León Castillejos’ blog

“Never memorize something that you can look up.” - Albert Einstein

Posts - Page 4 of 4

Don’t share Microsoft Office documents: use open formats

  • 4 min read

It’s very common, in certain situations, to share OOXML files such as .docx from Microsoft Word and .pptx from Microsoft PowerPoint. I’ve seen this happen most often in schools, universities, and educational institutions in general. I will try to explain why this is generally a bad idea.

Read More

Making an open source security system: part 1

  • 3 min read

It has been a while since I wanted to make an alarm system. This idea has been on my mind ever since I got an alarm from Chuango. They are a burglar alarm vendor that releases kits you can install yourself. These kits communicate over wired and wireless connections, have no maintenance fees and have varying features depending on the kit chosen (some kits have GSM and PSTN, some others have WiFi, etc).

Read More