Tomas McGuinness
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tomasmcguinness.bsky.social
Tomas McGuinness
@tomasmcguinness.bsky.social
Software developer with an interest in DIY, smart home tech and home heating. I make videos on YouTube https://youtube.com/@tomasmcguinness and blog at tomasmcguinness.com
Dual Temperature Sensor – Configuring FixedLabels in Matter

In this post I explore the FixedLabel and UserLabel clusters. I then add support for FixedLabels in my Matter Dual Temperature Sensor.
Dual Temperature Sensor – Configuring FixedLabels in Matter
In this post I explore the FixedLabel and UserLabel clusters. I then add support for FixedLabels in my Matter Dual Temperature Sensor.
tomasmcguinness.com
January 7, 2026 at 2:48 PM
Matter Heating Monitor - Subscriptions
Matter Heating Monitor – Subscriptions
In this post I look at some Matter subscription issues I encountered in my Heating Monitor
tomasmcguinness.com
January 5, 2026 at 10:14 PM
I have now wired in the outside temperature to my Heating Monitor!
January 5, 2026 at 8:24 PM
Matter Heating Monitor – Adding On-Network Nodes

In this post I look at how I added Existing Matter devices (OnNetwork) to my Heating Monitor
Matter Heating Monitor – Adding On-Network Nodes
In this post I look at how I added Existing Matter devices (OnNetwork) to my Heating Monitor
tomasmcguinness.com
January 5, 2026 at 10:19 AM
Unable to commission a Matter Device

In this post I examine an issue I had with duplicate nodes on my Thread network which prevent commissioning.
Unable to commission a Matter Device
In this post I examine an issue I had with duplicate nodes on my Thread network which prevent commissioning.
tomasmcguinness.com
January 4, 2026 at 9:46 AM
I think there is something wrong with my maths...
January 4, 2026 at 8:28 AM
The 40°C flow temp is holding the house at 19°C, at -1°C outside. Need to raise it to 41°C!
January 3, 2026 at 6:20 PM
Can you see the mistake I made? The splinter guard on my track is off by about 1mm at the end. This is reason, I think, that my cuts are wrong. My side panels. Perfect the bottom, off by 1mm at the top.
January 3, 2026 at 11:04 AM
In hindsight, I could have made this unit smaller. I allowed space at the sides for the hinges, but then didn’t subtract that from the depth. This might be better suited to my garage.
January 3, 2026 at 10:33 AM
I like my office warm, but this is ridiculous!
January 2, 2026 at 7:51 AM
The oil really brings out the grain!
January 1, 2026 at 10:46 AM
Happy New Year!
January 1, 2026 at 9:50 AM
Found a weird issue in my Thread network. I have a phantom device! This node was reset using a button, which I suspect doesn’t undo the Thread connection.
January 1, 2026 at 9:36 AM
Creating a Matter bridge for my Neff Dishwasher pt2

In this post, I figure out how to display my Neff dishwasher's programs and even start from the ePaper display.
Creating a Matter bridge for my Neff Dishwasher pt2
In this post, I figure out how to display my Neff dishwasher's programs and even start from the ePaper display.
tomasmcguinness.com
December 30, 2025 at 6:32 PM
After a lot of experimenting, I have my dishwasher’s programs showing on the @elecrow.bsky.social epaper display. Few kinks to work out of course, but progress nonetheless!
December 28, 2025 at 9:49 AM
I start my first furniture project! I cut four pieces of birch play to my the top, bottom and sides of a unit for my office. There was a little splintering on the edges, but otherwise this ply is amazing!!
December 26, 2025 at 3:45 PM
I’m trying!!!
December 26, 2025 at 9:17 AM
In 2026, I want to learn more joinery. This is my stretch goal!
December 25, 2025 at 10:35 AM
Creating a Matter bridge for my Neff Dishwasher

In this post, I start building an ESP32 device to control my Neff Dishwasher via Matter
Creating a Matter bridge for my Neff Dishwasher
In this post, I start building an ESP32 device to control my Neff Dishwasher via Matter
tomasmcguinness.com
December 24, 2025 at 10:14 AM
Why is it not snowing??
December 24, 2025 at 8:26 AM
About to try and solder my first all SMD version of my Matter temp sensor.
December 23, 2025 at 3:30 PM
Replacement display arrived from Aliexpress today. Much cleaner lines than my currrnt display. I will need to patch up the wall I think and figure out how to mount the damn thing.
December 22, 2025 at 10:09 AM
I humbly submit for your consideration; the smallest QR code I’ve ever seen
December 21, 2025 at 11:17 AM
Currently researching hinges. That’s how I roll on a Saturday night 🤣
December 20, 2025 at 7:18 PM