Because I had been previously using my Pi as a headless server, I hadn’t installed a desktop environment. I wanted to add a lightweight heads-up display to the server, and I wanted a graphical application that could operate without X, the usual graphical system on Linux.
Writing such a lightweight application required understanding how to interact more directly with my new screen, the learnings from which I’ll share here. This article is a summary of multiple sources I pieced together.

Raspberry Pi controlling small LED array. Here is using a LED strip, but the chip may be the same to move the wished module:
https://amzn.eu/d/iVcOwJG

Example in Python of a TTS server for Catalan ONNX models

Piper is a fantastic tool for providing very realistic sounding TTS while also being efficient and fast. There are some publicly available pre-trained models, but if you’re here, that means you want to create your own voice. This guide aims to walk you through the steps.

The tool/function calling equivalent for Ollama, looking quite similar to Gemini

The offline Model library for Python

A Python class that encapsulates a Selenium-based web scrapper that outcomes a list of products and its prices from a given department URL.

Similar to the previous link, but apparently there is a new way to do so in the newer 2.x versions that simplifies all internally.

Example of functions in Python to make Google Gemini to give weather forecast for a location during a chat

How to use functions from within the Chat session besides the Generate Content, so chat history and more is self managed. In Python