Adafruit PCB ruler. Available at: Attribution-NonCommercial-ShareAlike 2.0 Generic (CC BY-NC-SA 2.0)

PCB Rulers

I was bored and made a list of PCB Rulers. Continue reading


Linux tracing and perf tools

In this 18min presentation, Brendan Gregg show us some great tools and resources for linux debugging, tracing, and profiling. He starts by introducing his own tools, all based in ftrace and perf, and then shows how BPF works and the front-end tools provided by BCC.  In this post I copy-pasted the tools’ descriptions and the full presentation is available at the LISA16 conference website.

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Design for Manufacture–DFM–to-PCB-development-

Howto: open source

While I’ve been studying about open source projects, I found this very interesting reference about creating and maintaining an open source initiative: Producing Open Source Software by Karl Fogel. The book is available at:

Karl compiles a list of resources and learnings about how to run an OSS project: techinical issues, communication, political and social environment, etc.




Arduino Yún

Hardware Description

Getting Started Guide

Some Inspiring Projects


Related Libraries