Any more feedback on this issue please?

Something like this looks better to me.

I prefer the orange color of the text of Beta. My reason is so that you can disnquish it easier.

Sander Kessels - http://www.lollibomb.com/ / https://twitter.com/lollibomb?lang=en

I prefer Open Source Design and Open Source Cinema out of the seven names.

What would be better:
A- A CHarger with the balancer incorpored and a battery with only low voltage protection
B- A more simple charger and batteries with their own low voltage protection and balancer.

why not 3.75mm, seems like a descent compromise. And I don,t think it is going to impact any external gear added to the camera.

just for fun.. could apertus order one of these? http://www.paperbatteryco.com/products/powerresponder/

just for fun.. could apertus order one of these? http://www.paperbatteryco.com/products/powerresponder/

I will start designing a "case/holder" of sorts. Sorry I am getting back to you all so late, I have been busy with school.

Forwarded by @smnstrm1 on Twitter:

Yes, it won't be very hard to design our own battery pack for the Axiom.
Here i made a Low Voltage protection. It will cut at 6V, (3V per cell) and it can be added to each Sony NP-F in case it's necesary.

We could also build our own NP-F compatible batteries (later) with Panasonic 18650 inside. The electronics seem not too complicated.

Sony's NP-F batteries do have their own protection inside the battery. I disassemble one to check. This one in particular has two 18650 from panasonic, and it was built in 1997. This batteries are still being produced 20 years later and used in modern cameras like the FS700. So i think is a good route to build the battery system.
The camera could have a universal power conector to change between different battery plates, so other baterries could be adapted as well. Like RED does with their cameras.
Even an ATX power supply connector could do the job.

wow looks like difficult to found one with screw !

Those looks quite OK, but they are huge!

Maybe this one but we need to have some place inside the enclosure for the screws ! It's also easy to remove them and also maybe possible to adapt for a 3d print solution...

Soz. I came in from the channel.

maybe my original requirements were not 100% clear:
not huge
not ugly
not glue-on
:)

That's what I was searching for. Assumed it would be best for everyone. There was some screw on versions but they were more like nipples eg https://www.banggood.com/4pcs-Furniture-Table-Chair-Foot-Non-Slip-Soft-Rubber-Pad-Cover-Clear-p-970553.html

Those are all glue-on.

The round flatter ones would probably be the most sturdy. Maybe include another 4 loose in the box.

CLEAR POLYURETHANE STICK ON

It seems to be pretty standard to use PU foam as air filter.

opted for a rather simple design that can be lasercut from a sheet of steel or aluminum.

Material suggestion: aluminium profile in combination with plastic 3d printed inner parts

Personally really keen on the Greek symbols as you know, but when it comes to potentially lining the pockets of law people and those who stand to gain financially from legal procedures, that's when I'd get really turned off.

Another interesting read - Apple also won a trademark dispute against 'Pear Technologies':
https://www.theregister.co.uk/2017/04/27/apple_lawyers/

Sony has used the 'β' symbol on their equipment and it was registered with the USPTO:
http://tmsearch.uspto.gov/bin/showfield?f=doc&state=4805:uv244z.5.5
"Video Tape Recorders, Video Cameras, Projection Televisions and Video Accessories"

CAD finished, manufacturing is next

@TWiGGZ as you see there is no urgent need for this product but if you are interested feel free to experiment and design some 3d-printable dummys, the only thing which seems clear is that we go for the NP-F battery system. (i am on holiday from now on and will respond later this month)

As i said in the audio recorder issue, we should focus right now on finalizing the AXIOM Beta, then we can build more open hardware devices like this.

Than lets go the np-f way (for now) !

... It would be good to pursue this, but not in the immediate term if it starts adding weeks/months onto a potential shipping timeframe.

Keep in mind that lithium-ion cells need electronics around it to manage charging/discharging, etc. and cannot be just inserted like AA Alkaline batteries. Developing our own battery pack has several obstacles and disadvantages, the electronics development itself wouldn't be that big of a deal I guess but just think of the safety regulations and certifications we would have to deal with for no real advantage over existing solutions....

@davidak: good idea, or the 21700 cells which will gain popularity when gigafactory starts to produce. 1 Wh costs about 0,4$ = great! battery solution not only for cameras- universal open source powerbank arround the smallest possible pice from the industry -> the cell

Addition to proposal 2:

The atomos power station looks rather interesting actually: Dual 5 VDC USB power outputs should be perfect for the beta.

you are right.

More flexibility is of course always preferred but I had the impression we are building a camera integrated battery mount here. Such solutions to externally attach batteries to rods in several places in the rig and for several battery mount types already exist from several manufacturers no?

NO! that is a mistake, if you are using rods, than you put them ON the rods behind the camera.. usually..
and if there are no rods it is good to attach it to the body of the camera directly to make one sturdy body.
don't you think so?

good point.. maybe two (upright) next to each other on the back side ?
on the other hand this 'brick' will fit everywhere on a rig..

My concern for putting the batteries under the camera body are that it might get in the way of attaching rods at the correct distances below the lens center: https://wiki.apertus.org/index.php/Rods

hi, what about such a hot swap- double battery design which fits under the camera or somewhere on the rig?
for 4A it is also good to have two batteries so that (the cheap ones) don't get hot too much.

Ok

Interesting read.

"He fired his first lawyer when she recommended that he accept a settlement offer that would have forbidden WalletHub from using any form of a single letter W in any future trademark application. He’s now two years deep into a trademark dispute with one of America’s largest sports leagues. “You can’t own a letter,” he insists. In a way, he’s right. But in a way, he’s very, very wrong."

The current beta hardware requires precise 5V inputs, around 2-3A typically, 4A max. peaks.

I have a tiny bit of experience with electronics. I might be able to come up with a voltage input controller.

The Sony NP-F970 L-Series battery is 6300 mAh. How much power will the camera need? That will narrow down which proposal we can use.

@christophvarga I think that the first proposal is fine. I think that finding a mounting/storing point will be a big issue as well. If you could, just post the pictures below! Thank you! Glad to be here!

@TWiGGZ that's fine! which proposal do you prefer?
for me it is still the first one with the sony NP-F batteries. it is the simplest solution especially because non of us two can do electronics.

I've worked with several cads such as tinkercad and autodesks cad. I can design some sort of holder. @christophvarga

what are your skills/background?

How can I help?

Concept ready: https://cad.onshape.com/documents/3cf5e610e2186efc1836afc0/w/c9bda205864d15c168f587db/e/0513cb9090f014b3b73d87b8

toxitobi: for the standard home measurement tape a grove would be great

if possible please add a thread to the enclosure for a knob at the sensor plane

not relevant anymore

Is it possible to record in Uncompressed 4K 4:3 CinemaDNG internally?
Yes, but only for a short period, till the memory is full.

http://old.engineerable.com/design/products/dslr-cat-shoulder-rig/make-a-handle-grip-dslr-cat-shoulder-rig/

Its not possible currently but we are working on it.