Daniel Mangum
@danielmangum.com
big fan of computers and human beings.
Pinned
Daniel Mangum
@danielmangum.com
· Nov 24
**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...
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...
read the first 100 pages of the three-body problem this afternoon, and I think this may be the most brutal burn I have ever encountered.
December 27, 2025 at 12:44 AM
read the first 100 pages of the three-body problem this afternoon, and I think this may be the most brutal burn I have ever encountered.
Reposted by Daniel Mangum
**Determining Current Arm Cortex-M Security State with GDB**
A short post on how comparing the current stack pointer register to the main and process stack pointer secure and non-secure variants can be used to determine the security state of Armv8-M processors.
danielmangum.com/posts/arm-co...
A short post on how comparing the current stack pointer register to the main and process stack pointer secure and non-secure variants can be used to determine the security state of Armv8-M processors.
danielmangum.com/posts/arm-co...
Determining Current Arm Cortex-M Security State with GDB
In my day job and free time I frequently find myself debugging Arm Cortex-M microcontrollers (MCUs). In recent years, it has become more and more common for the cores in these MCUs to implement Armv8-...
danielmangum.com
December 24, 2025 at 4:11 PM
**Determining Current Arm Cortex-M Security State with GDB**
A short post on how comparing the current stack pointer register to the main and process stack pointer secure and non-secure variants can be used to determine the security state of Armv8-M processors.
danielmangum.com/posts/arm-co...
A short post on how comparing the current stack pointer register to the main and process stack pointer secure and non-secure variants can be used to determine the security state of Armv8-M processors.
danielmangum.com/posts/arm-co...
**Determining Current Arm Cortex-M Security State with GDB**
A short post on how comparing the current stack pointer register to the main and process stack pointer secure and non-secure variants can be used to determine the security state of Armv8-M processors.
danielmangum.com/posts/arm-co...
A short post on how comparing the current stack pointer register to the main and process stack pointer secure and non-secure variants can be used to determine the security state of Armv8-M processors.
danielmangum.com/posts/arm-co...
Determining Current Arm Cortex-M Security State with GDB
In my day job and free time I frequently find myself debugging Arm Cortex-M microcontrollers (MCUs). In recent years, it has become more and more common for the cores in these MCUs to implement Armv8-...
danielmangum.com
December 24, 2025 at 4:11 PM
**Determining Current Arm Cortex-M Security State with GDB**
A short post on how comparing the current stack pointer register to the main and process stack pointer secure and non-secure variants can be used to determine the security state of Armv8-M processors.
danielmangum.com/posts/arm-co...
A short post on how comparing the current stack pointer register to the main and process stack pointer secure and non-secure variants can be used to determine the security state of Armv8-M processors.
danielmangum.com/posts/arm-co...
Reposted by Daniel Mangum
The holidays are a great time to do some personal development (hacking) projects. Dylan and @szczys.bsky.social rebuilt a meme machine on top of @adafruit.com's MagTag board
Read more about the project and view the full video here: blog.golioth.io/a-physical-m...
Read more about the project and view the full video here: blog.golioth.io/a-physical-m...
December 23, 2025 at 6:53 PM
The holidays are a great time to do some personal development (hacking) projects. Dylan and @szczys.bsky.social rebuilt a meme machine on top of @adafruit.com's MagTag board
Read more about the project and view the full video here: blog.golioth.io/a-physical-m...
Read more about the project and view the full video here: blog.golioth.io/a-physical-m...
let’s build something great this week!
December 22, 2025 at 1:01 PM
let’s build something great this week!
what are we hacking on this weekend?
December 21, 2025 at 9:20 PM
what are we hacking on this weekend?
thank you, GKE, for these wonderfully helpful recommendations for the same workload.
December 19, 2025 at 4:04 PM
thank you, GKE, for these wonderfully helpful recommendations for the same workload.
fridays are for demos!
December 19, 2025 at 3:56 PM
fridays are for demos!
New @golioth.io Firmware SDK release is now available!
v0.22.0 includes certificate rotation, enhanced logging flexibility, cleaner separation between OTA download and firmware update, and much more. Check out the blog post for more details!
blog.golioth.io/golioth-firm...
v0.22.0 includes certificate rotation, enhanced logging flexibility, cleaner separation between OTA download and firmware update, and much more. Check out the blog post for more details!
blog.golioth.io/golioth-firm...
Golioth Firmware SDK v0.22.0
The latest release of the Golioth Firmware SDK includes support for rotating certificates via Golioth’s integration with external PKI providers, routes logs through Pipelines, and reorganizes our firm...
blog.golioth.io
December 18, 2025 at 10:38 PM
New @golioth.io Firmware SDK release is now available!
v0.22.0 includes certificate rotation, enhanced logging flexibility, cleaner separation between OTA download and firmware update, and much more. Check out the blog post for more details!
blog.golioth.io/golioth-firm...
v0.22.0 includes certificate rotation, enhanced logging flexibility, cleaner separation between OTA download and firmware update, and much more. Check out the blog post for more details!
blog.golioth.io/golioth-firm...
We just made it possible to use any logs service with embedded devices... without changing any firmware.
Introducing @golioth.io Device Logs Anywhere, which leverages the flexibility of Pipelines to transform & route your device logs to platforms of your choosing.
blog.golioth.io/device-logs-...
Introducing @golioth.io Device Logs Anywhere, which leverages the flexibility of Pipelines to transform & route your device logs to platforms of your choosing.
blog.golioth.io/device-logs-...
Device Logs Anywhere with Golioth Pipelines
Today we are expanding Golioth's device logs capability by introducing support for routing logs to any destination using Golioth Pipelines.
blog.golioth.io
December 17, 2025 at 5:25 PM
We just made it possible to use any logs service with embedded devices... without changing any firmware.
Introducing @golioth.io Device Logs Anywhere, which leverages the flexibility of Pipelines to transform & route your device logs to platforms of your choosing.
blog.golioth.io/device-logs-...
Introducing @golioth.io Device Logs Anywhere, which leverages the flexibility of Pipelines to transform & route your device logs to platforms of your choosing.
blog.golioth.io/device-logs-...
Reposted by Daniel Mangum
Excited for hosted PKI integrations to land on @golioth.io today!
We're eliminating the complexity in establishing robust PKI for your fleet, and making it easy to build automatic certificate rotation into your firmware, regardless of the underlying infrastructure.
blog.golioth.io/introducing-...
We're eliminating the complexity in establishing robust PKI for your fleet, and making it easy to build automatic certificate rotation into your firmware, regardless of the underlying infrastructure.
blog.golioth.io/introducing-...
Introducing Certificate Rotation with Hosted PKI providers
Golioth pulls the IoT industry forward by making it easier than ever to rotate device certificates on embedded devices. A new Hosted PKI provider service is integrated with Amazon Private Certificate ...
blog.golioth.io
December 16, 2025 at 9:56 PM
Excited for hosted PKI integrations to land on @golioth.io today!
We're eliminating the complexity in establishing robust PKI for your fleet, and making it easy to build automatic certificate rotation into your firmware, regardless of the underlying infrastructure.
blog.golioth.io/introducing-...
We're eliminating the complexity in establishing robust PKI for your fleet, and making it easy to build automatic certificate rotation into your firmware, regardless of the underlying infrastructure.
blog.golioth.io/introducing-...
Excited for hosted PKI integrations to land on @golioth.io today!
We're eliminating the complexity in establishing robust PKI for your fleet, and making it easy to build automatic certificate rotation into your firmware, regardless of the underlying infrastructure.
blog.golioth.io/introducing-...
We're eliminating the complexity in establishing robust PKI for your fleet, and making it easy to build automatic certificate rotation into your firmware, regardless of the underlying infrastructure.
blog.golioth.io/introducing-...
Introducing Certificate Rotation with Hosted PKI providers
Golioth pulls the IoT industry forward by making it easier than ever to rotate device certificates on embedded devices. A new Hosted PKI provider service is integrated with Amazon Private Certificate ...
blog.golioth.io
December 16, 2025 at 9:56 PM
Excited for hosted PKI integrations to land on @golioth.io today!
We're eliminating the complexity in establishing robust PKI for your fleet, and making it easy to build automatic certificate rotation into your firmware, regardless of the underlying infrastructure.
blog.golioth.io/introducing-...
We're eliminating the complexity in establishing robust PKI for your fleet, and making it easy to build automatic certificate rotation into your firmware, regardless of the underlying infrastructure.
blog.golioth.io/introducing-...
let’s build something great this week!
December 15, 2025 at 11:14 AM
let’s build something great this week!
last race of the year tomorrow, and at the very least I’m guaranteed to set a new personal best for lowest marathon temp.
December 13, 2025 at 11:37 PM
last race of the year tomorrow, and at the very least I’m guaranteed to set a new personal best for lowest marathon temp.
fridays are for demos!
December 12, 2025 at 12:28 PM
fridays are for demos!
TIL that @github.com supports rendering CAD files in the browser.
Featuring the new Pebble Index 01 from @ericmigi.com and team.
Featuring the new Pebble Index 01 from @ericmigi.com and team.
December 10, 2025 at 6:33 PM
TIL that @github.com supports rendering CAD files in the browser.
Featuring the new Pebble Index 01 from @ericmigi.com and team.
Featuring the new Pebble Index 01 from @ericmigi.com and team.
thankful for compelling bugs.
December 9, 2025 at 7:04 AM
thankful for compelling bugs.
let’s build something great this week!
December 8, 2025 at 12:49 PM
let’s build something great this week!
time to make some ornaments.
December 7, 2025 at 4:31 PM
time to make some ornaments.
Hackday at @golioth.io and @szczys.bsky.social is spreading propaganda that I endorse.
December 5, 2025 at 8:51 PM
Hackday at @golioth.io and @szczys.bsky.social is spreading propaganda that I endorse.
I have always been extremely annoyed with pull-up resistors being described as "pulling an input high" when the input reading high is not due to the presence of the resistor.
December 5, 2025 at 2:07 PM
I have always been extremely annoyed with pull-up resistors being described as "pulling an input high" when the input reading high is not due to the presence of the resistor.
fridays are for demos!
December 5, 2025 at 1:03 PM
fridays are for demos!
I really want to start livestreaming on regular cadence again.
December 3, 2025 at 10:43 PM
I really want to start livestreaming on regular cadence again.