Daniel Mangum

**This Website is Hosted on Bluesky** This weekend I found myself digging through the AT Protocol specifications and the Bluesky Personal Data Server (PDS) implementation. In doing so, I discovered that I could setup a website that is fully hosted on Bluesky. danielmangum.com/posts/this-w...

let’s build something great this week!

Yesterday I wrote about why many microcontroller (MCU) class devices were not impacted by the eMudhra intermediate CA certs compromise… but not all of them! Today we at @nordicsemi.com launched a tool (elfmudhra) to locally scan firmware ELF files to determine if involved root CA certs are present.

Your MCU Likely Escaped the eMudhra Intermedia CA Compromise By now, you have likely seen reference to the eMudhra Intermediate CA Compromise. Perhaps this is an opportunity for us to learn from the intention with which we build software for constrained devices. danielmangum.com/posts/mcu-em...

new blog post tomorrow.

this is one of those days where working in software and hardware security feels weird because if you went outside at the end of the day it would take hours to find one person who has heard of eMudhra.

let’s build something great this week!

let’s build something great this week!

it’s race day.

fridays are for demos!

What's on that Access Port? New post in which I dive into the Arm Debug Interface (ADI), using the @nordicsemi.com nRF54LM20 as reference, and explore how debuggers access Debug Port (DP) and Access Port (AP) registers to discover and interact with SoC components. danielmangum.com/posts/whats-...

“we heard you like ROM tables, so we put a ROM table in your ROM table, so that…”

What's on that Access Port? New post in which I dive into the Arm Debug Interface (ADI), using the @nordicsemi.com nRF54LM20 as reference, and explore how debuggers access Debug Port (DP) and Access Port (AP) registers to discover and interact with SoC components. danielmangum.com/posts/whats-...

let’s build something great this week!

new blog post tomorrow.

i have never once in my entire life desired that a video auto play.

the difference between what marketing means at a SaaS company and what it means at a semiconductor company is frankly hilarious.

let’s build something great this week!

mapping a production kubernetes cluster? maybe we have hit AGI.

looks like we’re doing orange site this morning.

When the Debugger Lies New post that purports to be about how GDB can sometimes return stale values on memory reads when used with a J-Link, but really is just an excuse to talk about DMA and how the key management unit (KMU) works on the @nordicsemi.com nRF54LM20. danielmangum.com/posts/when-t...

let’s build something great this week!

When the Debugger Lies New post that purports to be about how GDB can sometimes return stale values on memory reads when used with a J-Link, but really is just an excuse to talk about DMA and how the key management unit (KMU) works on the @nordicsemi.com nRF54LM20. danielmangum.com/posts/when-t...

new blog post tomorrow.

let’s build something great this week!

it’s race day!

it's crazy what you can learn by just asking enough people the same question until you arrive at the person with the answer.

let’s build something great this week!

seeing how many @bcantrill.bsky.social posts we can get on the front page of HackerNews this morning.

having an existential crisis because I think I may prefer confluence over notion.

let’s build something great this week!

cute little usb-c connector.

**Farewell Golioth... and Hello Nordic!** I am very excited to be joining @nordicsemi.com today! I'll be working across the stack to enable new products, features, and developer experiences from chip to cloud. danielmangum.com/posts/farewe...

let's build something great this week!

new blog post tomorrow.

it’s not every day that you see an oscilloscope ad in the airport.

not bad.

listening to He Who Fights with Monsters with my 4 AM Lyft driver.

if your measurement doesn’t look right, you might just be measuring the wrong thing.

fridays are for demos!

looks like we’re doing the orange site today.

the best days are full stack engineering days.

let’s build something great this week!

**The Simple Elegance of the Integrated Timing Belt Loopback Fastener** I wrote about a technique I recently learned about for securing timing belts to actuated components, which I have dubbed the "integrated loopback fastener". danielmangum.com/posts/integr...

**The Simple Elegance of the Integrated Timing Belt Loopback Fastener** I wrote about a technique I recently learned about for securing timing belts to actuated components, which I have dubbed the "integrated loopback fastener". danielmangum.com/posts/integr...

name anything better than going to home depot with your dog.

may i interest you in a second axis?

really leveraging the full diagonal here.

**Leadership Lessons from The Odyssey** After months of anticipation, I finally saw Christopher Nolan's depiction of The Odyssey last week. Over the weekend, I attempted to evaluate Odysseus's stature as a leader and relate his successes and failures to my own. danielmangum.com/posts/odysse...