new blog post tomorrow.

Device classifications by RAM / Flash capabilities with examples.

Device classifications by firmware upgrade capabilities.

Device classifications by isolation capabilities with examples.

"Terminology for Constrained-Node Networks" (IETF Draft RFC 7228bis) has some useful classifications of devices on dimensions of RAM / flash, upgradability, isolation, secret shielding, available power, networking capabilities, bandwidth, and more.

www.ietf.org/archive/id/d...

what a joy to think deeply and understand.

been a while since I used cloud run and I actually really like how they haven’t abstracted that functions are just containers they build for you. makes it pretty easy to move from code to container in the future.

let’s build something great this week!

fridays are for demos!

let’s build something great this week!

let’s build something great this week!

fridays are for demos!

let’s build something great this week!

Coros heart rate monitor.

new hardware day.

It’s probably top 5 in the world at not having anything open after 21:00 😅

I think the only one that’s a hot take is Nuremberg being a top 30 running city in the world.

top two takeaways from my two week europe excursion:

1. The secure element / MCU TEE market is too fragmented.

2. London is a top 5 running city in the world, and Nuremberg is top 30.

Victoria Park half marathon results: chip time 1:21:24, gun time 1:21:30.

first race outside the US: victoria park half marathon.

Golioth is now a part of Canonical We are thrilled to share that Golioth is now a part of Canonical, the company behind Ubuntu and a global leader in open source.

"Golioth is now a part of Canonical"
blog.golioth.io/golioth-is-n...

Fooling Go's X.509 Certificate Verification Below are two X.509 certificates. The first is the Certificate Authority (CA) root certificate, and the second is a leaf certifcate signed by the private key of the CA. ca.crt.pem -----BEGIN CERTIFICA...

**Fooling Go's X.509 Certificate Verification**

New post on why verifying X.509 certificates in Go sometimes fails with seemingly identical CA certificates, and why different behavior in tools like OpenSSL further complicates the matter.

danielmangum.com/posts/foolin...

Fooling Go's X.509 Certificate Verification Below are two X.509 certificates. The first is the Certificate Authority (CA) root certificate, and the second is a leaf certifcate signed by the private key of the CA. ca.crt.pem -----BEGIN CERTIFICA...

**Fooling Go's X.509 Certificate Verification**

New post on why verifying X.509 certificates in Go sometimes fails with seemingly identical CA certificates, and why different behavior in tools like OpenSSL further complicates the matter.

danielmangum.com/posts/foolin...

new blog post tomorrow.

TIL what Gems are, which is also an answer to your question.

writing your own presentation software so you can still do engineering while constantly forced to prepare slides.

fridays are for demos!

decided to add another race to the calendar on short notice. if you're running the Victoria Park Half Marathon in London feel free to reach out!

13 inch framework laptop.

new hardware day! @frame.work

let’s build something great this week!

fridays are for demos!

Grafana dashboard showing device metrics.

fun demo with @golioth.io + @tailscale.com + @influxdb.com + @grafana.bsky.social to route embedded device sensor data from anywhere in the world to my local machine.

let’s build something great this week!

first race of 2026 tomorrow!

Front of 3d printed camera lens cap.

Back of 3d printed camera lens cap.

compliant mechanisms are incredible.