View Full Version : MX12 luma mod
MoRpH
4th October 2002, 06:53 AM
OK ppl I'm passing on email addresses to the creator of the MX12 luma mod for you guys to have direct contact with ihim and do the mod, I know Burstingfist and Brainstove were interested, can you guys respond here or via PM (if your paranoid about your email addy) with your email addy.
Also anyone else that wants to do the mod to an existing MX12 please leave a message here with you email addy so I can collate them and pass them on to him.
brain
4th October 2002, 07:45 AM
hey morph,
your box is full :) so here's my adress:
fn@eyetrap.net
thanx alot
MoRpH
4th October 2002, 08:34 AM
Yep cool I cleared it out... will add you to the list :)
2Bit
4th October 2002, 10:03 AM
Just been given one of these by our local Art School that was going to be chucking it out!!!
If you could add us to the list, v much appreciated
cheers
Jme
burstingfist
4th October 2002, 03:32 PM
ThAnKs MoRpH for following up with this. I am definitely interested in the luma mod. Here is my email:
burstingfist@hotmail.com
If anyone successfully performs the mod, post a reply to this thread. I am curious to hear how it works out...
jdat
6th October 2002, 06:39 AM
yay!
please add me :D
jdat@netcourrier.com
wellREDman
6th October 2002, 05:56 PM
anyone know the current going rate for an mx12?
burstingfist
6th October 2002, 06:30 PM
Originally posted by wellREDman
anyone know the current going rate for an mx12?
I have seen 'em go for $350 - $550 USD
MoRpH
7th October 2002, 03:29 AM
Yeah its around AU$600-$800 @ the momment
Stickman
9th October 2002, 10:29 AM
Looking at opne today thats priced at ?325 (GBP). Hopefully I'll get it for ?275-300 if it's in good condition
Stickman
Speng
17th October 2002, 11:05 PM
I am sorry I didn't reply to this thread sooner but I have been away working. I am also very interested in getting the instructions for the luma key mod. Thanks for all your help.
Tony
Stickman
18th October 2002, 01:01 PM
Please add me to the list for the Luma key mod.
jamie@stickman.biz
thxs.
Jamie
murph
23rd October 2002, 02:47 AM
count me in as well... never know...
murph@mr.net
MoRpH
23rd October 2002, 03:01 AM
D'oh I was offered an already modded one for $800 yesterday but had to turn it down cause I got no money...... got a new job today so might chase it up now :)
burstingfist
23rd October 2002, 07:26 AM
So, MoRpH, does the mod use the superimpose controls for controling the upper and lower limits of the luma effect?
MoRpH
23rd October 2002, 07:36 AM
Hmmm I don't have one infront of me but I think it uses the superimpose that lets you normally just use a flat colour like the MX10 but uses the secon channel. No it does not give 3 layers.
brain
23rd October 2002, 09:08 AM
the mx-12 has three channels which can be used for keying : 1, 2, and "key-cam", an extra input which can be used for titler etc.
if the mod works real good, it may be possible to key the third channel (= three layers).
BTW, i haven't got a mail yet. has the info been sent out?
MoRpH
23rd October 2002, 10:02 AM
well not in this mod the other input source is keyed with the normal key function that normally keys in a flat selected colour on the MX12, instead of white it will key in the other (video) input, not the cam. Same concept as the MX10 mod.
No, no emails have been sent out yet as other mods have not yet been completed that we are waiting on, also I've just been letting the email addies build up so we have a decent list so we don't have to do it again for the ppl that miss out. Just relax its coming, I think we have enough names but there are other things we are waiting on. SO CHILL
slike
24th October 2002, 10:10 AM
Hi morph !
sent you a PM - just found this thread and like to get on the list for the luma-mod.
i just bought a mx12 and like to do "something more" :)
... here my addy:
host@gmx.ch
thx for reply
Flo
Deebur
25th October 2002, 08:27 PM
:D Oh yes,
Let's Mod away, please!
dbezemer@wxs.nl
murph
27th October 2002, 11:25 PM
So I've got a question, looking for a new mixer, primarily for better luma control. If I pick up an MX12, how much time and money will it take to get it done? Naturally one can't be without a mixer for long.
MoRpH
1st November 2002, 02:39 AM
The mod doesn't take long to do, how ever there is an IC that yoou need to source.
MoRpH
3rd November 2002, 11:33 AM
I have given Brian (the creator of the MX12 mod) the final list of email addresses you should hear from him soon :)
BrainStove
10th November 2002, 10:08 PM
Well, well, well, today is not my best day, so I feel a little crumpy (maybe it?s my turn to become bitchy a little bit around) and for the same reason I?ve decided to pass my basket claiming and picking up all the freebies around here that were offered to me.
Don?t worry MoRpH it is not nothing toward you, just I?m soooo tired of Promises, Hype, Vapourware and ghost offers lately.
Can I be able to gig this christmas with my new flaming Lumamodded MX12?
burstingfist
10th November 2002, 10:31 PM
Patience grasshopper...
MoRpH
11th November 2002, 11:20 AM
I'm sure brian will contact you when he has time and is ready to walk you all through it....... stop your moanin' brain
trojan
20th November 2002, 01:39 AM
tom@media-mechanix.net
btw
Thanx for the info.
erikm
22nd November 2002, 10:56 AM
thanks-a-lot!
erik@videotroopers.com
franjo
10th December 2002, 10:29 AM
Is it possible?
According to me, luma mode is the only missing (and better) effect on the mx 12. Please, give me informations!
my mail: franjo24@hotmail.com
best regards
franjo
mikimoto
23rd December 2002, 03:58 PM
just wanted to know if someone has got some infos on the luma mod - progress?
let it snow ...
xsocyst
11th January 2003, 01:25 PM
hey all, MoRph just Pm'd my email address to you yesterday only just started chasing up the luma mod, just got an mx 12 a few days ago, was wondering if you knew what was happening,
thanks
X-SO?-CYST
MoRpH
11th January 2003, 01:42 PM
I do know some work was done recently on documenting it, waiting for someone to get back from family trip to find out.
bluntfaktory
12th January 2003, 08:40 AM
i use an mx-12 , what's the scoop ! email is visuals@bluntfaktory.com or you can get me through my site as well www.bluntfaktory.com :jump: :jump: :jump:
crx091081gb
20th January 2003, 11:03 AM
i'd be really greatful if u could add me to the list too.
thanks a bunch.
rob x
rob_does_the_nam@hotmail.com
dronkie
22nd January 2003, 02:55 PM
'llo there ... still possible to get that mod for the mx 12 i just bought ? please mail to beeldzaak@mail.be
thanks
dronkie
MoRpH
11th February 2003, 07:04 AM
OK folks the word from the documentors is that it will be released onto the web in early march, with photos and detailed description of performing the mod. They are being VERY exacting with the instructions and details as they don't want anyone making any mistakes and fucking their mixers.
So it is COMING VERY SOON now :)
burstingfist
12th February 2003, 04:06 AM
Drool...
xsocyst
16th February 2003, 01:54 PM
can't wait to mod my mx12!
TechnoLust
21st February 2003, 07:22 AM
I'm also interested to know about the Luma mod. I'll PM my email addy.
And to answer someone's question about cost, I just picked up an mx12 for U.S. $450. It's in great shape with only 2 owners, original Operating Instructions manual and store glossy brochure.
xsocyst
17th March 2003, 01:33 PM
Hey all, Morph just wondering if you had heard anything about the mod? hangin out dude, appreciate your efforts
Thanks
SO?-X-CYST
_________
X-SO?-CYST
burstingfist
17th March 2003, 09:45 PM
MoRpH is on the lamb, prolly won't ever see the glory of the Modded MX12 :(
MoRpH
18th March 2003, 03:31 AM
I'm out in the country visiting relatives just got on for a sec I saw tesseract on sat night but forgot to ask, catching up with them next week, will ask for an update then.
burstingfist
31st March 2003, 07:46 PM
OK folks the word from the documentors is that it will be released onto the web in early march,
March of what year?
xsocyst
2nd May 2003, 06:20 AM
Hey anything happenning on this thing ???
just curious!
kondensator
6th May 2003, 11:17 AM
man, if u'd add me, that'll be perfect :-))
vj.kondensator@berserque.com
vlux
6th May 2003, 11:56 PM
Would be great to be on the list if it aint to late?
Alan@v-lux.net
Cheers.
level6
17th June 2003, 04:10 AM
Has ANYone actually gotten this, yet? I've been reading this crap for YEARS, now. If you have it, stop hoarding and share it. Tell him that we're not interested in stealing his glory at his dumb shows. I'm in Dallas and do this strictly as a hobby.
If he has NOT successfully probed which pin on which chip, just tell us, man. We'll still love ya. In fact, then those of us who know a thing or two might begin opening ours up to try ourselves, and end up figuring it out for you guys. Freely distributed information has a funny way of coming back around, like that.
Raymond.
MoRpH
17th June 2003, 04:14 AM
firstly don't get abusive, that will get you no where, second the mod is completed I have seen 2 working units, the issue is the ppl involved are VERY busy and they ALREADY have there modded units that they are using so I guess its not a high priority to document it.
I'll be trying to hookup a meeting of the clans here in syd soon to discuss and Aust AVIT so I'll broach the topic then. Till then relax, or give it ago yourself, you never know what you'll learn.
level6
17th June 2003, 03:17 PM
You're absolutely right. A service manual is on the way. I'll race ya.
If anyone else is capable and wants to try, you can get the service manuals for the WJ-MX12 from 800-833-9626 for $12.99 (including tax+shipping). Service manuals include schematics and troubleshooting techniques, as well as theory behind circuit sections, etc.
The description of the same mod for the MX10 (including chips and pins) is mirrored on my site, here:
http://www.leper.org/lumamod/
I am adding comments to it as I go. The manual should arrive in 7-10 business days.
Raymond.
MoRpH
18th June 2003, 01:23 AM
Seriously good luck with it, I know its far more complex than the MX10 one as its an Svideo circuit path, I do know that unlike the MX10 which is a simple snip and solder job, brian's MX12 mod involves an IC.
Hope you manage to do it....... I too am pretty sick of waiting you know and if it stops ppl badgering me i'll be happy :)
xsocyst
18th June 2003, 05:01 PM
level 6 - nice one ! If I knew my way round schematics a bit better I would love to help but good to see someone else is having a go
MoRpH - Saw your post on In the mix in Melbourne the other day, next time your down here would love to meet up with ya! Come and check out one of our events
X
wellREDman
18th June 2003, 06:25 PM
Level6 go for it, but why bother with the mx12
surely the luma hack for an mx50 would be loads more useful to more ppl
MoRpH
19th June 2003, 01:15 AM
OK I'll post on here 2 next time :)
level6
19th June 2003, 08:11 AM
Sure... I'd love to figure that out, too. Send me one. (;
http://www.leper.org/ArpBox/
I'm not afraid of a lil [re-]engineering. I don't know much about svideo, but I'm ready to learn. My real problem is having too many hobbies/projects and ever getting around to any of them. Once my schedule starts filling up with shows, again, I can promise that I'll move much more slowly at this due to not wanting to take it out from the case and open it up, then re-assemble and re-pack over and over.
We'll see what I can figure out once the service manual arrives. I'll continue to share what I can AND what I cannot figure out in here, if that's OK. One never knows who can really contribute pieces to a solution. Many simply lack the self-confidence to jump in until they see that someone else is stuck, right? (:
Heck, even if they ever get around to documenting theirs, morph is still absolutely right in that we never know what our meandering will produce. Wouldn't it be great to turn right back around and share with those guys another version of their mod which is maybe cheaper.. or easier.. or offers some different effect... whatever?
Raymond.
level6
4th July 2003, 07:36 AM
I just got the service manual and have been up for >24 hrs, so please excuse slurs-n-awkwardness....
Guys, I think I might have it, and it doesn't require any chips. The decoder/encoder circuit handles splitting the signals up and the mixer circuit recombines them. I THINK everything one would need is on the mixer board. Now, PLEASE don't try anything, yet, if you are clueless... wait until this is tested. I will upload a scan of this portion of the schematic tomorrow when I've had a little sleep. I might be typing 15 where I need a 16... you never know.
It appears that CN4 (connector 4) sends Y1 IN, Y2 IN, C2 IN, and C1 IN over pins 1, 3, 5, and 7, in that order on the mixer board. I just now taught myself s-video, and it's really simple! Basically, the signal is split into a Luminance (Y), which is brightness and contrast information, and a Chrominance (C), which is basically color information... anyway..
The Control Board circuit ideally sends R, G, and B values to the main "Background Color Generator" chip on the Mixer Board (IC2). They also hop it over to white and black generators, etc... looks like they are just short-cuttting that, maybe for a more pure white or black or something?
IC2 on the Mixer Board then sends V.OUT over pin 1, which is run through a "Back Color Phase Shifter" (Q16, Q17, controlled by VR21 (B/C CHROMA GAIN), and VR22 (B/C CHROMA PHASE) then an invertor, buffer, and on to it's placement in the chain of buffers for C, at IC24.
IC2 on the Mixer Board also sends Y.OUT on pin 16, which is split into both a Y BLACK COLOR GENERATOR (Q9, Q13, Q14, Q15) and a Y BORDER COLOR GENERATOR (Q11, Q12, Q35-Q38) and both of these head out into the Y chain of clamps and buffers at IC21.
From this initial study, I would conclude that a switch which would allow a jump from CN4's pin 1 (Y1 IN) directly to where IC2's pin 16 goes (while probably cutting off IC2, pin 16 to be safe) and from CN4's pin 7 (C1 IN) directly to where IC2's pin 1 goes (while probably cutting off IC2, pin 1 to be safe) would not only give a full Y/C signal from Video In 1, but also allow as complete of an adjustment on it as one has on any background color.
Sound reasonable? The schematic will help... Let me know if any of this sounds just way off, though.
Raymond.
level6
4th July 2003, 08:08 AM
I can't sleep, yet. The first and most important part of the Mixer Board block schem is here:
http://www.leper.org/lumamod/mx12-schem-1c.jpg (700KB!)
I'm highlighting in PINK what I discussed, above.
Raymond.
level6
4th July 2003, 08:16 AM
Here is the middle portion, showing where those eventually end up being plugged back into the chain:
http://www.leper.org/lumamod/mx12-schem-2b.jpg (800K!)
Raymond.
level6
4th July 2003, 08:28 AM
And, here is the right side, showing that these chains indeed exit the Mixer Board and go directly to the Rear Board (where the external connectors are):
http://www.leper.org/lumamod/mx12-schem-3c.jpg (750K!)
Now, Going about testing this will be tricky, since I would NOT want to combine the signals and will need to snip some leads. The transistors are SMT, so those are out. I guess I'll either cut the traces (I was a level III rework solderer for Compaq, so I know how to repair such damage... PLEASE don't try anything unless you know how. I'm not responsible for your messes) or try to lift the chip leads. My problem is that I'm filling up with shows, now. I think I will try to get to this, next week. If someone beats me to it, please post in here whether or not you are successful.
Raymond.
level6
4th July 2003, 08:42 AM
You know what else I was thinking about? Since this mixer already has a bunch of audio circuitry... wouldn't it be nifty to allow audio levels control (ever-so-slightly!) the key levels?
I think that might be easy to do, too. The key levels are just VRs (Variable Resistors... sliders) and the LED meters for the audio are broken out by resistances... All one would have to do is measure the min/max of those VRs and match w/ LED circuit, maybe?
Even simpler.. measure min and max, take a VERY small portion, and add/sub that amount from whereever you're dialed (slid?) into at any time... so it more just sorta "shakes" a little more and less.
I'm tired... dreaming... (; Let me know if anyone would be interested in that sort of mod.
Raymond.
xsocyst
4th July 2003, 02:40 PM
nice one, sounds like you know whats going on and thanks for keeping us informed. Good luck with it and try and get some sleep.
level6
4th July 2003, 05:08 PM
Hehheh... OK, I got a little sleep. I forgot to mention that a common 3-position/6-pole switch would allow switching between the original background color circuit, video 1 in, or video 2 in. We wouldn't have to lose any current functionality if this was done right. There might be flashing or something due to the bounce in the switch, but... it's an MX-12.. we're used to de-sync flashing, right? (;
Also, I was calling that connector CN4, but that is its designation on the Decoder/Encoder board. It's obviously BI 4 (E4) on the Mixer board. I'll scan the appropriate lay-out and circuit schematics, later this weekend.
EDIT: Actually, I take that back... since there are TWO pieces to each video in, and to the background signal, it would require maybe a series of switches. Two 3-pos/6-pole might do it. I'm not sure I've ever seen a 3-pos/12-pole. (: But, HEY, wouldn't that be even better to allow only Y or only C from one or the other, or switch to both Y and C?
Raymond.
MoRpH
5th July 2003, 04:26 AM
Excellent work L6 looks like its coming along nicely I'll send the link to this thread to brian (the mod guy that did it here) he might be able to throw something in on this convo if he has time
wellREDman
5th July 2003, 08:46 AM
nice work level 6
just a coupla things that might be relevant,
when yr working with svid you need to make sure the wires for the Y and the C are exactly the same length, or you start getting funkiness,
likewise i dont bother trying to switch one on without the other, having just the y will work (but be black n white) but the Y also carries the sync so you cant use just the C
level6
5th July 2003, 10:39 PM
Excellent info, tnx. I talked in depth with a video electronics expert, last night, and he agrees that my conclusion is probably very close. He recommended a small pot on each in order to be able to fine-tune it back into sync. What you're saying about the wire lengths was covered, actually. That's cool. I think his guess was one nanosecond delay for every foot of wire (dunno what gauge).
We both agreed that the accidents that one would likely come across would alone make this worth messing around with. I am going to start shopping for a junker MX12 to play with. If anyone knows of one <$300 anywhere, let me know. I'm only going to try the main luma modification on my good one.
He also agreed that it would be fairly straight-forward to let the audio signal bump the keying around a bit. I want to try that one, too, but... not on this mixer. (:
Raymond.
level6
23rd August 2003, 04:00 AM
I just got another MX12. It should be here Monday. I will try this modification next week. I will discuss my results by the end of next weekend.
Wish me luck.
Raymond.
wellREDman
23rd August 2003, 06:25 AM
whoo hoo
looks like tesseract r bringing their modded 12's to avit , so ill finally get to see what all the shouting's about :)
level6
23rd August 2003, 06:37 AM
Yeah, to be realistic, I can only imagine the results, too. I will certainly post captures along with a detailed procedure as soon as it works (and, even if it doesn't.)
Who knows what I will create, compared to what they have, right? This is such a dumb legendary kind of thing that noone is sharing.
Raymond.
wellREDman
23rd August 2003, 06:46 AM
I dont think its about them being unwilling to share, they shared the mx10 hack.
I got the impression that it was more about the grief of documenting it fully enough that some fuckwit wasnt gonna sue them after he blew up his mixer.
level6
23rd August 2003, 07:16 AM
Aaahh, c'mon.
#1) A 5-sentence disclaimer paragraph absolves them from that.
#2) It has been, what... 2 years, now? How long does it take to snap 5-10 shots and write up a web page? Hell, even the MX10 page only had two dumb diagrams. Skip the photos, even.
Who are ya trying to kid, here?
I think I may be speaking for quite a few others, here, when I call bulloney on that. It's just that noone wants to piss anyone off by saying so because they are being strung along in hopes of seeing this mod. I'm sorry to be so frank, but that is just plain shitty, man.
I'm not picking on you, personally, buddy. I'm just blowing some general steam at this.
I want everyone to know that anyone is more than free to come back at me and call me a loud-mouthed ass, or whatever you are feeling. It's not going to change a thing. If I figure this out, I'm sharing it. It's all about the free information, brother. Ego sucks.
Raymond.
wellREDman
23rd August 2003, 07:39 AM
yay for level6
wellREDman
18th September 2003, 04:33 AM
looks like tesseract are coming over to AVIT UK with their modded mx12's YAY
xsocyst
1st October 2003, 03:56 AM
hey raymond, just wondering how you went with it all ??? I was thinking of getting a mate of mine to check out what you posted earlier and see what he thinks he could be able to give you some good feedback!!!
MoRpH
1st October 2003, 06:54 AM
Spoke to brian the other day, forgot to ask about his plans to put the instrustions on here... sorry, got talking about a mini matrix switcher design.... sorry.
level6
1st October 2003, 06:58 AM
Sorry. I spent $400 on a mixer from a guy in Florida, and he ripped me off and that discouraged me a bit.
I need to clear my workbench so that I can open it up and try to troubleshoot it. I can only attempt my own hacks if I can get output from it, first.
bleh...
Raymond.
xsocyst
3rd October 2003, 03:38 AM
bugger man, that sucks!
xsocyst
16th January 2004, 10:13 PM
Any new word on this mod?
level6
16th January 2004, 10:32 PM
Now, I feel super bad. I got another [working] one (now I have 3, total) and have still yet to clear the workbench and go at it. It's just lazy-ass me, not yet a failure in the hack.
I'm taking as long as those guys, though, eh. I'm sorry. I'll get to it soon, I promise.
(Keep posting in here and bugging me... maybe the guilt will speed me up.)
Raymond.
xsocyst
16th January 2004, 11:45 PM
GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT! GUILT!
Private message me with your email and I'll send you regular guilt mail.:scared:
brain
19th January 2004, 07:18 AM
do it, man! :)
MatFx
29th June 2004, 10:12 AM
Bought a MX12, but now want to do the Lumamod, is their any discription already on how to do it, with photo's and all?????
MatFx
30th June 2004, 12:46 PM
Is there really no one that can give me some info about the luma mod????? :(
MoRpH
30th June 2004, 12:54 PM
Yeah I can tell you, I have VJed on 2 MX12's with the Mod, they are (or were) owned by Tesseract (sydney based VJ team) and were modded for them by another sydney VJ that goes under the name of McRent..... I can also tell you I have hassled all of them numorus times to finally getting the details up onto the web, I always get "yeah soon" *shrug* I gave up.
MatFx
30th June 2004, 01:09 PM
I understand Morph...after almost 2 years ;)
Well still hope there is someone out there that has the mod documentated for posting here...:D
times2
6th July 2004, 07:21 PM
did anything come of all this drama?
level6, did those 3 mx12s all blow up?
OT: morph, whats with all the links to pictures of smiling girls in baseball caps at your gigs;)
MoRpH
7th July 2004, 12:37 AM
Huh? I just link to the ITM (and others) galleries of the events..... wierd ppl take wierd photos, sif I have any quality control
alangeering
7th July 2004, 08:41 AM
Originally posted by MoRpH
OK folks the word from the documentors is that it will be released onto the web in early march, with photos and detailed description of performing the mod. They are being VERY exacting with the instructions and details as they don't want anyone making any mistakes and fucking their mixers.
So it is COMING VERY SOON now :)
That was the 11th Feb 2003. It is now (checks lower corner of screen) 7th July 2004.
I know how long it takes to document a project, I do it all the time. The documentation for this mod should take less than 20 man hours. Spread that over 500 days, and it's not a huge burden.
This is not a dig at the mod creators, just recognition that there is no impetus for the mod to be released.
level6 seemed to make a few false starts and has been too busy recenty.
Well, today I find myself unemployed, and along with applying for jobs and doing some video work for charities, I have some time to dedicate to electronics.
Level6, can you send me scanned scribbles, whatever you have. It's a bit far for you to send the technical manual with all the circuit diagrams, but high res scans would be great.
If there is a UK MX12 user with the technical manual (i.e. the manual with the circuit diagrams) then can you please send it to me. I will take good care over it.
Does anyone out in the UK have an old MX12 that they would considder giving to this effort. You would have to agree to pay for the components and not worry if it breaks. If it works you get a modded MX-12.
I will also be looking to get an old MX12 from somewhere else.
Thanks,
Alan
MoRpH
7th July 2004, 08:51 AM
I'm happy that someone is keen to try to take up the reins. I have to admit I don't know much about the mod but I do know that it involved adding a new IC
TribalVision
24th February 2005, 10:54 PM
can u send me the way to do the luma mod to this mixer please?
rohel@canaloviedo.com
thx :)
MatFx
3rd November 2006, 11:26 AM
Hi all,
I found this post again and I was wondering if there is someone with documantation on how to do the luma mod on the Mx 12.
If yes! can you put up a link with the documantation or send me an e-mail with the documantation attached.
Thanx!
ender
4th November 2006, 09:11 AM
The activity on this thread caught my eye,
Earlier in the year Brian Murray was killed in a car/motorcycle accident.
Thus the documentation will never be completed and is being released "as is"
http://www.trl.com.au/projects/mx12/
Justin
MoRpH
5th November 2006, 07:45 AM
Thanks for making this available Justin.
Brian is sadly missed by all that knew him, its great that one if his achievements will go on in the scene.
MGCJerry
2nd December 2007, 02:19 PM
bump :p
Sorry to read about brian. :(
Did anyone happen to save the info that ender posted? The link is down.
ender
2nd December 2007, 10:56 PM
Webserver hosting the site is now case sensitive,
http://www.trl.com.au/projects/MX12/
cheers
MGCJerry
2nd December 2007, 11:26 PM
Ah cool thanks ender, you ROCK!. Looks like its time to pop open my MX12 and play around.
Going to have to try this out when I get the chip as I dont happen to have this particular one on hand.
Thanks a ton ender. :)
Edited:
Noticed your hand drawn diagrams. You might want to check out "TinyCAD". Its a schematic drawing application.
http://tinycad.sourceforge.net
Edited #2:
JDR Carries the 4052 chip (4 CHANNEL ANALOG MULTIPLEXER 16P) for $0.45 as well as many of the other goodies you might need. I have placed several orders through JDR as they dont have a minimum limit.
http://www.jdr.com/interact/default.asp
Edited #3
I've looked over the documentation for this mod as well as the guts to my mx12 and I've picked up a few things about these instructions that might need some clairification.
I have saved a copy of these docs to my test/development site, and have added my comments to it based on the instructions and your comments in the documentation.
The biggest concerns I've run into is Step 4 & Step 5. I have added my comments in red on the page. Everything else is verbatim to your page ender.
I have it temporarily setup at:
http://mgcjerry.net/Lumamod
If you get a chance, I'd like for you to take a look over them and see what you think.
ender
3rd December 2007, 03:51 AM
I'll respond to your specific queries when i get a chance.
Just thought id quickly mention that the mod is for a PAL mx-12 and your probably dealing with a NTSC one, so their may be differences.
MGCJerry
3rd December 2007, 04:15 AM
That was quick.
Ah yes, I didnt think of that. Yes I am working with NTSC.
My mix board is identical to the one provided on your page. Same parts, same connections same locations. Except for the capacitor/resistor thing though your service scan shows.
I wont be able to dive into this mod probably until the weekend. That will give me time to order some components and dig out my old electronics tools.
Anyway, prior to seeing the schematics and stuff, I had my suspicions on how the mod worked but since I've never dealt with video circuits in depth or even digital stuff for that matter I had no clue where to begin exploring it on my own.
It seems this mod just "simply" gives you the option to swap out the chroma color with either video source by piping it into a chip instead of the color signal. Its actually kinda brutally simple now that I see where things are at so this does give me a bit of a few ideas on expanding this mod.
I'm also looking into removing the power cable and making it like a computer power cord. I've also looked at installing a small fan to help keep the unit cool while I'm "in there". I'm going to probably tap into the powersupply to get my 12v voltage for the fan, so I might as well tap the lumamod into this power supply addon (with 5v of course). I doubt the additional current pull with the 4052 would cause much difficulty if tapped from nearby. Doing the lumamod, might as well tweak. ;)
I've just reassembled my mixer after ripping out the mixing board and studying the layout and the for the future location of the switch. It still works, so I know it can survive its own organ transplant and handling. :)
Thanks again ender for releasing this mod and looking into this.
kymatica
30th September 2008, 10:13 PM
MGCJerry have you persevered with this mod? Has anyone completed the mod with success? The information here is fantastic but is a bit sketchey around the edges. There are a few loose ends and uncertainties that remain. It would be much appreciated to hear from anyone out there that has taken this information to their mixer and got everything working. Any help would be greatly recieved.. :)
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