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.

683 Comments

  1. Tomi Engdahl says:

    Follow the Bouncing Ball of Entropy
    https://hackaday.com/2017/09/01/follow-the-bouncing-ball-of-entropy/

    When [::vtol::] wants to generate random numbers he doesn’t simply type rand() into his Arduino IDE, no, he builds a piece of art. It all starts with a knob, presumably connected to a potentiometer, which sets a frequency. An Arduino UNO takes the reading and generates a tone for an upward-facing speaker. A tiny ball bounces on that speaker where it occasionally collides with a piezoelectric element. The intervals between collisions become our sufficiently random number.

    ball-o-bol
    http://vtol.cc/filter/works/ball-o-bol

    Reply
  2. Tomi Engdahl says:

    Vibhear
    https://hackaday.io/project/26277-vibhear

    Vibhear, as assistive hearing device, ensures safeness for people with hearing loss, when hearing aid is not used or is not working.

    Reply
  3. Tomi Engdahl says:

    Jenkins Given an Industrial Stack Light for Build Reporting
    https://hackaday.com/2017/09/05/jenkins-given-an-industrial-stack-light-for-build-reporting/

    When working on software development in a team environment, it’s important to know the status of your build at all times. Jenkins can display build automation info on a screen but where’s the fun in that? A popular office project is to build some kind of visual display of a project’s status, and [dkt01] has done just that with this stack light build monitor.

    In this day and age of online shopping, random bits of industrial hardware are just an eBay away, so it’s easy to find some cool lamps or indicators for any project. [dkt01] sourced a standard 24V stack light off the shelf. With its green, red, and yellow indicators, its perfect for showing the current status of their build server.

    The project uses an Arduino Pro Micro combined with an ENC28J60 Ethernet adapter.

    However, for the purposes of this project, it was perfect for connecting to the wired office network

    Stack Light Monitor
    Jenkins build monitor using an industrial stack light as output.
    https://hackaday.io/project/26995-stack-light-monitor

    Because my team at work recently moved to a new location and we no longer have a visible spot for our Jenkins build monitor screen, I wanted to make a simple visual indicator of our project’s build status. I made a tree monitor last year, but it claimed a static IP (so it couldn’t be connected directly to the work network) and it required a computer actually query the Jenkins status and parse the responses. Plus, the holiday theme only really works a few months of the year.
    This iteration uses a 24V industrial stack light I found on eBay along with an Arduino Pro Micro and an ENC28J60 ethernet adapter to directly monitor a job on a Jenkins server. The Arduino hosts a web server for a configuration page and accepts new configurations via a RESTful API. It uses the Ethercard library to acquire a DHCP address on the network, perform DNS lookups, and send HTTP queries to the configured Jenkins server. The Arduino software parses the JSON responses from Jenkins to set color

    Reply
  4. Tomi Engdahl says:

    LinkTrucker
    https://hackaday.io/project/9229-linktrucker

    Inspired by other hardware, this Arduino UNO and ENC28J60 checks your Ethernet Link, DHCP, DNS, and connects to a server for < $25!

    External IP Address Tracker
    https://hackaday.io/project/2495-external-ip-address-tracker

    Arduino with an Ethernet shield is used to send an email to let you know when the external IP address of your internet connection changes
    bayres

    Reply
  5. Tomi Engdahl says:

    Arduino Watch Sport 2.0
    https://www.eeweb.com/project/arduino-watch-sport-2.0

    The arduino watch sport 2.0 is the new version of the watch that is developed using the well-known technology brought by arduino. It features a social management with mobile phones such SMS, messenger, whatsapp, and incoming call. In addition, it also features heart rate and oxygen saturation measurements, as well as time and date, temperature, sleep mode, bluetooth, and vibration level.

    This project is comprised of several parts in which it make use of SAM21 Mini Breakout board that is based on ATSAMD21G18 32-bit/48MHz ARM Cortex-M0+. This breakout board served as the main component in which the rest of the parts are connected and processed data. The display is an OLED 128×64 that receives and display the data processed and embedded from SAM21.

    Arduino watch sport 2.0 is an excellent project that is designed to be built with specific purpose and can be modified that exactly suits to the applications that are needed by anyone. Aside of time and date, the device is also suitable for health related applications.

    DIY Arduino Watch Sport 2.0
    http://www.instructables.com/id/DIY-Arduino-Watch-Sport-20/

    Reply
  6. Tomi Engdahl says:

    Powering an Arduino: A Shocking Twist
    https://www.eeweb.com/blog/max_maxfield/powering-an-arduino-a-shocking-twist

    Since I’m always creating weird and wonderful Arduino-based hobby projects, I now think of my new profile photo as being titled ‘Powering an Arduino: A Shocking Twist.’

    Reply
  7. Tomi Engdahl says:

    Super simple controller for Motorcycle LED lights
    https://hackaday.com/2017/09/09/super-simple-controller-for-motorcycle-led-lights/

    The availability of cheap, high-efficiency LED modules helps add additional lighting to the vehicle without adding a lot of burden on the electrical supply. If you want to add brightness control, you need to either buy a dimmer module, or roll your own. [PatH] from WhiskeyTangoHotel choose the latter route, and built a super simple LED controller for his KLR650 bike.

    He chose a commonly available 18 W light bar module containing six 3 W LEDs. He then decided to build a microcontroller based dimmer to offer 33%, 50% and 100% intensities. And since more code wasn’t going to cost him anything extra, he added breathing and strobe modes.

    Arduino / MOSFET Controlled High Bright LED Motorcycle Light
    http://www.whiskeytangohotel.com/2017/09/arduino-mosfet-controlled-high-bright.html

    Reply
  8. Tomi Engdahl says:

    Sub-$20 Arduino-Based Telemetry System
    https://hackaday.com/2017/09/12/sub-20-arduino-based-telemetry-system/

    [William Osman] set out to prove that unlike expensive commercial data logging rigs, he could get the same results for under twenty bucks. He wanted to build a wireless three-axis accelerometer for a race car project, allowing engineers to make modifications to the suspension based on the data collected.

    The hardware consists of an Arduino Pro Mini connected to a three-axis accelerometer, and an nRF24L01 wireless module. Power is supplied by the race car’s 12 V, changed to 5 V by a linear regulator with the Pro Mini in turn supplying 3.3 V. The base station consists of an Arduino and another nRF24L01 module plugged into a laptop.

    The telemetry system is based on COSMOS, an open-source, realtime datalogging platform put out by Bell Aerospace.

    COSMOS and Arduino: The $20 Telemetry System
    http://www.williamosman.com/2016/08/cosmos-and-arduino-20-telemetry-system.html?m=1

    Reply
  9. Tomi Engdahl says:

    Hackaday Prize Entry: Room-Tracking Red Vines Flinger
    https://hackaday.com/2017/09/13/hackaday-prize-entry-room-tracking-red-vines-flinger/

    [Vije Miller]’s Arduino Licorice Launcher is based on the simple and logical premise that one must always have a voice-activated Red Vines catapult in the workshop. When he calls out to the robot, it turns to aim at him and flings a piece of licorice at his head.

    Arduino Licorice Launcher
    https://hackaday.io/project/12893-arduino-licorice-launcher

    Reply
  10. Tomi Engdahl says:

    ArduShield – most Hacker shield for ARDUINO
    https://hackaday.io/project/9086-ardushield-most-hacker-shield-for-arduino

    ArduShield it is a development shield for most popular boards like Arduino UNO, Mini, Pro Mini, Nano, Micro, Leonardo and many others

    ArduShield it is most universal development shield for most popular Arduino boards like a Arduino UNO R3, Mini, Pro Mini V5, Nano V3, MicroR3, Leonardo, Yun, Zero, Galileo Gen2 and many other derivative boards created by great community of people.

    Idea for ArduShield was born out of the problem that hit several Arduino fans.

    First we found that we had many shields that fit only to Arduino UNO, but they don’t fit to Arduino Mini, Pro Mini, Nano and other type of smaller Arduino board. Smaller Arduino boards are much more cost effective then Arduino UNO, and we want to use them to.

    Second thing what most bother us over time, was when we have to start one more time re-wiring Arduino and bread board because of some small mistake which cannot be find. Idea was to shrink down amount of the cable between Arduino UNO and Bread Board minimum by half.

    Another useful thing about ArduShield is that you can have power supply to your bread board.

    ArduShield can be use like a programing tool for Arduino mini and Arduino Pro Mini. We know that both of this board require external programmer.

    Now ArduSHIELD is available here
    https://www.awesomepcb.com/product/ardushield-set-of-parts/

    Reply
  11. Tomi Engdahl says:

    Plotting-real-time-sound-sensor-data-from-Arduino
    This project is used for Plotting real time sensor data from Arduino using
    https://hackaday.io/project/27360-plotting-real-time-sound-sensor-data-from-arduino

    In this Project we are going to interface sound sensor to Arduino. and then we are going to plot the graph of those analog values using python. For that purpose we have connected our Arduino to Raspberry pi. So here Arduino is throwing data to raspberry pi through it’s serial port and we are using one python script in raspberry pi to plot the graph of those analog values.

    Reply
  12. Tomi Engdahl says:

    Dani Deahl / The Verge:
    Equifax customer service, tweeting from @Equifax, accidentally directed customers to a critic’s phishing site for over a week in at least three Twitter replies

    For weeks, Equifax customer service has been directing victims to a fake phishing site
    https://www.theverge.com/2017/9/20/16339612/equifax-tweet-wrong-website-phishing-identity-monitoring

    Earlier this month, hackers broke into Equifax’s servers and stole 143 million people’s personal information, including their Social Security numbers. In response to the attack, Equifax set up a website — http://www.equifaxsecurity2017.com — for possible victims to verify whether they’re affected. Because the process involves sharing sensitive information, consumers have to trust they’re entering their data in the right place, which can be tricky because the breach-recovery site itself isn’t part of equifax.com. If users end up on the wrong site, they could end up leaking the data they’re already concerned was stolen.

    Today, Equifax ended up creating that exact situation on Twitter. In a tweet to a potential victim, the credit bureau linked to securityequifax2017.com, instead of equifaxsecurity2017.com. It was an easy mistake to make, but the result sent the user to a site with no connection to Equifax itself. Equifax deleted the tweet shortly after this article was published, but it remained live for nearly 24 hours.

    Further research revealed three more tweets that had sent potential victims to the same false address, dating back as far as September 9th. These tweets have also since been deleted.

    Luckily, the alternate URL Equifax sent the victim to isn’t malicious. Full-stack developer Nick Sweeting set up the misspelled phishing site in order to expose vulnerabilities that existed in Equifax’s response page. “I made the site because Equifax made a huge mistake by using a domain that doesn’t have any trust attached to it [as opposed to hosting it on equifax.com],” Sweeting tells The Verge. “It makes it ridiculously easy for scammers to come in and build clones

    Equifax’s entire response to the breach has been a mess. The company’s website set off alarms for lawyers who worried it might waive victims’ right to sue the company, and the response phone line representatives actually had no information and just directed concerned consumers back to the website.

    An Equifax spokesperson says all tweets sent from their account with the wrong URL have been deleted. “All posts using the wrong link have been taken down. To confirm, the correct website is https://www.equifaxsecurity2017.com. We apologize for the confusion.”

    Reply
  13. Tomi Engdahl says:

    Arduino raw data 3.5″ Floppy reader
    Interfacing 3.5″ HD 1.44 MB Floppy drive through FDD connector with Arduino UNO
    https://hackaday.io/project/20185-arduino-raw-data-35-floppy-reader

    Reading 3.5″ floppies with Arduino UNO?

    Floppy disk is a magnetic medium. The data are stored on magetic disc, which is beeing rotated during the reading process. Speed of the rotation of disk is 5 times per second. There is a magnetic head that reads the transitions of a magnetic flux and they are (somehow) interpreted as logic states.

    Reply
  14. Tomi Engdahl says:

    Push Buttons, Create Music With A MIDI Fighter
    https://hackaday.com/2017/09/25/push-buttons-create-music-with-a-midi-fighter/

    Musicians have an array of electronic tools at their disposal to help make music these days. Some of these are instruments in and of themselves, and [Wai Lun] — inspired by the likes of Choke and Shawn Wasabi — built himself a midi fighter

    Midi fighters are programmable instruments where each button can be either a note, sound byte, effect, or anything else which can be triggered by a button. [Lun]’s is controlled by an ATmega32u4 running Arduino libraries — flashed to be recognized as a Leonardo — and is compatible with a number of music production programs.

    MIDI Fighter
    A MIDI controller with arcade push buttons and 32 RGB LEDs
    https://hackaday.io/project/27224-midi-fighter

    Reply
  15. Tomi Engdahl says:

    Tiny 8-bit VT100 Terminal Emulator
    Arduino Uno-powered text console on a tiny 1″x1″ TFT screen
    https://hackaday.io/project/27359-tiny-8-bit-vt100-terminal-emulator

    To enter command-line tasks on Mac/Linux/Windows we use a text console window. But back in the old days there was no window display at all, and the text console was actually a dedicated box with a CRT screen that would connect to the main computer over the wire – a terminal or TTY.

    I decided to build one of those using modern parts like the Arduino and make it as tiny as I can: I have several Arduino Pro Mini sticks, and have been itching to put them to use!

    There are several AVR-based terminal emulator projects, but I found difficulty adapting them to my display, a one-inch-square TFT based on the ILI9163C chipset. So I decided to hack together my own VT100 command parser and renderer, with intention to keep the code tidy, clear and extensible.

    Reply
  16. Tomi Engdahl says:

    Pyrotechnics sequencer with wireless trigger
    This device will light fireworks in sequence with a wireless remote. Version one will have 64 positions
    https://hackaday.io/project/27156-pyrotechnics-sequencer-with-wireless-trigger

    Reply
  17. Tomi Engdahl says:

    PID Controlled Charcoal BBQ – Put an Arduino on it!
    https://hackaday.com/2017/09/27/pid-controlled-charcoal-bbq-put-an-arduino-on-it/

    At Maker Faire Milwaukee this past weekend, [basement tech] was showing off his latest build, a PID controlled charcoal grill. While it hasn’t QUITE been tested yet with real food, it does work in theory.

    PID (a feedback loop with some fancy math used to adjust the input to get a consistent output) controlled cooking is commonly used for sous vide, where one heats up a water bath to a controlled temperature to cook food in plastic bags. Maintaining water temperature is fairly easy. Controlling a charcoal barbecue is much more difficult. [basement tech] accomplishes this with controlled venting and fans. With the charcoal hot and the lid on, there are two ways to control temperature; venting to let hot air out, and blowing air on the coals to make them hotter. A thermocouple sensor stuck through the grill gives the reading of the air inside, and an Arduino nearby reads that and adjusts the vents and fans accordingly.

    Weber charcoal grill automation & MKE Makerfaire prep
    https://www.youtube.com/watch?v=zS59ZTs4JmM

    Reply
  18. Tomi Engdahl says:

    Cheap DIY MIDI to USB Adapter
    https://hackaday.com/2017/09/26/cheap-diy-midi-to-usb-adapter/

    He used a Teensy LC to build one for himself and it did the job quite well. But he needed several converters, and using the Teensy LC was going to cost him a lot more than he was willing to spend. With some tinkering, he was able to build one using an Adafruit Pro Trinket which has onboard hardware UART (but no USB). This lack of USB support was a deal killer for him, so after hunting some more he settled on a clone of the Sparkfun Pro Micro. Based on the ATmega32U4, these clones were just right for his application, and the cheapest to boot. He reckons it cost him about $5 to build each of his cheap USB MIDI adapters which receive notes and pedal data from the keyboard’s MIDI OUT and transmit them to a computer

    $5 USB MIDI adapter with ATmega32u4
    http://codeandlife.com/2017/09/17/5-usb-midi-adapter-with-atmega32u4/

    The ATmega32u4 board I previously showed how it can be made into USB HID mouse. Let’s see how to turn it into a USB MIDI adapter!

    Reply
  19. Tomi Engdahl says:

    Sound Reactive LED Lights
    LED Lights which literally dance to the tunes you play!
    https://hackaday.io/project/27488-sound-reactive-led-lights

    Processing+Arduino based, sound reactive LED Lights. Uses Minim sound library of processing

    Reply
  20. Tomi Engdahl says:

    Simple Concurrent Tones for the Arduino
    https://hackaday.io/project/27429-simple-concurrent-tones-for-the-arduino

    The Arduino tone library does not support concurrent multiple tones.
    Now I am sure someone has done this before but here is my take.

    Reply
  21. Tomi Engdahl says:

    An Arduino Weather Station With An E-Ink Display
    https://hackaday.com/2017/09/27/an-arduino-weather-station-with-an-e-ink-display/

    For our Northern Hemisphere readers the chill winds of winter are fast approaching, so it seems appropriate to feature a weather station project. Enjoy your summer, Southern readers!

    [Fandonov] has created a weather station project with an Arduino Uno at its heart and a Waveshare e-ink display as its face to the world, and as its write-up (PDF) describes, it provides an insight into both some of the quirks of these displays, and into weather forecasting algorithms.

    https://github.com/fandonov/weatherstation

    Reply
  22. Tomi Engdahl says:

    Fine-Tuning Arduino Sketches: S/W Guru Required
    https://www.eeweb.com/blog/max_maxfield/fine-tuning-arduino-sketches-s-w-guru-required

    Are you the software guru who is going to bring tears of joy and smiles of delight to Arduino users around the world?

    Reply
  23. Tomi Engdahl says:

    ArduShield – most Hacker shield for ARDUINO
    https://hackaday.io/project/9086-ardushield-most-hacker-shield-for-arduino

    ArduShield it is a development shield for most popular boards like Arduino UNO, Mini, Pro Mini, Nano, Micro, Leonardo and many others boards

    Now ArduSHIELD is available here
    https://www.awesomepcb.com/product/ardushield-set-of-parts/

    ArduShield it is most universal development shield for most popular Arduino boards like a Arduino UNO R3, Mini, Pro Mini V5, Nano V3, MicroR3, Leonardo, Yun, Zero, Galileo Gen2 and many other derivative boards created by great community of people.

    Reply
  24. Tomi Engdahl says:

    EtherGeiger
    https://hackaday.io/project/2932-ethergeiger

    Remote sensor of ionizing background radiation, utilizing AVR microcontroller, ENC28J60 Ethernet chip and old, soviet Geiger tube.

    It’s good to know a radiation level in your neighborhood, but carrying Geiger counter around is a little bit uncomfortable and can attract unwanted attention. ;) With this things in mind I decided to build my own Ethernet enabled Geiger counter. I used old STS-5 detector tube, manufactured few decades ago in Soviet Union. Voltage converter is supplying tube with 400V, needed for its normal operation. Pulses generated by the tube are amplified by opamp and then counted by Atmega 328 microcontroller. Communication with device is based on a popular ENC28J60 controller chip and simple TCP/IP stack from tuxgraphics.org.

    Reply
  25. Tomi Engdahl says:

    AVR CNC PROJECT
    https://hackaday.io/project/6419-avr-cnc-project

    This is a cnc I made using the atmega 328 p chip and pure AVR-C to make it all work.

    Reply
  26. Tomi Engdahl says:

    Single Chip AVR BASIC Computer V0.3
    https://hackaday.io/project/2428-single-chip-avr-basic-computer-v03

    A computer running BASIC, generating composite video and reading PS/2 keyboard input using a single ATmega microcontroller

    Reply
  27. Tomi Engdahl says:

    Rocking Playmobil Wedding
    https://hackaday.com/2017/10/04/rocking-playmobil-wedding/

    Many of us have put our making/hacking/building skills to use as a favor for our friends and family. [Boris Werner] is no different, he set about creating a music festival stage with Playmobil figures and parts for a couple of friends who were getting married. The miniature performers are 1/24 scale models of the forming family. The bride and groom are on guitar and vocals while junior drums.

    Automation was a mix of MOSFET controlled LEDs for the stage lighting, addressable light rings behind the curtain, a disco ball with a stepper motor and music, all controlled by an Arduino.

    Tinkering Tuesday – Playmobil Stage – Introduction
    http://www.boriswerner.eu/tinkering-tuesday-playmobil-stage-introduction/

    Reply
  28. Tomi Engdahl says:

    WALTER – The Arduino Insect Robot
    https://www.eeweb.com/project/walter-the-arduino-insect-robot

    The WALTER – The Arduino Insect Robot is one of the robotic projects that mimic insect movements. This robot capabilities can be considered already as part of the development of artificial intelligence nowadays. It features obstacle avoidance, light attract, and random rest abilities that are quite similar to the behavior of insect.

    WALTER – The Arduino Insect Robot project obviously involve an arduino product, which is the Arduino Pro Mini in which serves as main controller of this robotic insect. WALTER uses five servo motors in order to move its front right leg, front left leg, middle or its shaft connected to the two back servos, back right leg, and back left leg.

    WALTER – The Arduino Insect Robot (light chasing simple quadruped)
    https://www.youtube.com/watch?v=ellRidf0aRk

    Reply
  29. Tomi Engdahl says:

    WALTER – The Arduino Insect Robot
    http://chaoticvoltage.blogspot.fi/2016/12/walter-arduino-insect-robot.html

    I really like the popular set-up of 2 servos arduino insects on youtube. When I looked at it, I always remember what BEAM robotic guys did long before that set-up became favorite. These people who are analog robot fanatics did better on the gait due to better angle between the two motors (microcore /bicore walker, etc).

    However, in my opinion, none of those mentioned before look more alive than VBug1.5 (also known as Walkman) created by the founder of beam robotic, Mark Tilden. It’s using 5 motors, therefore it has more maneuverability.

    BEHAVIORS
    Like many other arduino robots, Walter can avoid obstacles using HC-SR04 ultrasonic sensors. To add character as a bug, Walter also a photovore, means he is attracted to light. Photodiodes are used to detect light. There are random values generated in the arduino sketch to make Walter decides when he wants to stop to rest, and also to randomly changes his gait speed (3 speeds).

    BILL OF MATERIALS

    Controller: Arduino Pro Mini (5v, 16MHz)
    Sensors:
    3x HC-SR04 Ultrasonic Sensors
    4x Photodiodes (5mm)
    4x 100kΩ resistors
    Actuators: 5x MG90S Metal Geared Micro Servos
    Power: 5200 mAH portable power bank for smartphone (2 channel output, 1 A and 2.1 A)
    Some wires and female header connectors
    2x USB A connectors
    Toggle switch
    Coat hanger or any thin metal rod you can bend to make legs
    A lot of glue (hot glue gun, super glue, and plastic steel / epoxy glue)

    Reply
  30. Tomi Engdahl says:

    How to make a Homework machine for Students
    https://www.youtube.com/watch?v=0sT3qlGAV_U

    Learn- how to make a drawing of homework writing machine for student using arduino nano micro controller Component 1. 2x Old PC DVD Writer 2. Arduino nano 3. Servo motor 4. L293D IC 5. Prototyping Board

    Reply
  31. Tomi Engdahl says:

    Nematoduino: A Roundworm Neural Model on an Arduino
    https://hackaday.com/2017/10/13/nematoduino-a-roundworm-neural-model-on-an-arduino/

    When it comes to building a neural network to simulate complex behavior, Arduino isn’t exactly the first platform that springs to mind. But when your goal is to model the behavior of an organism with only a handful of neurons, the constraints presented by an Arduino start to make sense.

    It may be the most important non-segmented worm you’ve never heard of, but Caenorhabditis elegans, mercifully abbreviated C. elegans, is an important model organism for neurobiology, having had its entire nervous system mapped in 2012.

    Arduino UNO-compatible robotic simulation of the C. elegans nematode
    https://github.com/nategri/nematoduino

    Nematoduino is an Arduino UNO-compatible robotic simulation of the C. elegans nematode.

    At the core of the simulation is a spiking neural network incorporating 300 neuron cells of the biological worm’s connectome, along with associated muscle cells. This implementation is based on prior work [1], but with the following improvements:

    A compressed representation of the connectome network (8 kilobytes)
    Ability to run on the extremely flexible Arduino UNO platform
    A biologically motivated conntectome-motor interface

    In its current form the nematoduino software consumes 13542 bytes (42%) of the program memory of an UNO-compatible board, and 825 bytes (40%) of the SRAM, leaving plenty of room for experimentation and further development. It’s my hope that nematoduino will end up in the hands of a lot of students and neurorobotics hobbyists!

    Reply

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