And could that power source come from a USB powered HDfury?
The design does not incorporate an outside power source it is power by VGA
No external power, totally parasitic.
Hey Toodles,
Let me know when you get some pictures and I will update the first post that is unless you want to wait till you get the boards that allow for the add-on RGB shields. or you can post at the end of the thread and I will copy and paste.
Also let me know if you want to do a clear and precise Q&A on whats needed to get a classic console to output D-sub in order use the SLG. I know its not directly connected to what your doing but it has a tendency to be a confusing matter to people interested in an SLG. I’m not sure of what type of documentation you were planning on including with the SLG-T if just a basic how to do adjustments or something beyond that.
How many non-RGB adjustable boards are you planning on releasing?
Have you completed DC testing.
Rosser is using punctuation and capital letters (not correctly, but nonetheless)? head explodes
-ud
So these are 2nd generation kits you’re testing, and the balance of the 1st generation stuff hasn’t come in yet?
haha ud…thanks for calling me out on my shortcomings. State schools finest right here
1st Gen boards were scraped completely
LOL. I noticed that too! I almost wasted perfectly good beer with a spit take.
Okay the 1.4 version prototype was tested with my DC VGA box (on the plasma. There were some CvS2 beatdowns at my house last night.) and on the ebay scaler, and the T-SLG did beautifully. I dont know how or if the resolutions can be changed on the Dreamcast, but all of the available resolutions on the ebay scaler were tested, and once the polarity switch was set, it came up just fine in every resolution. So, very happy.
I also did some testing with the same board using 100k ohm resistors instead of 10k. Since it is parasitic, some care should definitely be taken to reduce the amount of current it uses. What I found is that using the higher resistances did not affect anything in the timing so video was not affected AT ALL and the current draw was reduced by about 2/3rds. So, running at 1980x1020 from the Xbox360, the T-SLG would pull .102 mA; 102uA. That’s pretty awesome. 1/10th of a milliamp, and that’s for the worst case scenario in Thin mode. Wide mode: 0.093mA. Off: 0.069mA
So, I’m going to lay out the v1.5 version now. I’ll move the shield header back to where it should be to work with the shields I had made, and I’ll also add one more diode for another potential power source. Might as well. After I lay out those tweaks, I’ll get some quotes for assembled boards.
So, here’s the plan.
- the v1.2 version boards will go up on the site as bare pcb only. Please be aware that it’ll work on 640x480 and 1024x768 resolutions.
- the v1.4 version boards will go up as kits. Please be aware that there will NOT be any RGB adjustment shields for it.
- when the v1.5 boards get made, then they’ll go up for sale as assembled boards.
Thoughts?
So if I get the new 1.5 board, it’ll be compatible with the shield I already got from the initial batch?
Have you tested with the Xbox360 VGA cable?
Sounds awesome! Glad you were able to sort out the issues.
(I took out the image I had here because I realized how obnoxious it was)
Sounds good to me, I might hold off for 1.5.
- Yes, that’s the plan.
- Yes. I went through every resolution from 640x480 to 1920x1080 and it worked fine, but had to slide the Vsync polarity switch occasionally, since one side make 640x480 and 1024x768 work, while the other side was for everything else. It was a cheap cable, so the picture was crazy ghosted on the higher resolutions, but the scanlines came through peachy.
- I’ll definitely have a photo of an assembled one up shortly after the 1.4 kits go up on the site when I cover the assembly instructions.
- There’s no way I have enough experience to cover that sort of a topic.
- Looks like about 40-50. I think I have the parts for 25 kits, and it’s not hard or time consuming to get the parts for the rest.
- Yup, worked fine on my Blaze VGA box.
Win! 
-ud
Crap, Im out of 100k ohm resistors. I ordered more, so will probably have the v1.4 kits up just after Christmas depending on the mail.
If some one really wants one before then they can always go local 100k are one of the easier resistors to obtain cheaply
Cannot wait til the second run comes out, I missed my chance and hopefully I’ll be able to get a set.
Toodles,
Are we looking good on getting some 10k’s soon. I’m ready to change the thread title and get some of these beaut’s out to people