32 GB GPU on a Pi CM5; You don't even have to recompile Linux anymore! Testing underway, but check out my latest blog post on www.jeffgeerling.com for a quick how-to.
Still testing the new DeepComputing DC-ROMA Mainboard II, with 8 SiFive P550 cores, Imagination GPU, and separate NPU chip, with 32 GB of shared RAM. The way it works is... interesting.
Stay tuned for a video. This one might take a little longer than usual.
How much radiation can a Raspberry Pi handle in space? I asked Ian Charnas, the chief engineer for Mark Rober's Crunchlabs, and he shared a ton of great data on testing the CM4 while prepping for their SatGus cubesat launch!
Short answer, it reset (soft reboot) on average every 39.3 Rads on a cyclotron at UC Davis, and was killed (couldn't reboot anymore) at 57.8 kRad in the gamma radiation testing lab at University of Maryland!
There are three cubesats in this photo, one meant for local learning, built around an ESP32 microcontroller. Another meant for eventual space flight (but this one was a test mule for one that just went to the stratosphere!), and a third meant for... being *hacked*? Hopefully I'll be able to wrap up my testing so I can get this video out soon.
Because there's a fourth sat, not pictured, that's going to space soon... more to come :)
(Also, all credit goes to the people who build these things—lest you think I had anything to do with them, I did not, I just love space, love tiny computers, and love the integration of the two!)
After over two years, the Compute Blades I ordered on Kickstarter finally arrived. Doing and re-doing things (and re-doing them again) ten times is fun! I wish Ansible had a physical hardware installation plugin.
GNSS antenna installed—thanks to Dad for the help! Took a while to get everything ready, including the lightning protection (to be improved further), KF7P cable entrance box, and everything else.
2nd part of my 2025 Time series will be coming soon...ish. Once I figure out how to make more time.
Jeff Geerling
Jeff Geerling
32 GB GPU on a Pi CM5; You don't even have to recompile Linux anymore! Testing underway, but check out my latest blog post on www.jeffgeerling.com for a quick how-to.
19 hours ago | [YT] | 1,373
View 40 replies
Jeff Geerling
We are in the age of RISC-V chiplets, apparently.
Still testing the new DeepComputing DC-ROMA Mainboard II, with 8 SiFive P550 cores, Imagination GPU, and separate NPU chip, with 32 GB of shared RAM. The way it works is... interesting.
Stay tuned for a video. This one might take a little longer than usual.
1 month ago | [YT] | 1,894
View 66 replies
Jeff Geerling
How much radiation can a Raspberry Pi handle in space? I asked Ian Charnas, the chief engineer for Mark Rober's Crunchlabs, and he shared a ton of great data on testing the CM4 while prepping for their SatGus cubesat launch!
Short answer, it reset (soft reboot) on average every 39.3 Rads on a cyclotron at UC Davis, and was killed (couldn't reboot anymore) at 57.8 kRad in the gamma radiation testing lab at University of Maryland!
Read more: www.jeffgeerling.com/blog/2025/how-much-radiation-… (thanks to Ian and Crunchlabs for sharing this data!)
1 month ago | [YT] | 1,420
View 48 replies
Jeff Geerling
Coming soon... Pis in space!
<insert Portal 2 Space Core quotes here>
There are three cubesats in this photo, one meant for local learning, built around an ESP32 microcontroller. Another meant for eventual space flight (but this one was a test mule for one that just went to the stratosphere!), and a third meant for... being *hacked*? Hopefully I'll be able to wrap up my testing so I can get this video out soon.
Because there's a fourth sat, not pictured, that's going to space soon... more to come :)
(Also, all credit goes to the people who build these things—lest you think I had anything to do with them, I did not, I just love space, love tiny computers, and love the integration of the two!)
2 months ago | [YT] | 1,596
View 37 replies
Jeff Geerling
It's clusterin' time! (Again)
After over two years, the Compute Blades I ordered on Kickstarter finally arrived. Doing and re-doing things (and re-doing them again) ten times is fun! I wish Ansible had a physical hardware installation plugin.
2 months ago | [YT] | 2,657
View 72 replies
Jeff Geerling
A Raspberry Pi CM5 laptop. Would you like to know more?
4 months ago | [YT] | 5,411
View 294 replies
Jeff Geerling
Look what just showed up today... what would you like to know?
5 months ago | [YT] | 2,831
View 341 replies
Jeff Geerling
Sounds like someone at Apple heard my distress call about the state of timing and time synchronization on macOS!
Ref "It's hard to have a good time on a Mac": https://youtu.be/AtmQGMwF_M8
Haha jobs.apple.com/en-us/details/200605119/sr-software…
5 months ago | [YT] | 1,975
View 120 replies
Jeff Geerling
arm64 ITX motherboard with Nvidia GPU—works*
*Some caveats apply. And no it's not a Pi, nor Ampere. Ignore the jank ;)
6 months ago | [YT] | 852
View 42 replies
Jeff Geerling
The timing rabbit hole goes deep...
GNSS antenna installed—thanks to Dad for the help! Took a while to get everything ready, including the lightning protection (to be improved further), KF7P cable entrance box, and everything else.
2nd part of my 2025 Time series will be coming soon...ish. Once I figure out how to make more time.
6 months ago | [YT] | 1,319
View 95 replies
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