◢ Field notes from above & below

Technology and Magic
With a dash of skepticism.

Writing about LLMs, agents, edge AI and the occasional D&D campaign — by Matthijs van der Veer, GenAI consultant, public speaker and Microsoft MVP at Xebia.

Scroll to descend
I · The Canopy — Latest
II · The Understory

Recent — closer now.

III · The Forest Floor — Archive

Older roots.

March 23, 2023

My edgeHub is Missing! - A Tale of Uncovering the Secrets of Azure IoT Edge

A fresh IoT Edge installation and your edgeHub just won't run? Check this first.

5 min
Post
March 22, 2023

IoT Edge AI: Top Single-Board Computers for Custom Vision

So, you're looking to run Custom Vision on IoT Edge and need a single-board computer (SBC) that can keep up with the workload?

5 min
Post
July 03, 2022

Rendering STL in Markdown on GitHub

Not only can you preview STL files in GitHub, but did you know you can also render a 3D view for an STL in Markdown?

5 min
Post
April 29, 2022

Add An Access Policy To Azure Key Vault In Bicep

How to add an access policy to Azure Keyvault from a different Bicep module.

5 min
Post
March 14, 2022

End To End Azure Digital Twins For Smart Buildings

Can you build a platform that goes from device telemetry to historical insights, all in one day? Here's how we did it.

5 min
Post
February 11, 2022

Connect To IoT Hub With Managed Identity

Stop using shared access policies to connect to IoT Hub, and start using managed identities.

5 min
Post
January 12, 2022

Adding Arrays To Azure IoT Hub Device Twins

Can you add arrays to your device twin in Azure IoT Hub? This example shows how to do it with the REST API, and use the twins with the C# SDK.

5 min
Post
December 15, 2021

Authenticating to Azure AD with JMeter without plugins

How can you test an application when it requires Azure AD authentication? Use a client secret and ID in JMeter to load test your secure applications, without any plugins!

5 min
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September 29, 2021

I Actually Built A Worse Model Uploader

Eating a slice of humble pie, while deploying Azure Digital Twins models at scale.

5 min
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August 28, 2021

Things I Learned While Building A Better Model Uploader

Here are a few things I learned about Azure Digital Twins and DTDL while building a new model uploader, and why I stopped trying to parse DTDL myself.

5 min
Post
August 27, 2021

Building A New Model Uploader For Azure Digital Twins

By uploading Azure Digital Twin models in batches, you can greatly reduce the number of API calls.

5 min
Post
April 15, 2021

Azure Feet for Azure Percept

My 3D printer is always solving problems nobody has. Today: Giving the Azure Percept some feet.

5 min
Post
December 18, 2020

No Code Notifications With IoT Central And Logic Apps

Receiving a notification from a device every time a new StackOverflow question is asked, without writing any code? I present you: The Matt Signal.

5 min
Post
August 28, 2020

Back to The Office with Azure Digital Twins - Part 2

Getting The Office back to the office with Azure Digital Twins. In this post I'm creating the graph with the models from part 1.

5 min
Post
August 21, 2020

Back to The Office with Azure Digital Twins - Part 1

Getting The Office back to the office with Azure Digital Twins. In this post, we will explore the DTDL models that make up the office.

5 min
Post
July 03, 2020

Integrating A Hydroponics Installation in IoT Central

Receiving telemetry from a simple hydroponics set up in IoT Central using an ESP32, Arduino and some sensors.

5 min
Post
August 05, 2019

The Fastest Way To Prototype Anything On Azure IoT Edge

5 min
Post
June 08, 2019

Connecting Azure IoT Central and Node-Red on Raspberry Pi – Part 2

How to connect your Raspberry Pi with Node-Red to Azure IoT Central

5 min
Post
June 08, 2019

Connecting Azure IoT Central and Node-Red on Raspberry Pi – Part 1

How to connect your Raspberry Pi with Node-Red to Azure IoT Central

5 min
Post