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


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.


  1. Tomi Engdahl says:

    Pocket Arduino Microcomputer

    Pocket microcomputer on an Arduino with user input and LCD display. The OS implements a file system and code editor and executor

  2. Tomi Engdahl says:

    Give your Arduino project a chatGPT AI brain – for free

    This Arduino lesson was created by Programming Electronics Academy. We are an online education company who seeks to help people learn about electronics and programming through the ubiquitous Arduino development board.

    **We have no affiliation whatsoever with Arduino LLC, other than we think they are cool.**
    00:00 Introduction
    00:12 Project Overview
    00:35 Project Map
    01:23 Actual Demo
    02:09 We’ve made contact…
    02:48 Existential AI fear…
    03:08 Software Overview
    04:08 Library Specifics
    04:50 Earn 1 Gold Coin $$
    05:19 Best Arduino Video yet…

  3. Tomi Engdahl says:

    The Arduino UNO R4 has been announced some minutes ago during Arduino Day 2023! It preserves the well-known features of the UNO family while offering unprecedented performance and possibilities thanks to its Renesas Electronics RA4M1 32-bit Cortex-M4 MCU. Stay tuned and subscribe to the waiting list now:

  4. Tomi Engdahl says:

    No niin sitten ihan uutta Arduino Uno R4 lautaa ihmetteleen. Muistii ja nopeutta löytyy samassa tutussa layoutissa. Ei ku lukeen mikä vehe se on.

  5. Tomi Engdahl says:

    Kino Wheels Gives You A Hand Learning Camera Operation

    Getting the hang of camera controls is the idea behind [Cadrage]’s Kino Wheels open-source handwheels. The business end of Kino Wheels is a pair of DIN 950 140mm spoked handwheels — because of course there’s a DIN standard for handwheels. The handwheels are supported by sturdy pillow block bearings and attached to 600 pulse/rev rotary encoders, which are read by an Arduino Mega 2560. The handwheels are mounted orthogonal to each other in a suitable enclosure; the Pelican-style case shown in the build instructions seems like a perfect choice, but it really could be just about anything.

  6. Tomi Engdahl says:

    Building an Arduino Powered Hexapod from Scratch

  7. Tomi Engdahl says:

    “Arduino passed the farm test.”

    After working four years on the roof of a tractor, this Due can finally get some well-earned rest…

  8. Tomi Engdahl says:

    Tiny Solution of Daily Activities Recognition
    Prototyping: a Hand Tracker with Nicla Sense ME and Bosch sensors

  9. Tomi Engdahl says:

    Uno Plus+

    An Arduino/Genuino Compatible UNO with Pin LED indicators and additional Extras

    An Arduino Uno Compatable Board with Isolated Pin LED Status indicators, Stemma Connector, Built in RTC, and SD Card Adapter

  10. Tomi Engdahl says:

    AI Logic Analyzer

    A raspberry pi based project to consume audio and analyze it for logical fallacies

  11. Tomi Engdahl says:

    Sapling is an Arduino Micro-based device that turns the electrical activity within plants into music.

  12. Tomi Engdahl says:

    Use your Arduino and ESP32/ESP8266 from your Smartphone. No Cloud! (RemoteXY)

    We all love Microcontrollers and Smartphones. Unfortunately, they do not work well together because not everybody can create Smartphone apps and connect them via Bluetooth or Wi-Fi to an ESP32. Arduinos are even more complicated because they do not offer communication. This is why I like the project I will show you today: Its name is RemoteXY. Of course, it uses the Arduino IDE!

  13. Tomi Engdahl says:

    How to make TachoMeter using Arduino Uno and IR sensor | Tachometer | DIY video #shorts #diy

    This is a RPM calculating device that you can easily make using Arduino uno and IR sensor.

    →Requirements- Arduino (Uno/Nano), i2C LCD display, i2C LCD Module, Breadboard (not necessary), jumper wires(Both ends are male pin in my case) and any rotating object for speed testing.

    →Procedure- Upload the code to your Arduino Board using Arduino software by connecting to PC then connect as per the video.

    →Note- Improper connection may damage your board so be careful !!!


  14. Tomi Engdahl says:

    This portable, Arduino-powered device measures the speed of sound in gases to identify them:

  15. Tomi Engdahl says:

    Designed for the elderly, Naveen Kumar’s wearable prototype is able to detect falls using a Transformer-based model on the GIGA R1 WiFi. With its onboard connectivity, the device can also be configured to send out an alert notification to caregivers in real-time:

  16. Tomi Engdahl says:


    Mail your code to my microcontroller and see what happens via webcam.
    One hardware setup for many students, availability: Worldwide 24/7

    All you need to teach or study how to write code for a microcontroller is:
    1.) A computer that can be used to write and save simple text files
    2.) A microcontroller.

    Wait! Instead of buying a microcontroller, you can use mine even though I live thousands of miles away. All you have to do is:

    1.) Mail the text file with your code to my server
    2.) Wait until the resulting video appears automatically on my server’s page.

    The project teaches old technologies new tricks to teach new students how to do coding.


    My setup is as follows:

    An Arduino UNO (could be any microcontroller that can be programmed via command line tools) is connected to a Raspberry Pi (could be any computer running a Debian based Linux).

    The Raspberry Pi looks for new mail in fixed intervals (2 minutes or so) with “fetchmail”.

    If an Email with an attached *.ino file is detected, the attachment is compiled and the resulting hex file is uploaded to the Arduino UNO.

    In parallel with uploading the code, a webcam is started.

    After a given interval (1min), the recording it stopped and the resulting video file is stored on the Raspberry Pi

    The Raspberry Pi connects to my Internet server to upload the video file, the original code file and the updated webpage.


    On the website you can now (process takes about 5 to 10 minutes) watch what your code does on my Arduino UNO.

    To try it out, visit:

  17. Tomi Engdahl says:

    Fall detection using your phone and Arduino Cloud
    Use your phone’s sensors data and the Arduino Cloud to detect falls.

  18. Tomi Engdahl says:

    Uno Plus+
    An Arduino UNO Compatible Board with isolated Glowing headers and some Extras

    If its not broken don’t fix it, just add some more features.

    The Uno Plus+ is An Arduino Uno Compatible Board with a twist. All the components are on the bottom giving ample space to clearly label all the pins and even label the second and third function.

    The Goal of the Uno Plus+ it to take the Arduino Uno, and make it even easier to use. An by adding isolated LED indicators on the IO Pins Debugging and Teaching can be even easier for teachers and student in the STEM Field. With the addition of a Stemma/Quiic connector and an integrated addressable LED can speed the process of developing a Project.

    An as always this project is completely open source and all design files will be updated to the most current revision below. You can build your own Arduino comparable Uno+ and flash the Firmware with the instructions below.

  19. Tomi Engdahl says:

    Robotic Arm Controlled With Muscle Movement via EMG Signals
    By Ash Hill published 6 days ago
    This Arduino project takes us one step closer to a future with Gundams.

  20. Tomi Engdahl says:

    Arduino Missile Defense Radar System in ACTION

    Arduino Uno
    Raspberry Pi with Screen (optional)
    Ultrasonic Sensor
    A bunch of jumper wires
    USB Missile Launcher

  21. Tomi Engdahl says:

    Always forget to close your garage door at night? This MKR WiFi 1010-powered system will send you a text if it’s left open:

  22. Tomi Engdahl says:

    DART-E is an Arduino-based experimentation station for learning about trajectories and angles using Nerf darts:

  23. Tomi Engdahl says:

    Arduino-Powered Missile System Uses Ultrasound To Aim

    In the real world, missile systems use advanced radars, infrared sensors, and other hardware to track and prosecute their targets. [Raspduino Uno] on YouTube has instead used ultrasound for targeting for an altogether simpler desktop fire control solution.

    This fun build uses a common off-the-shelf USB “missile launcher” that fires foam darts.

    Arduino Missile Defense Radar System | Tutorial

  24. Tomi Engdahl says:

    The Remoteduino Nano Is A Tiny IR Remote That’s Truly Universal

    Universal remotes are extremely convenient if they work correctly. But setting them up can be quite a hassle: often, you need to browse through long lists of TV models, key in the codes on the remote with just a blinking LED as confirmation, and then pray that the manufacturer included the correct codes for all your equipment. IR isn’t a very complicated technology, however, so it’s perfectly possible to roll your own universal remote, as [sjm4306] shows in his latest project, the Remoteduino Nano. It’s a fully programmable IR remote that gives you maximum flexibility when emulating the codes for those obscure A/V systems scattered around your home.

    The remote runs on an ATmega328p in a tiny QFN package, which drives a standard 5 mm IR LED through a transistor. Eight buttons are available to the user, which can be freely mapped to any desired code. A five-pin header is included to program the ATmega through its serial port. However, this was mainly done to help debug – a user who only needs to program the device once would typically use a pogo-pin-based adapter instead.

    Remoteduino Nano

    Tiny DIY programmable IR remote that’s based off the arduino uno (backwards compatible with my orginal Remoteduino project)!


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