blog@donkeysharp:~$

Rediscovering AWS Firecracker, the hidden open-source jewel from AWS

This post is probably one of the longest I have in my blog, but trust me, it’s 100% written by me, no AI slop, gluten free XD Hi everyone! In this post I’m going to talk about Firecracker and MicroVMs and their importance during this new AI era we are living in. This is more like a summary of the talks I presented at the AWS Community Day Colombia 2026 and AWS Community Day Bolivia 2026. I received some messages from folks interested in this topic, so I feel happy to share it here! ...

October 10, 2026 · 12 min · Sergio Guillen

Some productivity tips that are working for me right now

Hi everyone, the other day I was chatting with a friend regarding productivity and how I organize myself, and he said it would be cool to post this, so here I am. In this post I’m going to talk to you about some productivity tips that have been working fine for me for more than a year, so I can have a more relaxed life. 2025 was a very important year for me because I became a dad, with that, new responsibilities came and I knew I needed to organize my time in a better way, also technology with AI evolved like crazy. Anyway, since 2024 I felt I was wasting a lot of time on social media. ...

September 8, 2026 · 8 min · Sergio Guillen

Installing Nvidia Drivers for RTX 50 series on Debian 13 Trixie

Hey everyone! In this post I’m gonna walk you through the process of installing Official Linux Nvidia Drivers for the RTX 50 series graphic cards on Debian 13 (Trixie). Some issues I found and other scenarios to consider such as OS upgrades. Something I love when using GNU/Linux is that there are multiple ways to solve a problem. And sometimes it will depend on the hardware you are using, architecture, desktop environment, etc, etc. ...

February 27, 2026 · 6 min · Sergio Guillen

Booting Raspberry Pi 3 Model B from SSD

Hey everyone! In this post I’m going to share my experience of USB booting the Raspberry Pi 3 Model B from an SSD. Although it is something I did almost one year ago, I wanted to share it… sorry for the 1 year delay xD! Probably there might be something I missed on my solution, so any feedback is really appreciated! Before the pandemic started, a friend of mine sold me 4 Raspberry Pi 3 Model B and one Raspberry Pi 3 Model B+. I used them for an electronics + home automation project I no longer need anymore, so I decided to repurpose them to something new, a new project I started working on for which I will make another blog entry. ...

January 18, 2026 · 6 min · Sergio Guillen

Nuke'em all! Using AWS Nuke to clean your AWS accounts

Introducing AWS Nuke! In this post I will give you a quick introduction to AWS Nuke, a tool developed in Golang that aims to delete all resources in an AWS account. This tool helped me a lot. Use Cases Cleaning Free Tier AWS Account This was a personal use-case, I created a free tier AWS Account some months ago and I’ve been using it for different purposes, some of the resources I created were via Terraform which made it simpler to delete the resources I created after using them, on the other hand, I created other resources manually without tracking them, some of them were costing me money!. So I prefered to delete everything in this account as I use it for learning purposes only. AWS Nuke is a great fit for this task. ...

July 13, 2025 · 5 min · Sergio Guillen