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DevFest is the biggest Google tech conference in Switzerland. All about machine learning, programming, emerging technologies and much more! GDG DevFests are large, community-run developer events happening around the globe focused on community building and learning about Google’s technologies.
This year i will be helping and organizing some of the side activities between the talk session. And i prepared a lot of stuff, enough for 11 screens!
Not everything is on pictures, NES and SNES classic are missing for example.
Named after its designer, Gert van Loo, the Gertboard is an IO expansion board for the Raspberry Pi with a lot of flexibility.
Plug the Gertboard into the GPIO header on your Raspberry Pi and you’re ready to start detecting and responding to events in the real world. Jumper wires (called “straps”) and pin jumpers are used to reconfigure the board in any number of ways. Whether you need to detect button presses or analog voltages, control motors or relays, the Gertboard is the ultimate tool for exploring the Raspberry Pi’s full I/O potential!
Plugs directly onto Raspberry Pi GPIO socket
Motor controller, capable controlling a motor bi-directionally, delivering 18V and 2A maximum
Dual-channel D-to-A converter, 8-bit
Dual-channel A-to-D converter, 10-bit
Onboard Atmel ATmega328 MCU for running off-board programs which are written, compiled and uploaded to Gertboard from Raspberry Pi
Even though everyone is talking about smart contracts and their advantages over traditional paper contracts, only a handful of people are addressing the elephant in the room: most of the businesses don’t know how to use smart contracts yet. Jincor is among those few who are trying to make smart contracts and other blockchain technologies more accessible to modern businesses. And anyone can chime in by joining the project’s public token sale, which starts today, on the 1st of December. Jincor is a …
This tutorial will show you how to accept Bitcoin on a website with SSL signed payment requests using Electrum, required is a shell access and enough permission to install electrum A webserver serving static HTML A SSL certificate (signed by a CA) Electrum version >= 2.6 Install dependencies: sudo apt-get install python3-setuptools python3-pyqt5 python3-pip Install Electrum: sudo pip3 install https://download.electrum.org/3.0.3/Electrum-3.0.3.tar.gz then run on your server electrum create electrum daemon start electrum setconfig ssl_privkey /etc/letsencrypt/live/xxxxxx.com/privkey.pem electrum setconfig ssl_chain /etc/letsencrypt/live/xxxxxx.com/cert.pem electrum setconfig …
work in progress - daily update - a more convenient online version is also hosted at https://github.com/cedricwalter/Securing-Crypto-Assets Pull requests are welcomed! Feedback is welcome in comments section, or through my contact form click on map, to view in full size …
La blockchain est annoncée comme une révolution technologique, économique, politique et sociétale aussi puissante qu’Internet. Cette « chaîne de blocs » promet d’être l’outil incontournable de demain. À quoi sert la blockchain ? Cette nouvelle technologie permet avant tout d’envoyer de l’argent en ligne sans intermédiaire : ni banque, ni compagnie de carte de crédit. Elle pourrait bouleverser la finance, l’assurance et le transfert d’argent tout en étant le moteur d’un vaste mouvement de décentralisation de l’économie numérique. Grâce à elle, certains rêvent …
Blocks & Transactions Transaction data is permanently recorded in files called blocks. They can be thought of as the individual pages of a city recorder's recordbook (where changes to title to real estate are recorded) or a stock transaction ledger. Blocks are organized into a linear sequence over time ("Miner" or "Worker") also known as the block chain). New transactions are constantly being processed by Miners (into new blocks which are added to the end of the chain and …
Feathercoin is a powerful open source digital currency with monetary properties linked to Bitcoin, Litecoin and a myriad of countless alt coins, but under the hood is something very different. Feathercoin is a highly upgraded and customised piece of software compared to the Bitcoin and Litecoin protocols. Based from Bitcoin, Litecoin evolved, from which Feathercoin was born, with the intent to expand, experiment, and build onto the blockchain technology in a manner open to all for participation. Just over one …
XMR-Stak is a universal Stratum pool miner. This is the NVIDIA GPU mining version; there is also an AMD GPU version, and a CPU version. Docker® containers are often used to seamlessly deploy CPU-based applications on multiple machines. But Docker Engine does not natively support NVIDIA GPUs with containers. I have dockerized the Nvidia GPU-mining version, so it is now running in nvidia-docker. Containerizing GPU applications provides several benefits, among them: Reproducible builds Ease of deployment Isolation of individual devices Run across heterogeneous …
Notes A Docker image is a lightweight, stand-alone, executable package of a piece of software that includes everything needed to run it: code, runtime, system tools, system libraries, settings. Available for both Linux and Windows based apps, containerized software will always run the same, regardless of the environment. Containers isolate software from its surroundings, for example differences between development and staging environments and help reduce conflicts between teams running different software on the same infrastructure. A container is a runtime …