Define a proper cooling strategy
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Walter added a subscriber: Walter.Oct 14 2014, 8:32 PM

please take into account that this topic is strongly bond to the choice of material for the camera case itself.

if one takes an aluminium case it will conduct heat way better than, lets say some ecological friendly version
built out of wood or so. (which i hope to find time to work on :D!)

With aluminium case it is possible to design fins on the outside of the case which passive cooling may be adequate. In the video I heard that the heat dissipation of the sensor is around 3W. This is trivially small but the rest of the electronics need to be considered.

Here is an extruded case with built-in cooling fins. It is very cheap to manufacture and removes several items from the BOM.

Another point is that a fan might introduce vibrations if it is dirty or worn out.

Darby added a subscriber: Darby.EditedFeb 10 2015, 6:04 AM

So I watched the team video & someone poised the question about cooling, if I recall correctly it seemed as though what Sebastian proposed was putting a cooling fan inside of the camera?

This seems as though it could cause issues with noise & vibration, and consume more energy in the field. I noticed a phabricator item about using a peltier cooling chip, but I would be concerned about condensation in the case.

I like the concept of being able to tie onto some heat pipes.

What I would propose (and Im just shooting from the hip here) split the case longitudinally in 2 pieces (Front & back), and sandwich a layer of copper (hollow in the middle, matching the same cavitation as the interior of the case) in between that has cooling fins (doubles as additional texture for the hand to grasp onto) and has some metallurgical/thermal connectivity to the heat pipes so it can wick away the heat. With screws/bolts running thru the back of camera frame, sandwiched copper piece, front of camera frame -using an elastomeric seal where this piece meets up with the front & back parts of the case.

Completely passive cooling solution, that doesn't require any additional energy, no potential for noise, vibration or condensation, and gives it a bit of a different look & feel with the copper on the exterior

Anyways, just a thought...? :)

Good to see progress and a downgrading of the shaver potential!

I'm sure it's been discussed at length but I can't find any reference to internal ND's especially remote adjustable ND's using the search functions in Phabricator.

Are they prohibitively expensive? Discounted for some other reason?

From a hardware point of view I would have thought designing in onboard ND's would make useful cooling space whilst greatly increasing functionality/ streamlining the camera?

Arri 'Mini'?


Well what I think is that cooling a camera is not easy. And we need a super conductive material (e.g. Diamond, which does not conduct electricity very well but conducts heat at best, or silver which is cheaper, which conducts both electricity (electric charge) at best and heat really well (2nd place). So really, aluminium is the cheapest option. But we need something cold so we can conduct the heat out of the camera. So I think we should have some sort of heat spreader in which is directly from the CPU, and the heat is conducted out with water, like water cooling so it will definitely evaporate some water and the heat is lost by the water, which is not a good idea, because it is just inefficient. We need to be able to spread the heat, but the handle and the base of the camera and all the buttons of course should not be hot because the camera user will click on them, and the LCDs should not be hot too. So we should be able to spread the heat fast enough that the camera itself is cool enough.