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Camera board • Pan/tilt dual GS camera holder

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I bought a 2nd GS camera, and was able to capture concurrently 688x136@402fps videos with both cameras:
viewtopic.php?p=2199349#p2199291
(proof that Pi5 has no problems to capture 804fps)

Yesterday I had both GS cameras on tripods:
Image

But I want a dual GS camera holder where cameras are as close together as possible.
And more importantly, that both camera sensors are on same plane.

I don't need the more orientations a tripod provides. Pan/tilt
Image
camera holder without motors is all what I want.

I created similar PT holder for 10,000lm leds I used for capturing supersonic pellets inflight:
https://stamm-wilbrandt.de/en/youtube/led_holder_stand/
Image

Instead using two holders as for the two leds, I want to create a single PT holder for both GS cameras.

Precise mechanical drawings for GS camera are here:
https://datasheets.raspberrypi.com/gs-c ... rawing.pdf

For verification that I placed all holes correctly I did a small test 3D model with openscad:

Code:

$fn=40;r=18+0.2;r2=3/2+0.1;l=38;o=5;i=1;th=1;difference(){  cube([o+l+2*i+l+o,l,1],center=true);  translate([-(i+l/2),0,-(0.05+th/2)]) cylinder(th+0.1,r,r);  translate([(i+l/2),0,-(0.05+th/2)]) cylinder(th+0.1,r,r);  translate([-l-i+7,-l/2-0.5,-(th+0.1)/2]) cube([0.8*l+2*i+0.8*l,0.5*l,th+0.1]);  translate([-i-4,l/2-4,-(th+0.1)/2]) cylinder(th+0.1,r2,r2);  translate([-i-l+4,l/2-4,-(th+0.1)/2]) cylinder(th+0.1,r2,r2);  translate([-i-l+4,-(l/2-4),-(th+0.1)/2]) cylinder(th+0.1,r2,r2);  translate([-(-i-4),l/2-4,-(th+0.1)/2]) cylinder(th+0.1,r2,r2);  translate([-(-i-l+4),l/2-4,-(th+0.1)/2]) cylinder(th+0.1,r2,r2);  translate([-(-i-l+4),-(l/2-4),-(th+0.1)/2]) cylinder(th+0.1,r2,r2);}
GS.dual.holder.scad.jpg
I did not want to connect to backside of GS camera because of the round black plastic I wanted to keep.

The 4 GS camera holes have diameter 2.5mm, I only had 3mm and more diameter screws.
I tried to use a 3mm diameter zink coated M3 screw to thread into the 2.5mm diameter brass of GS camera holes.
To my surprise it was really easy, with a screwdriver and a bit of force.
Even better, no nuts are needed for the M3x10 screws I use — the threaded GS camera holes "are" the nuts!

I did slice the 3D model with PrusaSlicer, and 3Dprinted it with my Prusa MINI+.
It turned out that all holes in 3Dprinted part covered perfectly the GS camera holes.
So now I can add the parts for threaded inserts (I plan rotation axis through middle of both GS sensors).
Then print, and print holder as for the leds, and finally screw both cameras into the holder.
Rotating holder on plane desk is "pan", and "tilt" can be modified via the side screws.
Work in progress ...
IMG_20240302_172720_MP.part.20%.jpg

Statistics: Posted by HermannSW — Sat Mar 02, 2024 5:50 pm — Replies 0 — Views 41



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