System76 Lemur Review

This is something that I’ve never done before in this blog, Review a piece of consumer electronics. 😀

read the full review

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XLS to CSV

A common situation for us (people in the programming/computing/processing world) is that we don’t always work with the same tools as some of our non-tech peers.

Case in point, I received a big bunch of files in XLS/XLSX format, very big files, LibreOffice has trouble working with them. Since I want to perform quick processing on that data, and I already have scripts that process similar data in CSV, the simplest path is to transform those files to plain, ugly, useful CSV files.

Then again, there are 100 files, and I don’t feel like dancing around each one: opening, clicking save as, selecting CSV, telling LibreOffice that this is a semicolon separated CSV file … etc etc.

Entering pandas.

continue please

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DBPedia Daily Map

dbpediamaplogo

I am pleased to announce the DBPedia Places map. Since I wrote my master thesis about vague places I wanted to do something like this. The vague-places generator was one of the outputs of such work, but I felt the need to see DBpedia points on a map, changing every day.

The final result can be poked at the dbpediamap.tk, this post is an overview of how this small project works.

As a quick taste, here’s a screenshot showing a dataset presented on the website:

DBpedia viewer USA

DBpedia viewer USA

Explain me a little bit more

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Europe DbPedia 2017

europeflagdbpedia
I was kind of bored while doing some work, and just past week we were discussing with a colleague about my vague-places project.

This project was forgotten in time, but today I’ve blown the dust away, recovered it, and updated the Europe DbPedia map.

Image overview

Most of you won’t be interested in the full story. So here, see a set of results. If something picks your interest (like, why Portugal has almost no points) just keep reading 😀

Keep Reading

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DuckDuckGo Things

images-duckduckgo-com

Heya. This is a light post about a the search engine DuckDuckGo.

Day to day we (I) use Google to search stuff. There’s a lot of alternatives, but the most appealing one is DuckDuckGo. This search engine combines a good set of results, it does not track you (so they say), and has a set of special features. I want to highlight some of its features here. Unluckily nobody paid me to do so 😛

The Duck’s features

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Cortex-M0 Boot

stm32f0_img

Still alive and kicking. And with another year in my back in Embedded Development.

My recent tamperings have been about creating a bootloader for a Cortex-M0 µ-processor that performs firmware update either from UART or SPI.

There was a interesting bit on how to set-up the system to have two Firmwares running (Boot Mode and application mode). And that is what I’ll explain in this post. How to set up a project to build a boot and successfully run your main application.

Boot me up

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Filed under code, electronic