Building an ambient conditions sensor with a Bluefruit Sense board.

Building a portable ambient conditions sensor

This post describes how I put together a bluetooth connected ambient conditions sensor using a microcontroller and CircuitPython. Although this device can be used to monitor ambient conditions anywhere, I built it with a specific purpose in mind: monitoring temperature and humidity inside plastic containers storing 3D printer filament spools. Some 3D printer filaments are very susceptible to high humidity conditions (e.g. ABS) and can quickly degrade. Manufacturers recommend to keep them in areas with humidity conditions below 50% and ambient temperature not exceeding 30 Celsius....

February 4, 2022 · 4 min · L.R-S
Wireless split mechanical keyboard

Building a Wireless Split Mechanical Keyboard

Background A few months ago I started looking for ways to alleviate the wrist and shoulder pain I’ve been dealing with for a long time. I adjusted my home office desk, chair and computer monitor to be as ergonomic as possible. I did some research on ergonomic computer peripherals and tried out several of them. It didn’t take me long to land in the fascinating and addictive world of mechanical keyboards....

August 29, 2021 · 5 min · L.R-S
HomeKit Connected Fence Door Monitoring System

HomeKit Connected Fence Door Monitoring System

Summary The objective of this project is to create a solar powered, HomeKit connected outdoor fence door monitoring device. Once setup, the door’s state (i.e. open/close) can be monitored and used in automations within the HomeKit ecosystem. I’ve been using it for months now, and it has been working really well. See below a video of the system in action. This is not a difficult project, but there are several moving parts associated to it, so I’ll try to be thorough in the following sections....

June 23, 2021 · 9 min · L.R-S

Moving to Hugo… Sorry

Last week I moved from Pelican to Hugo as the static site generator used to publish this website. The decision wasn’t easy, Pelican had served me well for many years, it’s easy to use, reliable and I had heavily customized the website’s theme to fit my needs. However, the version I was using was pretty old and I ran into several issues when updating to the new one. Also, Pelican’s Python dependencies and virtual environment setup were a bit of a hassle to deal with....

June 3, 2021 · 2 min · L.R-S
3d Printed Tripod

3D Printed Desktop Tripod

Some months ago, I started looking for a desktop tripod to support an LED panel to be used as primary light on conference calls. Although there are many options on Amazon, none of them was exactly what I was looking for. My favorite tripod (Peak Design Travel Tripod) can be configured as a Desktop tripod, but its footprint is just to wide to be used on a regular desk. I decided to give it a try and design and print my own desktop tripod....

November 22, 2020 · 2 min · L.R-S