Sigbla on Blog of Christian Felde

4 years developing an API

Sun, 21 Jul 2024 20:16:59 +0000

Towards the end of 2019 I started developing Sigbla. And just now, around half way through 2024, I released the first beta version. It’s a Source Available type of software, different from Open Source, but still developed in the open. But it wasn’t until towards the end of 2023 I even put it up on GitHub.

In other words, a very slow process. And all just to be able to put some numbers in a table!?

Data wrangling quotes

Sun, 21 Jan 2024 14:22:56 +0000

I have over the last few years captured screenshots on my phone of quotes from the Economist Espresso news app.

Whatever quote I liked at the time I took a screenshot of, and now I wanted to use those quotes for something.

To do that I needed to get the quotes into a text file, which meant doing a few things:

Download all the quotes from Google Photos, and crop out just the quote. These are stored in the quotes folder
Use the tesseract command line tool to OCR the images into text, see quotes/ocr.sh
Because OCR isn’t perfect, I needed to manually inspect and make some changes..

Point 3 is key for what this repo is about. I’ve been building Sigbla for a while now and this is the perfect tool for this task.

Raspberry Pi vs room temp

Sun, 03 Dec 2023 16:38:06 +0000

About 2 weeks ago I released my Sigbla framework for working with data in tables. As it also provides charting abilities, I now had the perfect tool to build myself a Raspberry Pi temperature dashboard.

I have over the last few months been logging the temperature of my Raspberry Pi together with the room temperature (using an external sensor connected via USB). As my RPi is passively cooled, its idle temperature will depend on the room temperature.

My always running, occasionally busy, passively cooled, Raspberry Pi 4