Wojtek @suda Siudzinski


ObjC/Python/Node developer, DIY hacker, rookie designer, 3D print junkie. CEO @ Issue Stand, Senior Full Stack @ Particle


  1. Build, tag and push Docker images using Travis CI

    Docker Hub has Automated Builds capability to automatically build an image when you push changes to repository. It does its job perfectly. But sometimes you need more control over this process like tagging or triggering build of dependent images. You can do this by using Travis CI and adding following…


  2. Backup CoreOS's data volumes

    Yaron made a great Docker image for creating backups using Duplicity. It's designed to make backups of host directories, but what I wanted is to backup other container's volumes. You can do this with this CoreOS unit file: [Unit] Description=Backup After=docker.service Requires=docker.service [Service] User=core…

    on docker, coreos, data volumes, etcd

  3. Copy data from one data volume to another

    Recently I've played around with Docker and CoreOS I made some mistakes in the beginning. When I discovered that my data volume is based on the same image as the container which is supposed to use it (therefore wasting disk space) I wanted to move my data from the old…

    on docker, coreos, data volumes

  4. Place your profile on 3D printed coins

    Some time ago our friend Maciej introduced us to a great card game called Coup. When we purchased localised version it turned out that instead of coins, it contains separate cards with "current balance" fields which you should navigate using a small marker. It's not very usable and isn't as…

    on 3d printing, coup, coins, photoshop, openscad, card games

  5. Mirror with NeoPixel lights

    Couple months ago I promised Ola that I'll pimp up her Ikea TRENSUM mirror with some lights. After a bit of time and failed attempts of mounting LEDs on a ring I decided to use Adafruit's NeoPixel ring which has perfect diameter for this mirror (coincidence? I don't think so.…

    on arduino, ikea, trensum, ikeahacking, neopixel, adafruit, trinket

  6. Spark Core powered automatic pill dispenser

    Last weekend @chojnac and I, went to PayPal's Battle Hack 2014 Warsaw. Our hack was a hardware pill dispenser using two servos and a Spark Core. Construction Dispenser is made out of 4 plates: First plate (from the top) Glued with four tubes acts as pills storage and feeder. It…

    on spark, core, 3d printing, hackathon, medsgenie