    Arduino Nano 20KHz Digital Portable Oscilloscope
    https://hackaday.io/project/183702-arduino-nano-20khz-digital-portable-oscilloscope

    A difficult code with a try to display waveform on a small screen with precisions. Volts-time, frequency, duty cycle and divisions.

    We are using a mini-OLED 128X64 to display the signal waveform, Frequency, duty cycle. 4 tactile buttons are used to change the modes, Volts/Divisions, and time/Divisions. So, I tried this, and the results are here.

    Note* This project is only for educational purposes and shows the capabilities of a 16Mhz 8-bit microcontroller board. This MCU Can support frequencies below 50KHz, so it can’t be applicable for commercial and professional uses. That way, the project can also be entitled POOR MAN OSCILLOSCOPE for me.

    Arduino Nano/Uno:

    Both the boards have the same 8-bit Atmega328p microcontroller to use any of them. This tutorial uses I2C communication to print the readings on an OLED display. Our microcontroller has 6-channel 10-bit ADC, 13 digital I/O pins, and an 8Mhz internal clock.

    Reply
  44. Tomi Engdahl says:

    https://hackaday.com/2024/10/15/an-arduino-triggers-a-flash-with-sound/

    Reply
  45. Tomi Engdahl says:

    Arduinos That See, Hear, Think: A Tour of the Avnet Arduino Pro Edge AI/ML Vision and Speech Kit
    Edge AI bundle includes the Arduino Portenta H7 with Vision Shield, Nicla Vision, and more, plus the software to get you started.
    https://www.hackster.io/news/arduinos-that-see-hear-think-a-tour-of-the-avnet-arduino-pro-edge-ai-ml-vision-and-speech-kit-32ec122f05bc?fbclid=IwY2xjawGEz4hleHRuA2FlbQIxMQABHRC9Vm20Syw6LTGXoPIVDNrzE5UL8ZOu6LxjDszuYfDmbVQDJVK0fE1mig_aem_J8X6iVFGVoyheUN4A7ZpWQ

    Reply
  46. Tomi Engdahl says:

    Arduino Is on a Roll
    The Batteryrunner is a handmade, street-legal electric car that is controlled by over ten Arduino boards for extreme hackability.
    https://www.hackster.io/news/arduino-is-on-a-roll-3746d68d0641

    Reply
  47. Tomi Engdahl says:

    https://blog.arduino.cc/2024/11/27/its-silver-its-green-its-the-batteryrunner-an-arduino-powered-fully-custom-electric-car/

    Reply
  48. Tomi Engdahl says:

    https://docs.arduino.cc/tutorials/uno-r4-minima/cheat-sheet/

    Reply
  49. Tomi Engdahl says:

    https://blog.arduino.cc/2024/11/27/this-fake-crt-tv-works-using-lasers-and-uv-magic/

    Reply
  50. Tomi Engdahl says:

    Maker creates an Arduino-powered Bust-A-Move mechanism, controlled in real-time from Mame arcade emulator
    News
    By Ash Hill published November 25, 2024
    This project gives virtual reality a new meaning.
    https://www.tomshardware.com/raspberry-pi/arduino-powers-a-cardboard-bust-a-move-mechanism-that-moves-in-real-time

    Reply

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