This is a guest post from Viktor Petersson, CEO of Screenly.io. Screenly is the most popular digital signage product for the Raspberry Pi. Find Viktor on Twitter @vpetersson.

In the previous blog post, we talked about how we compile Qt for Screenly OSE using Docker’s nifty multi-stage and multi-platform features…


For those not familiar with Qt, it is a cross-platform development framework that is used in a wide range of products, including cars ( Tesla), digital signs ( Screenly), and airplanes ( Lufthansa). Needless to say, Qt is very powerful. One thing you cannot say about the Qt framework, however…


This is a guest post from Viktor Petersson (@vpetersson) who discusses how Screenly uses Prometheus to monitor the thousands of Raspberry Pis powering their digital signage network.

At Screenly, we are long-time Kubernetes fans, and we use Prometheus to monitor our infrastructure. Many, if not most, Kubernetes teams also use…


A few years ago, I created a people tracker called Sonar and open sourced it. The goal of the project was to monitor foot traffic in retail environments. After deploying it and more or less forgetting about it for almost two years, I was reminded about it last month and…


My philosophy for home automation from the start has been that the best UI is no UI, meaning that I just want things to work automagically. I don’t want to fiddle buttons or software on a day-to-day basis. Sensors and automation should do most of the work.

In addition to…


sudo is a tool used by most Linux/UNIX users on a daily basis to escalate permission. If you're like me, you likely though that the features in sudo were "done" and final, just like you don't monitor the the changelog for new features in tar (or at least I'm not).


Security is a complicated topic. There are countless of attack vectors and threat models to take into consideration when designing a security strategy.

Over the last year, we’ve spoken to companies of different sizes about their security strategies and practices. Based on these discussions, we’ve come up with something we…


There’s no doubt that GitHub has become one of the most popular platforms for developer collaboration and communication. Increasingly, GitHub is also used for project management across developer and Dev(Sec)Ops teams. Because of this, it is increasingly where the security fixes are being tracked too.

For instance, GitHub recently announced…


In this interview on remote work, I’m speaking to John Agosta from Canonical (the company behind Ubuntu). As a long-time Canonical team member, John and my paths have crossed multiple times over the years, starting when I was at a cloud company, and he was at the server division at…


Security has been an interest for me for a long time. This is why Pwnagotchi peaked my interest. Using cheap hardware, you can create your own lightweight WiFi (and Bluetooth) sniffing device. …

Viktor Petersson

CEO and Co-founder of @WireLoad / @ScreenlyApp. #DigitalNomad #Entrepreneur #Speaker #Geek #Cloud #DevOps

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