LoRaWAN is an industrial wireless protocol that sends tiny messages over kilometers on a battery that lasts years. This article introduces the protocol, its benefits, AWS IoT Core for LoRaWAN as a managed LoRa Network Server, and the architecture I built to monitor water, gas and electricity at home for almost zero cloud cost.

Aurora DSQL has no database passwords, only short-lived IAM tokens, while Grafana expects a static PostgreSQL password. This article shows how a scheduled Lambda refreshes the token through the Grafana API, with a read-only user and least privilege access to keep the bill under control.

Registering LoRaWAN sensors in AWS IoT Core with CDK requires a custom resource to avoid losing the device session on stack updates. This article explains why, how to store secrets in SSM Parameter Store, and what you gain by managing sensors as code.

A LoRaWAN-based water meter monitor using an inductive proximity sensor and a circular buffer algorithm to track water consumption with minute-level accuracy.

An Arduino-based system that reads a Belgian smart meter’s P1 port and transmits aggregated electrical data over LoRaWAN every 15 minutes, with over-voltage detection aimed at catching solar inverter shutdowns.

The cdk.out folder can balloon to 15GB+ in large CDK monorepos. Instead of wiping it entirely, a small cleanup script removes only unused assets — keeping deploys fast while reclaiming disk space.

Step-by-step guide to connecting the ThinkNode G1 LoRaWAN gateway (~100€ on AliExpress) to AWS IoT Core using LoRa Basic Station mode, including a workaround for uploading the client certificate via SSH.

Pour notre mariage, j’ai créé des sous-verres gravés au prénom de chaque invité grâce à un script Python, Affinity Designer, Inkscape et une découpeuse laser. Voici tout le processus, de la génération des fichiers à la gravure finale.

Turn your Xbox controller into a Lightroom culling tool on macOS; no paid apps required. A small Python script maps the buttons to pick, reject, and navigate photos for a more ergonomic editing session.

Silhouette Studio freezing on your Mac? A simple tweak in the display settings ;disabling anti-aliasing; can make the software dramatically faster and more responsive.

The Browan Femto Lite (now MerryIoT Hub) is an affordable LoRaWAN gateway that connects to AWS IoT Core via Basic Station mode. This guide covers the two main steps — registering the gateway with the right EUID and uploading the CUPS certificate — including the key gotchas that trip people up.

Managing multiple USB devices on Debian or Raspberry Pi gets messy when port names shift on every reboot. Using udev rules with device serial numbers, you can assign permanent, predictable names like /dev/anchor1 that survive reboots and reconnections.

Electrolux appliances — dishwashers, tumble dryers, washing machines — share a common failure: a blown resistor next to the LinkSwitch AC-DC converter on the main board. Instead of paying €200 for a full board replacement, swap a €5 component yourself. This post shows exactly how.

Running out of RAM on a Zolertia Zoul/CC2538 with Contiki OS? The .stack will not fit in FRSRAM error means you’ve hit the default 16 KB limit. A single macro disabling Low Power Mode unlocks the full 32 KB — here’s the fix and the battery trade-off you need to know before applying it.

First experiments with the laser cutter at the FabLab of Mons — from cutting 30 ceiling mounts for embedded systems to engraving a decorative plate for the lab’s kitchen wall. A quick look at what’s possible with a few hours of machine time and a bit of creativity.