DMD Extender Discussion (ColorDMD Alternative)

(Topic ID: 67366)

DMD Extender Discussion (ColorDMD Alternative)


By Crash

4 years ago



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  • 730 posts
  • 117 Pinsiders participating
  • Latest reply 1 year ago by PohodaVole
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There are 730 posts in this topic. You are on page 13 of 15.
#601 2 years ago
Quoted from Crash:

DMD Extender does use copy protection. The keys for a given SD card are locked to that SD card. The Linux partition is hidden and will not be copied using Explorer. Use a program like Win32 Disk Imager to do this. Write down the serial number and keys used on each card! If you screw this up the software will not work and you will need David to clear it up for you. I would take extra precautions since he is unavailable for the foreseeable future.

I have no idea why pintastic thumbs downed your post, it's 100% fact. The DMD extender uses the SD card serial number to generate a unique key. If your SD card dies and David can't provide you a new key for a new card, your DMD Extender is completely non-functional. If you don't believe me, just copy your SD card contents onto a new card and try it out. All you will get is an error message and nothing else on your LCD screen.

I really hope that Dr. Pinball would consider unlocking his software. You have to buy his adapter so what does he have to lose by opening it up? I don't even want to touch my SD card for fear that it may get an unlikely static discharge rendering my entire DMD extender useless :/

#602 2 years ago

Pintastic is immature. Actually the software uses the CID number of the card and David uses this CID number with his keygen to generate the key. The DRM really irritates me as we've had SD cards corrupt on us on location and as consequence we have had to take games offline until David fixes us up.

#603 2 years ago
Quoted from snakesnsparklers:

You have to buy his adapter so what does he have to lose by opening it up?

As it is, it's just making a bunch of connections that could feasibly be done on your own with wires and resistors. Unless he built some kind of identification chip into the adapter that could communicate with the RPi to allow the software to run, I don't see how David would be able to restrict the software to just his hardware.

#604 2 years ago
Quoted from winteriscoming:

I think I might have been the one who put the creators of the two in touch with each other.
https://pinside.com/pinball/forum/topic/smartdmd-dmd-interface-with-colors-upscaling-network-and-more#post-1288711
However, unless something has changed, I'm not sure if SmartDMD is compatible with large Sega displays at this point.

Yes, it was confirmed by someone I know that this works.

#605 2 years ago

AFAIK the chip on that board is a "buffer IC" used to convert the signal into something the Pi can use.

#606 2 years ago
Quoted from Crash:

AFAIK the chip on that board is a "buffer IC" used to convert the signal into something the Pi can use.

Right. I'm not saying there is an identification chip or anything, but lacking anything like that, I don't see how David's software is hardware dependent.

I'm not saying I like the DRM, but don't see how David has an alternative. Maybe there's something possible that's not SD card dependent? But how would that keep you from copying the card and duplicating the setup elsewhere? If it's RPi dependent, that might be better, but you're screwed if the RPi breaks.

If he released the software for free, he could essentially say goodbye to revenue because DIYers could just make their own adaptors. Let's face it, it's a tinkerers mod to begin with. Definitely not as turn key as ColorDMD, so many of the people drawn to DMD Extender for the flexibility/price are also those who would be capable of making their own adaptors.

Of course, as greedy consumer and tinkerer, I'd love to see a free open-source solution where the software is free and the hardware is DIY. I'm just not up to the task of developing something like that myself, and I understand that people who do develop that kind of thing want credit and compensation.

#607 2 years ago

One notable thing is that DMD Extender is capable of colorization, very similar to Color DMD with a software update. David initially released a video showing a preview of this capability but the ColorDMD team was quick to jump on him and threaten that he stole their idea and would pursue legal action if he sold DMD Extender with frame colorization support. He since removed the video from youtube and dropped that aspect altogether.

#608 2 years ago

Holy crap, seriously?

#609 2 years ago

Yep :/

Quoted from DoctorPinball:

Hi
Sorry for not giving further updates - I've been tremendously busy with the project and wanted to wait until I had made some decent progress...
Data East / Sega - With the help of a fellow pinhead I now support DE / Sega games using 128 X 32 resolution displays. Hopefully support for larger format screens will happen soon.
RgbDmd - Using the same hardware as the extender I can now demonstrate real time colouring of DMD frames. The following YouTube video shows the editor and extender software system in action. Let me know your thoughts! Be gentle though it's still early days...
» YouTube video
Now that this system is looking to be working I intend to pursue building a replacement display system using an LCD screen. The RgbDmd software will be available for use by anyone so hopefully we'll start to see colour appearing on all machines.
Cheers
David.

Quoted from Dmod:

Since the question was raised... as described on our website, the ColorDMD invention is the subject of a pending US patent.
It's based on work I initiated in July 2009 and have spent several years improving upon, reducing to practice, and converting to a viable product that I could contribute, support, and share with the pinball community.
While I'm impressed with David's initiative and work with the Rasberry Pi, I confess to being a little concerned that the posted RgbDmd video demonstrates several of the ideas I disclosed in the patent application, and presented in seminars over the last few years.
I hope that the effort and investment made to invent the ColorDMD and get it to where it is today are considered by others as this new project progresses, and its scope and direction become more clear.
Randy

#610 2 years ago

so are they going to do large format sega displays. wish they would start with a simple yes or no and then go into explanation

#611 2 years ago

Yes it works with large format Sega displays.

#612 2 years ago

so what do you order from color dmd and how much

#614 2 years ago

i have email him over and over with no reply. not sure whats going on.

-1
#615 2 years ago
Quoted from busa32927:

i have email him over and over with no reply. not sure whats going on.

I doubt you will get a response now or 6 months from now. Mr. Pinball is having health problems or some other unforeseen issue preventing him from following through currently with taking or filling orders.

#616 2 years ago

Well I hope he gets better but someone should update his site

#617 2 years ago
Quoted from busa32927:

so what do you order from color dmd and how much

To answer your question I believe ColorDMD has no intention of supporting a Sega large format display but they will threaten to sue if someone else uses whatever method is protected under patent to colorize this display. Please someone correct me if I'm wrong.

#618 2 years ago

I'm real sorry to hear about Mr Pinball's health problems, and my outgassing Maverick DMD sure is insignificant when put into perspective, but is there any known alternative out there? I was thinking of tackling this project in the coming weeks.

Best wishes to Mr Pinball.

#619 2 years ago

Dr. Pinball, not Mr. Pinball. And where did you hear he has health issues?

#620 2 years ago

Look a couple posts above, pin-tastic's post.

#621 2 years ago

Sorry, was directing my question at pin-tastic.

#622 2 years ago

There is enough interest in his product, I wonder if David would consider taking on a partner to make this hardware/software? I know i am very pleased with it but am also concerned about the future.

#623 2 years ago
Quoted from PhilGreg:

my outgassing Maverick DMD sure is insignificant when put into perspective, but is there any known alternative out there?

If your display is not completely outgassed, you might consider Ingo's DMD saver board to help extend whatever life the display has left.

https://pinside.com/pinball/forum/topic/dmd-savers-from-german-pinball-vids-review

Borygard sells it on his site: http://lockwhenlit.com/products.htm

It may buy you some time until the colordmd situation is worked out.

#624 2 years ago
Quoted from mbott1701:

If your display is not completely outgassed, you might consider Ingo's DMD saver board to help extend whatever life the display has left.
https://pinside.com/pinball/forum/topic/dmd-savers-from-german-pinball-vids-review
Borygard sells it on his site: http://lockwhenlit.com/products.htm
It may buy you some time until the colordmd situation is worked out.

Oh, didn't know about this product. Might be an option... I asked additional questions on that thread, thanks for the tip. The price tag is pretty reasonable given that it's not a definitive solution. Not sure it still would be once shipped to Canada though, but I'll look into it.

#625 2 years ago

I have it installed on my Maverick and it's working well. My display was fine, though, I just wanted to keep it that way for as long as possible.

#626 2 years ago

For the Sega games how is the HV circuit regulated using this board? Does it attenuate the 18v power coming in?

#627 2 years ago

The dmd saver board is installed on the dmd controller board itself, there are no connections to the HV-section of the display.

411300.jpg

As Ingo explained it, it doesn't reduce any voltage to the display, but reduces the duty cycle of each cell

#628 2 years ago

Dang I completely forgot about that. So I'm guessing the 14 pin ribbon cable connection is an analog circuit and not digital?

#629 2 years ago
Quoted from PhilGreg:

I'm real sorry to hear about Mr Pinball's health problems, and my outgassing Maverick DMD sure is insignificant when put into perspective, but is there any known alternative out there? I was thinking of tackling this project in the coming weeks.
Best wishes to Mr Pinball.

If your display was made by dale or vishay-dale you can send it in for a rebuild while parts are still available. Iirc cost is around $180 or something like that. Quite reasonable all things considered.

#630 2 years ago
Quoted from Radius118:

If your display was made by dale or vishay-dale you can send it in for a rebuild while parts are still available. Iirc cost is around $180 or something like that. Quite reasonable all things considered.

They still do that? That would be the simplestnd cheapest way to go about it, I'll give 'em a call.

#631 2 years ago

I had no luck when I called them a couple years ago. But maybe they started doing it again.

#632 2 years ago
Quoted from Crash:

I had no luck when I called them a couple years ago. But maybe they started doing it again.

From what I understand there is a specific person you need to call.

PM me for details. Last I checked - 3 months ago - they were taking displays for rebuilding.

#633 2 years ago

Dang, I checked and I have a Cherry, no rebuild for me...

#634 2 years ago

Interesting alternative developing here. Let's hope he's willing/able to implement custom palettes.
https://pinside.com/pinball/forum/topic/rgb-led-panels-for-dmd-replacement#post-2727181

#635 2 years ago

Whaaaaaat!

Thanks for the tip, looks great!

#636 2 years ago
Quoted from PhilGreg:

Whaaaaaat!
Thanks for the tip, looks great!

I doubt it will be a viable solution for large Sega DMDs, though. I don't know if there are RGB panels in appropriate size/resolution.

#637 2 years ago

has anyone heard from dr pinball?

#638 2 years ago

Nothing. At this point I've decided to move on to SmartDMD. Turns out his adapter board is cheaper (with shipping) than the DMD Extender board. I have machines with dead/dying displays that need fixed before they go back on location.

#639 2 years ago
Quoted from winteriscoming:

I doubt it will be a viable solution for large Sega DMDs, though. I don't know if there are RGB panels in appropriate size/resolution.

What is the exact size of SEGA DMD ?
Maybe you just need need 3 of those
http://www.hongguitech.com/24-small-pitch-led-displays

#640 2 years ago
Quoted from Crash:

Nothing. At this point I've decided to move on to SmartDMD. Turns out his adapter board is cheaper (with shipping) than the DMD Extender board. I have machines with dead/dying displays that need fixed before they go back on location.

Are planning to do a similar write up for SmartDMD? I know I found your DMD Extender write up extremely helpful.

#641 2 years ago
Quoted from JeffF:

Are planning to do a similar write up for SmartDMD? I know I found your DMD Extender write up extremely helpful.

I might edit the photo and change the existing text around a little. Very similar.

#642 2 years ago
Quoted from Crash:

I might edit the photo and change the existing text around a little. Very similar.

A list of recommended hardware would be helpful and much appreciated if you have the time. I'd like to order the parts that are known to work together and get started on BF.

#643 2 years ago

Heard back from David today...

Hi

I currently have a queue of people waiting for DMD Extender products. However, I can only supply a few units each week, so please be patient and I’ll contact you again with order details. I’m working through the list of people in time order – I’ll get to everyone eventually!

Many thanks for your support.

David.

#645 2 years ago

Holy crap, he's alive.

#646 2 years ago
Quoted from JeffF:

Are planning to do a similar write up for SmartDMD? I know I found your DMD Extender write up extremely helpful.

Quoted from Jgaltr56:

A list of recommended hardware would be helpful and much appreciated if you have the time. I'd like to order the parts that are known to work together and get started on BF.

https://pinside.com/pinball/forum/topic/smartdmd-color-display-setup-guide

4 weeks later
#647 2 years ago

Of anyone wants to buy a display

DO NOT BUY from lcdkings on eaby
Got a DOA from this one, Backlite won't work, tested all voltages and are present even after the led fuse
wants me to pay for return shipment and I have to agree to addional terms...
I don't think so....
PayPal claim started

and the guy had over 99% positive feedback (&*^&%$#%$^$%

#648 2 years ago

It may not be the panel. I bought a panel from one seller and an LCD controller from another. When I connected them up, nothing powered up. The controller was on, but nothing at all happened with the screen. The problem was the LCD controller seller did not include the proper cable harness for my screen. Try the screen with another LCD controller designed for LG/Philips LP156WF1 if you can.

4 weeks later
#649 2 years ago
Quoted from coinoperator:

Of anyone wants to buy a display
DO NOT BUY from lcdkings on eaby
Got a DOA from this one, Backlite won't work, tested all voltages and are present even after the led fuse
wants me to pay for return shipment and I have to agree to addional terms...
I don't think so....
PayPal claim started
and the guy had over 99% positive feedback (&*^&%$#%$^$%

99% isn't that good on eBay... Ever tried entering negative feedback on there? They try to discourage it.
Anything below 99.5%, unless the seller has huge volume, is pretty bad IMO.

http://www.forbes.com/2007/01/02/ebay-smallbusiness-feedback-ent-sales-cx_al_0102smallbizresource.html

"It is this ominous threat of retaliatory feedback that causes everyone to be so very, very nice on eBay, according to some. Rather than risk a negative comment on their own account, many members would rather say nothing than too much. And the way eBay is currently set up, you have no way of knowing the percentage of the total transactions a particular buyer or seller has participated in that has resulted in their existing rating. Yes, you know how many people rated him or her, but you don’t know how many people refrained from providing any feedback at all.

This might sound like a small point, but it’s key. If most people are holding their tongues and simply not saying anything about the poor business ethics of a particular buyer, then that person’s rating doesn’t reflect reality."

1 week later
#650 2 years ago

Hello
I got SmartDMD working in my Maverick but I am having trouble getting the right borders. Screen is always cut etc. Does anybody have the correct values for the large Sega DMD on a 18,5" screen? I am not even getting close
Thanks in advance. T

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