@tomasmcguinness

  • Fixing the RESOURCE_EXHAUSTED error in the energy forecast

    In this post I try to solve the issues I saw with the Energy Forecast in my Tiny Dishwasher project. Read ⇢

    Fixing the RESOURCE_EXHAUSTED error in the energy forecast

  • Zigbee – (Not) Running my Dual Temperature sensor on a ProMicro nRF52840

    I got back from my holidays today and found that my order of Promicro nRF52840 boards from Aliexpress had arrived! I was trying out these Promicro boards because the battery terminals are available via the header pins. The XIAO boards I was orignally hoping to use worked great, but the… Read ⇢

    Zigbee – (Not) Running my Dual Temperature sensor on a ProMicro nRF52840

  • ESP32 – Modbus interface with an SDM120M

    In this post, I explore how to setup an SDM120M energy meter with an ESP32. The SDM120M is a DIN mounted energy monitor, which can work with currents up to 42A. My goal is to use one with my upcoming heat pump installation, as part of my monitoring plans. Ultimately,… Read ⇢

  • Matter – Tiny Dishwasher – Adding Energy Forecast

    If you read this blog or watch my YouTube channel, you’ll know that I recently built a Tiny Dishwasher. One that emulates a Matter Smart Appliance. I started that little project to learn more about the Matter smart home protocol. More specifically, the Energy Management parts of the Matter protocol.… Read ⇢

  • Trying hot plate SMD soldering on my custom PCB

    It been a while since I looked at the custom PCB I designed for my Zigbee Flow and Return sensor. When I parked the project, I had just received some new boards from Aisler, with support for Pogo Pins. You see, the XIAO nRF52840 board I was using had the… Read ⇢

    Trying hot plate SMD soldering on my custom PCB

  • Creating a Matter Controller with matter.js

    Whilst I’m still chipping away at my .Net Matter Controller code (it’s really hard), I wanted to continue exploring the Energy Management capabilities of Matter. If I wait until I’ve fixed all the issues in my implementation, Matter will be obsolete 🙂 To that end, I decided to have a… Read ⇢

    Creating a Matter Controller with matter.js

  • Giving hot plate de-soldering a try

    I had a go at desoldering some of my custom PCBs using a mini hot plate. 1st attempt saw me completely wreck the XIAO board. 2nd and 3rd attempts were much better! Read ⇢

    Giving hot plate de-soldering a try

  • Low power blinky on nRF52840-DK

    In this post I look at lowering the power consumption of the nRF Blinky sample when running on an nRF52840DK. Read ⇢

    Low power blinky on nRF52840-DK

  • Building a .Net Matter Controller – The Manual Pairing code

    I’m building my own .Net Matter Controller. I’m writing these posts as I go, figuring the stuff out and blogging how and what I’m doing. TL;DR; This post describes the manual pairing code and how I extract the discriminator and passcode values from it. The Manual Pairing Code There seems… Read ⇢