Comment by robertelder | Hacker News Reader

Comment by robertelder | Hacker News Reader

Hi Everyone,

I do have it already linked in the article, but I should point out that the work I did is based upon the work of (at least) several other key individuals:

A lot of the low-level sensor interaction code is found in:

https://github.com/Hermann-SW/fork-raspiraw

Also, check out his web site with lots of other high speed camera hacking stuff:

https://stamm-wilbrandt.de/en/Raspberry_camera.html

The original fork of raspiraw is (I think) found here:

https://github.com/6by9/raspiraw

And the code for converting RAW images into standard formats uses dcraw:

https://en.wikipedia.org/wiki/Dcraw

I didn't personally write much code to put this together. I would say that my contribution here was mainly to pull together some impressive work done by others that wasn't getting much attention and market it well. Hopefully some of you get ideas and push this even further.

Thanks for posting your work! I’d like to see if I can get much more (if any) out of a Pi 4 which has more memory bandwidth and up to 2-4x more RAM than the 3 B+ it seems you tested with! Have you tried a 4 yet?

I haven't yet. It was actually quite a bit if work to get these videos recorded and document/test the process. I suspect there is tons of low-hanging fruit left in terms of improvements that could be made. Hopefully the steps I documented will be reproducible enough that others can make improvements and create even more impressive demos.

Thanks Robert for the youtube videos and the blog, hopefully many more people will play with high framerate video capturing by that.

But 660fps is not the end for v1 camera, I added section "kFPS videos from kEPS multiple exposure frames" to my github "v1 camera global external shutter" repo: https://github.com/Hermann-SW/Raspberry_v1_camera_global_ext...

In that section a 3000fps and a 9000fps animation are shown (and the tools needed to create them)!

The repo introduction now contains comparison of 20$ diy highspeed flashlight with commercially available one (and with the very costly one you cannot produce kEPS multiple exposures and kFPS framerate videos): https://github.com/Hermann-SW/Raspberry_v1_camera_global_ext...

Thank you for putting together such an inspiring and interesting project!

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