iShow DAC Hack Attack Part 2

[JohnYayas]

I am now in the process of adding support for the new iShow DAC version 2.3 with ethernet and USB. I am curious to see if any of the firmware problems have been fixed. I'll let you know how it goes.

[Badpip]

Are you sure it has ethernet?

It isn't mentioned in the specs... The RJ45 connector is marked "Easy ILDA" which makes me believe it is just an ILDA output

/Thomas

[JohnYayas]

You could be right, and most likely you are.

[Stoney3K]

Are you sure it has ethernet?

It isn't mentioned in the specs... The RJ45 connector is marked "Easy ILDA" which makes me believe it is just an ILDA output

/Thomas

So can you tell me a way they could cram a decent ILDA signal over 8 pins of output?

Aside from permanently mangling the ILDA signal (by using single-ended outputs) and bypassing the interlock completely, I see no way they could run more than 6 wire pairs over an 8-pin connector.

Or do they have a box that goes on the other end as well?

[flecom]

R
G
B
GND
X+
X-
Y+
Y-

not very hard

they are doing the same thing here

http://www.photonlexicon.com/forums/...highlight=cat5

[Stoney3K]

R
G
B
GND
X+
X-
Y+
Y-

not very hard

they are doing the same thing here

http://www.photonlexicon.com/forums/...highlight=cat5

I know how to do it (fairly straightforward), but not only does it completely defeat the ILDA standard (which specifies differential signals for each channel, thereby eliminating important ground issues), also, I wonder how iShow would get away with it in the USA, since there is no interlock circuit on the remote DAC and they would have a hard time getting the projector/DAC combination varianced through the CDRH.

[flecom]

uh, pretty sure most people using ishow dacs have non-varianced equipment

anyway you could always use a different cable for interlock

[JohnYayas]

The iShow DAC has the RJ45 output and the normal DB25 ILDA output so I don't think any of the above is an issue.

[JohnYayas]

I received the new version of the iShow DAC (2.3) today. Looks like some (or all) of the firmware problems that I mentioned in the past have been addressed. Even the software has been updated. Still nothing to write home about but hopefully it will work well with Spaghetti. Stay tuned.

[MLS]

uh, pretty sure most people using ishow dacs have non-varianced equipment

Ding Ding Ding +1