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.
👆Touch display for a mini rack. I set it up with my pi-kiosk configuration on a Raspberry Pi, and I can control and monitor the whole studio through Home Assistant. Should I do a video on it?
People often asked whether Pi clusters are useful besides just tinkering.
Well... I have a definitive answer: the Orban Optimod 5xxx series audio processors, which include a 3-node Raspberry Pi cluster, and cost north of $9k! Found at the NAB Show this week.
One Pi is used for remote control, web UI, firmware updates, and local display. Another for audio processing independent of the 'head' Pi, and a third optional Pi for (I think) audio watermarking for ratings data.
Jeff Geerling
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!)
4 days ago | [YT] | 1,374
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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!)
1 month ago | [YT] | 1,594
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.
1 month ago | [YT] | 2,653
View 72 replies
Jeff Geerling
A Raspberry Pi CM5 laptop. Would you like to know more?
3 months ago | [YT] | 5,412
View 297 replies
Jeff Geerling
Look what just showed up today... what would you like to know?
4 months ago | [YT] | 2,832
View 342 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…
4 months ago | [YT] | 1,976
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 ;)
5 months ago | [YT] | 851
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.
5 months ago | [YT] | 1,321
View 95 replies
Jeff Geerling
👆Touch display for a mini rack. I set it up with my pi-kiosk configuration on a Raspberry Pi, and I can control and monitor the whole studio through Home Assistant. Should I do a video on it?
5 months ago | [YT] | 4,801
View 231 replies
Jeff Geerling
People often asked whether Pi clusters are useful besides just tinkering.
Well... I have a definitive answer: the Orban Optimod 5xxx series audio processors, which include a 3-node Raspberry Pi cluster, and cost north of $9k! Found at the NAB Show this week.
One Pi is used for remote control, web UI, firmware updates, and local display. Another for audio processing independent of the 'head' Pi, and a third optional Pi for (I think) audio watermarking for ratings data.
6 months ago | [YT] | 1,185
View 77 replies
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