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.
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.
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.
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.
Need deterministic, congestion-free communication between specific nodes in a Contiki TSCH network? This post shows how to hard-code a custom slotframe by overriding tsch_schedule_create_minimal(), with working code for a 3-node topology on Zolertia Zoul hardware.
