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Group Build: Dynafet

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This is a screenshot of the duals portion of the board. Reorienting them into back to back (quad?) would not be easy...

Just to contrast, this is the group buy Dynalo board that does allow zip sockets (U1-U4). Pads are still too small in general however.

post-432-12951152808561_thumb.jpg

post-432-12951152808941_thumb.jpg

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  • Did some work on mocking up the chassis and getting into a more listenable state. I will need to get aluminum top/bottom and rear panels for this (not using the steel ones that it came with). I'm also

  • Finally got around to casing this (also posted in the What are you building thread. Needs a bit of wiring cleanup, and the transformer needs to get bolted down, but sounds great.  

  • Got both boards up and running with mods 1 and 2 above. Ran RMAA on it at 150mA, 100mA and 75mA bias. I think 150mA is probably the best. See what any of you think of the plots attached. Als

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Pads are still too small in general however.

same ring gauge as AMB uses I believe :)

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After thinking much about it, I propose that the "cost" for stuffing 2 boards should be 1 stuffed board in return. In Nate's case, I'm not sure what exactly will happen, but I think we should just force him to take the two stuffed boards and he can do with them as he sees fit.

This will be more meaningful after a final cost is worked up, but I'd like this to the starting point.

same ring gauge as AMB uses I believe :)

I don't really care who uses it... the point is they are too small and there is no valid reason for doing them this way, other than the default libraries of whatever layout package being used have them this way :indra:

I'd volunteer to do the layout but I only have the free copy of Eagle and it won't do a large enough board for this.

After thinking much about it, I propose that the "cost" for stuffing 2 boards should be 1 stuffed board in return. In Nate's case, I'm not sure what exactly will happen, but I think we should just force him to take the two stuffed boards and he can do with them as he sees fit.

This will be more meaningful after a final cost is worked up, but I'd like this to the starting point.

You mean like if someone stuffs 2 boards for say me, I cover the cost of parts which equate to a stuffed board for the stuffer?

That works for me :)

After thinking much about it, I propose that the "cost" for stuffing 2 boards should be 1 stuffed board in return. In Nate's case, I'm not sure what exactly will happen, but I think we should just force him to take the two stuffed boards and he can do with them as he sees fit.

This will be more meaningful after a final cost is worked up, but I'd like this to the starting point.

Seems reasonable.

I'd be in for one or two of those disipante cases...

M3 with MOAR POWER? :eek:

<snip>In Nate's case, I'm not sure what exactly will happen, but I think we should just force him to take the two stuffed boards and he can do with them as he sees fit.

This will be more meaningful after a final cost is worked up, but I'd like this to the starting point.

Don't spend much time worrying about me, I'm sure we can come up with something. I'm not convinced that when folks see the actual cost that you'll need me to build anything. :) Ahh, the misconception that DIY is cheap...(not talking about you grawk)

I don't really care who uses it... the point is they are too small and there is no valid reason for doing them this way, other than the default libraries of whatever layout package being used have them this way :indra:

I'd volunteer to do the layout but I only have the free copy of Eagle and it won't do a large enough board for this.

I errrmmm, may have access to a copy of Eagle that you could, ermmm, like use and such.

Depending on how this plays out, I might also be in for a case with panels.

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I'd volunteer to do the layout but I only have the free copy of Eagle and it won't do a large enough board for this.

Break the mold and use diptrace. Everyone's doing it. Sensible defaults to boot!

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As for other group buys tagged on to this, I'll leave that up to whomever gets assigned that particular piece of the build.

Still working out the assignments :)

Still working out the assignments :)

You might consider geographic proximity, since these suckers will probably be pretty heavy!

Does the Freeware version have a board size limit, or just the 250 pins?

Freeware Eagle will only do a 100x80mm board (~4"x3.2"). I need something that runs on a Mac also, ruling diptrace out (I believe??).

  • Author
Does the Freeware version have a board size limit, or just the 250 pins?

just a pin limit.

I guess a PSU sub-thread should be considered as well (number of orders/parts/cost, etc.)

I guess a PSU sub-thread should be considered as well (number of orders/parts/cost, etc.)

How about just getting them from here?

How about just getting them from here?

For the # we would be buying I think there would be a significant price savings buying the parts direct.

Break the mold and use diptrace. Everyone's doing it. Sensible defaults to boot!

I concur.

If Kevin is willing to share the board files we may be able to import them and save a bit of time making new boards from scratch.

Edited by naamanf

As for other group buys tagged on to this, I'll leave that up to whomever gets assigned that particular piece of the build.

Still working out the assignments :)

I'm definitely willing to organize and do some of the purchasing/distribution if you need people for that.

Which version is under consideration, this one?

dynafeths.gif

Output export types are

bitmap (no holes seem to show thru)

metafile (never figured out how to use this)

dxf (don't have autocad)

eps

vector (useless as far as i can tell)

overlay (not even sure what this is)

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