Comment fabriquer un détecteur de CO2 pour favoriser l’aération d’un local
▻http://nousaerons.fr/makersco2?s=09
— Permalien
Comment fabriquer un détecteur de CO2 pour favoriser l’aération d’un local
▻http://nousaerons.fr/makersco2?s=09
— Permalien
Basic Arduino Web Server (▻https://pimylifeup.com/arduino-web-server)
▻https://diasp.eu/p/7996493
Basic Arduino Web Server
#arduino projects
Building Your Own #ethereum Hardware Wallet For $5
▻https://hackernoon.com/building-your-own-ethereum-hardware-wallet-for-5-c85fe7405276?source=rss
In this post we will build Firefly hardware wallet.It’s an open-source, affordable, air-gapped hardware wallet for Ethereum you can build at home for around $5 in parts.Here is a short video of its final working model.▻https://medium.com/media/d64d81e63769cca50f33c890343c2d8b/hrefHere are some of its features:Low Cost: Build it yourself for about $5 with an #arduino, a 2.4GHz radio, an OLED display and a few odds and ends.Air Gapped: Not connected by wires and cannot send wireless signals, keeping your private key safe from hackers.Mobile Friendly: Works with any smart phone to prepare and send transactions or sign secure messages.Let’s make one for yourselfThere are a lot of options and flexibility when building a Firefly. You may design your own case or use one of our 3D printable cases. To (...)
Feedback & Odometry: #coursera’s Control of Mobile Robots with ROS and ROSbots — Part 3
▻https://hackernoon.com/feedback-odometry-courseras-control-of-mobile-robots-with-ros-and-rosbot
Welcome to part 3 of our multi-part Coursera’s Control of Mobile Robots (CMR) series. This series implements concepts learned from CMR with ROS and a ROSbots robot.About ROSbotsROSbots is a ROS + OpenCV robot kit for Makers. Based off a Raspberry Pi and #arduino-compatible UNO board, the ROSbots robot kit caters to a Maker’s desire by being extremely hackable to implement any new #robotics concepts you come across. All our code is open source on Github.Previously in Part 2, What‘s in Part 3Back in part 2 of our Control of Mobile Robots series, we wrote about the convenience of using a Unicycle Model to intuitively represent robot dynamics. But since our ROSbots robot is a differential drive robot, we need to talk about how the Unicycle Model relates to the Differential Drive Model dynamics. (...)
Read #arduino Serial Monitor Using #nodejs
▻https://hackernoon.com/arduino-serial-data-796c4f7d27ce?source=rss----3a8144eabfe3---4
This is a short tutorial article on how to read the serial port values from arduino to in NodeJS.MotivationSo, there was a project I was working on where I had to fetch the data from serial monitor in my node console and then using web sockets display the data in a web based application. But, I was having a hard time figuring out how to fetch the data, I explored and found serialport npm module, but the output it gave was in form of buffer, not the exact word I wanted. After spending some time, I was able to figure out how to do it. Hence, I am sharing this so that it can help anyone who is trying to do the same.How does arduino and other peripherals communicate with Laptop?In most of the cases, the answer is “Serial Communication”. With serial communication, the data can be sent bit by (...)
Unicycle to Differential Drive: #coursera’s Control of Mobile Robots with ROS and ROSbots — Part 2
▻https://hackernoon.com/unicycle-to-differential-drive-courseras-control-of-mobile-robots-with-r
Welcome back to Part 2 of our multi-part Coursera’s Control of Mobile Robots (CMR) series. This series implements concepts learned from CMR with ROS and a ROSbots robot.ROSbots is a ROS + OpenCV robot kit for Makers based off a Raspberry Pi. The robot kit is designed to be an accessible and extremely hack-friendly platform for breadboarding, adding other sensors and actuators to implement any new #robotics concepts you come across. Our code is open source on Github.The kit takes about an hour to assemble. To avoid the pains of compiling ROS and OpenCV yourself, we have a Raspbian ROS + OpenCV SD card image you can download and use.In Part 1 of our series, we wired up the ROSbots’ L9110 motor driver and implemented the ROS node to have the UNO board drive our robot’s wheels. The ROS firmware (...)
AgroTIC » Un capteur frugal et open source pour mesurer la hauteur et la température des couverts végétaux
▻http://www.agrotic.org/blog/un-capteur-frugal-et-open-source-pour-mesurer-la-hauteur-et-la-temperature-
Un article scientifique publié par deux chercheurs de l’USDA Agricultural Research Service (Crop Production Systems Research Unit, Stoneville, USA). Cet article mérite d’être souligné à plusieurs égards :
a) il montre le potentiel des projets comme arduino pour développer des systèmes de mesures sophistiqués embarqués avec un faible coût (260 €),
b) il démontre l’impact que peut avoir le monde de l’open source pour diffuser des innovations de pointe en proposant un ensemble de ressources, de liens, etc. permettant de reconstruire ce système,
c) il démontre qu’il est possible d’accéder à des informations évoluées (hauteur de la végétation, température de la végétation) et de les cartographier avec des solutions à faible coût,
d) il met en évidence la nécessité de développer de nouvelles compétences, de nouvelles organisations pour accompagner les agriculteurs dans la découverte, la fabrication et la co-conception de solutions évoluées de ce type,
e) il montre enfin que les outils d’agriculture de précision sont aussi accessibles pour des petites exploitations (à condition de mettre à disposition les compétences pour les accompagner dans la conception, la fabrication et la mise en oeuvre de cette démarche)
L’article propose une description complète des capteurs, de leur montage, des ressources utilisées, etc. pour reproduire le systéme de mesure présenté.
L’article en anglais > ▻http://www.scirp.org/journal/PaperInformation.aspx?paperID=80090
#frugalité #agriculture_vraiment_intelligente #arduino #open_science
Démontage d’un drone, Épisode 3 : La revanche de la télécommande. - Geekoblog
▻https://geekolloc.fr/site/index.php?article7/demontage-d-un-drone-episode-3-la-revanche-de-la-telecommande#comments
Sur la télécommande, un bus SPI communique entre la puce principale (un PIC ?) et le composant radio (probablement un XN297). J’ai utilisé un Arduino Nano pour écouter sur le bus et afficher en temps réel sur mon PC les trames SPI.
KeySweeper: RF-based keystroke sniffer for Microsoft Wireless Keyboards, disguised ad USB charger (Samy Kamkar)
KeySweeper is a stealthy Arduino Pro Mini-based device, camouflaged as a functioning USB wall charger, that wirelessly and passively sniffs 2.4Ghz, decrypts, logs and reports back (over 2G GSM) all keystrokes from any Microsoft wireless keyboard in the vicinity.
All keystrokes are logged online and locally on flash storage. SMS alerts are sent upon trigger words, usernames or URLs, exposing passwords. If unplugged, KeySweeper continues to operate using its internal battery and auto-recharges upon repowering. A web based tool allows live keystroke monitoring.
The video is very interersting and gives you the details about the construction of the device.
The souce code can be found here:
Even thought it already surfaced in January 2015,
▻http://arstechnica.com/security/2015/01/meet-keysweeper-the-10-usb-charger-that-steals-ms-keyboard-strokes
it is only recently that the cyber division of the FBI issued an alert about it because more than just Microsoft wireless keyboards are vulnerable to the device.
Wireless Keystroke Logger Disguised as USB Device Charger Targets Wireless Keyboards
▻https://publicintelligence.net/fbi-keysweeper
The pdf:
▻https://info.publicintelligence.net/FBI-KeySweeper.pdf
“If placed strategically in an office or other location where individuals might use wireless devices, a malicious cyber actor could potentially harvest personally identifiable information, intellectual property, trade secrets, passwords, or other sensitive information,” the advisory says. “Since the data is intercepted prior to reaching the CPU, security managers may not have insight into how sensitive information is being stolen.”
Remark from the builder of the device since that FBI publication:
“The interesting thing to note is that when I released KeySweeper, only 1 out of 11 of their wireless keyboards had AES encryption. I’m looking now, and I believe all but one now have AES encryption,”
▻https://threatpost.com/fbi-mum-on-real-world-keysweeper-attacks/118260
Farmbots Makes Growing Food Easier #Arduino « Adafruit Industries – Makers, hackers, artists, designers and engineers !
▻https://blog.adafruit.com/2015/12/29/farmbots-makes-growing-food-easier-arduino
Farmbot is the first open source cnc farming machine with the aim to create an open and accessible technology aiding everyone to grow food and to grow food for everyone. It runs on open source hardware like Arduino Mega 2560 and involves a community of contributors on the wiki and forum where you can find documentation, schematics, assembly guides, troubleshooting tips and many more on all currently supported and old FarmBots.
▻https://www.youtube.com/watch?v=gDocKosjY0I&feature=youtu.be
Première fois que je vois ça. C’est bizarre j’ai l’impression que cet exemple par de l’agriculture industrielle, pour passer par l’autoproduction mais en gardant cette séparation par rapport à la production (en gros on met pas les mains dans la terre, on pilote depuis une sorte de jeu sur écran). Du coup je comprends pas la niche.
#jardinage_cyborg #potager #diy ?
Le marteau de Thor crée grâce à un système d’aimant et d’un scanner d’empreinte.
▻http://www.numerama.com/pop-culture/126515-un-ingenieur-cree-le-marteau-de-thor.html
Une mini graveuse laser fabriquée à partir d’anciens graveurs de DVD | {niKo[piK]}
▻http://www.nikopik.com/2015/07/une-mini-graveuse-laser-fabriquee-a-partir-danciens-graveurs-de-dvd.html
"Maintenant que quasiment plus personne ne grave de DVD de nos jours, que faire de nos anciens graveurs de DVD pour ordinateur ?"(Permalink)
Jewelbots: Friendship Bracelets That Teach #Girls To #Code
▻https://www.kickstarter.com/projects/1345510482/jewelbots-friendship-bracelets-that-teach-girls-to
Beautiful step-by-step explanation of 433MHz ASK wireless door bell #SDR signal analysis with GNU #Radio Companion & #Arduino prototype
▻https://bytebucket.org/rootbsd/433mhz-ask-signal-analysis/raw/5f4937e4efb2198abcc375b8aefee41421941fca/pdf/433MHz_ASK_sginal_analysis-Wireless_door_bell_adventure-1.0.pdf #GRC #RTLSDR
High speed #M&M sorting machine
▻http://www.reviewmylife.co.uk/blog/2014/12/22/high-speed-mandm-sorting-machine #Arduino
Or this one, built with #Lego #Mindstorm... ▻https://www.youtube.com/watch?v=sVZQkEzXInM
And this one is dual-purpose - it has a setting to sort M&M or #Skittles !
#MicroView - OLED #Arduino Module - DEV-12923 - SparkFun Electronics
▻https://www.sparkfun.com/products/12923
The MicroView is the first chip-sized Arduino compatible module that lets you see what your Arduino is thinking using a built-in OLED display. 64x48 pixel
RFC 7228 : Terminology for Constrained Node Networks
Il existe désormais de nombreux protocoles et donc de nombreux documents (par exemple des RFC) pour les objets limités (en puissance de calcul, en énergie, en capacité réseau...). L’Internet, conçu d’abord pour de gros ordinateurs alimentés en permanence, s’adapte de plus en plus à ces objets limités. D’où l’importance d’une terminologie standard : ce nouveau #RFC définit un certain nombre de termes utilisés dans la normalisation de protocoles pour ces petits objets.
How to trigger an alarm when toilet paper is low?
▻http://arduino.stackexchange.com/questions/564/how-to-trigger-an-alarm-when-toilet-paper-is-low
Anyone with kids knows they never help with the toilet paper. Anyone know how to track when it’s low or out and sound an audible alarm? I just don’t know what sensor to use that may help.
Some that came to mind are: by weight, by reflection (the color of the paper) or some laser tripwire - all right on the spool. I don’t mind building it, it’s just I don’t know which sensor. Anyone know which to use?
Des pistes :
Un (merveilleux) extrait de #snow_crash de #neal_stephenson :
▻http://soquoted.blogspot.fr/2006/03/memo-from-fedland.html
(extrait d’une note de service)
By way of introduction, let me just make a few general comments on this subject. The problem of distributing bathroom tissue to workers presents inherent challenges for any
office management system due to the inherent unpredictability of usage-not every facility usage transaction necessitates the use of bathroom tissue, and when it is used, the amount needed (number of squares) may vary quite widely from person to person and, for a given person, from one transaction to the next. This does not even take into account the occasional use of bathroom tissue for unpredictable/creative purposes such as applying/removing cosmetics, beverage-spill management, etc. For this reason, rather than trying to package bathroom tissue in small one-transaction packets (as is done with premoistened towelettes, for example), which can be wasteful in some cases and limiting in other cases, it has been traditional to package this product in bulk distribution units whose size exceeds the maximum amount of squares that an individual could conceivably use in a single transaction (barring force majeure). This reduces to a minimum the number of transactions in which the distribution unit is depleted (the roll runs out) during the transaction, a situation that can lead to emotional stress for the affected employee.
However, it does present the manager with some challenges in that the distribution unit is rather bulky and must be repeatedly used by a number of different individuals if it is not to be wasted.
Atelier Arduino au LabFab - La Cantine Numérique Rennaise
▻http://www.lacantine-rennes.net/events/atelier-arduino-au-labfab
Le 23/01 de 12h30 à 14, au #LabFab (École des beaux Arts)
Organisé par Télécom Bretagne, la Ville de #Rennes et la Cantine numérique rennaise.
#Arduino est une plateforme d’électronique ouverte, simple d’accès et peu couteuse créée pour permettre la création facile et à bas coûts d’interaction entre objets tangibles, personnes et réseaux. Cet atelier vous permettra de découvrir la plateforme et de la manipuler : faire clignoter des diodes, un détecteur de luminosité, un thermomètre numérique… Bref, d’apprendre les bases pour fabriquer ensuite à domicile tout ce qui vous passera par la tête.
Animation : Baptiste Gaultier, Télecom Bretagne – Hugues Aubin, Ville de Rennes.
Ouvert à tous et gratuit, venez avec votre ordinateur portable !
Merci de valider votre inscription avec le formulaire (atelier limité à 15 places)
Circuit Scribe: Draw Circuits Instantly by Electroninks Incorporated — Kickstarter
▻http://www.kickstarter.com/projects/electroninks/circuit-scribe-draw-circuits-instantly
Des ruches intelligentes open-source pour sauver les abeilles
▻http://www.numerama.com/magazine/27499-des-ruches-intelligentes-open-source-pour-sauver-les-abeilles.html
Ça c’est vachement cool :)(Permalink)