In Czech Republic, we really loves the voice assistants. Many members from GDG groups across the country took much effort to spread voice assistant topic to people living here. In Olomouc, we organized the first voice hackathon with nearly 40 attendees last year. This year, Martin Krcek organized the first global voice hackathon with 85 cities across the world involved.

Sadly, voice assistants are still domain of geeks and tech enthusiasts here. This is because Google Assistant can’t speak Czech language and until Google supports it, voice assistants will not be common in Czech homes. Back in May 2018 at…


For one of my projects I wanted to be notified when build starts and finished. I’m using Jenkins as a CI server and I know there is Slack Notification Plugin, but it seemed too much complicated for my purposes. I’ve decided to build simple alternative in Node.js, which I’ll use in my build pipeline.

I needed a CLI app, which sends message to one of my channels on Slack with build info like: current commit, version, build number, etc. Many of these info are from library env-ci, which gets build info from environment variables which are set by CI servers…


Have you ever want to build your action with Actions on Google but got overwhelmed with several required technologies? There are various steps in different services Actions on Google, Dialogflow, Firebase in documentation and inexperienced user could be confused. Don’t worry, I had the same problem. But as you get deeper, you’ll find that every service in this process makes sense.

  • Actions on Google — developer platform that lets you extend Google Assistant with your own actions
  • Dialogflow — platform for natural language understanding (NLU), which helps with building actions suitable for humans
  • Firebase — development platform which gives you…

At the moment when we, as an attendees of an awesome Google Developer Days 2017 in Krakow, received free Android Things kit, we’ve wondered how we’ll use it. As a members of coworking center Vault 42 we’ve decided to use it in this object.

CEO of the coworking center Radek Holík and me, head of the Google Developer Group Olomouc at Google Developer Days 2017 in Krakow.

Every member of coworking has access to the fresh coffee. The problem is that there is no classic espresso machine, but drip coffee machine for making a pot of coffee at a time. Making a coffee is a work for coworking staff, however they should know when the coffee is needed. Sure, there is an option…

Lukas Novak

Freelance full-stack software developer based in Olomouc, Czech. I focus on mobile apps with Kotlin, servers in Node.js. As a hobby, I build my smart home.

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