Kveldulfur Posted June 29 Share Posted June 29 Hello! The output from ACP is strange... is this a faulty GTIA or is it due to the missing PIC? Attached is the output of ACP from my prototype board. Kveldulfur Quote Link to comment Share on other sites More sharing options...
Overange Posted June 29 Share Posted June 29 Installed the PIC and no difference, When the Colour adjustment is at max as in my set up, the voltage at pin 17 of the GTIA , referenced to GND is 8.25V So changed the GTIA and - we get something that looks better I was sure the original GTIA was ok, oh well.... This is still with the pot fully wound up. Quickly checking with international karate, the composite image with UGV active looks like this:- you can see some jail barring on the left, this could be my test rig, I will retry later with my other TV Quote Link to comment Share on other sites More sharing options...
Kveldulfur Posted June 29 Share Posted June 29 Hello! The grid lines on the left are also visible for me with composite video. It is less pronounced with S-Video. I think your picture has too much blue in it, or is that due to the photos? The large picture is composite video output, the other is composite on the left and S-Video on the right. Kveldulfur 1 Quote Link to comment Share on other sites More sharing options...
Overange Posted June 29 Share Posted June 29 I do think its some thing to do with the colour adjustment, I will have a better look Quote Link to comment Share on other sites More sharing options...
+mytek Posted June 29 Share Posted June 29 7 hours ago, olix said: One way to increase the output voltage of this circuit might be to use diodes as CR2 and CR3 with a lower forward voltage (~0.75 V) like a Shottky diode (BAT48 ~0.25 V). The output voltage should then be about 1 V higher. I'm not an electronics expert, but could this work? Perhaps Mytec, who knows more about this, can confirm this. The two diodes on the remake circuit are CR401 (=CR2) and CR402 (=CR3). Or to decrease R37 (=R403 on the remake) would be also a possibility? It would seem logical that schottky diodes would improve the output level of the doubler (can't say for sure unless i try it). But that really shouldn't be necessary, since that circuit "as-is" has been used in a bazillion Atari computers without issue. It suggests that something else is to blame for the less than optimal output voltage. I suspect that would be the transistor Q401 that may be weak. Try swapping that for a new one. Also check that R404 is actually a 500K pot, and not something smaller. If it's a considerably lower value, that would increase the load on the doubler and cause the voltage output to be lower. 2 Quote Link to comment Share on other sites More sharing options...
olix Posted June 29 Share Posted June 29 ... it seems that the problem was a defective GTIA and not the color setting voltage. Voltage is 8.25 volts - that's OK So you are right: the use of Shottky diodes is not necessary here. 1 Quote Link to comment Share on other sites More sharing options...
Overange Posted June 29 Share Posted June 29 ALL RESOLVED R404 was the incorrect value as @mytek suggested looking at first. It turns out that the short cut on @Kveldulfur project webpage is incorrect, it directs you to the 100ohm version. https://www.mouser.de/ProductDetail/531-PT10MV10-26089 and the data sheet confirms this Anyways thanks for your help guys, including @olix Now time to put it in its new home @olix @mytek 1 Quote Link to comment Share on other sites More sharing options...
Kveldulfur Posted June 29 Share Posted June 29 (edited) Hello! I have now removed the link on my website, but in my opinion the link is correct. The link leads to PT10MV10-26089 which is a PT10MV10-504A1010. The 504 is a 500k potentiometer. Am I making a mistake here? 504 = 500K A = lin 1010 = 10% @olix The potentiometer is also included in the collective order... and I think you also used it on your board, didn't you? Kveldulfur Edited June 29 by Kveldulfur Quote Link to comment Share on other sites More sharing options...
Overange Posted June 29 Share Posted June 29 As mentioned before, the composite test monitor I was using for testing did show jail bars style artefacts, on my better tv/monitor and cable there is no visible jail bars in either s-video or composite. S-Video Composite Video This is the now working Colour chart with the correct colour adjustment resistor using super video Overall I am impressed with the Video Output Quote Link to comment Share on other sites More sharing options...
Overange Posted June 29 Share Posted June 29 Any finally in its new home:- Well done to you guys for making such a brilliant remake 8 Quote Link to comment Share on other sites More sharing options...
Overange Posted June 29 Share Posted June 29 (edited) 13 minutes ago, Kveldulfur said: Hello! I have now removed the link on my website, but in my opinion the link is correct. The link leads to PT10MV10-26089 which is a PT10MV10-504A1010. The 504 is a 500k potentiometer. Am I making a mistake here? 504 = 500K A = lin 1010 = 10% @olix The potentiometer is also included in the collective order... and I think you also used it on your board, didn't you? Kveldulfur ahh, I wonder if mouser sent me the wrong value or even a faulty one, apologies for pointing that your link may of been wrong. Because yes my order does give the 504 version, gawd dam, its now in the bin and I'm not going in to find it... Either way, its a good thing to remember should someone else have a similar problem. Edited June 29 by Overange 1 Quote Link to comment Share on other sites More sharing options...
Kveldulfur Posted June 29 Share Posted June 29 Hello! Okay, then everything is fine. 😀 I was a little worried that we had ordered the wrong potentiometer 50 times. 😅 I wish you lots of fun with your new 600XL! Kveldulfur 4 Quote Link to comment Share on other sites More sharing options...
olix Posted July 6 Share Posted July 6 There is now an internal FujiNet for the 600 XL Remake: https://abbuc.de/forum/viewtopic.php?p=25401#p25401 7 1 Quote Link to comment Share on other sites More sharing options...
venom4728a Posted July 9 Share Posted July 9 My order just arrived about an hour ago from DHL. 9 Quote Link to comment Share on other sites More sharing options...
Mathy Posted July 24 Author Share Posted July 24 Hello guys Atari4fan has found something on the silkscreen that might confuse some people. When you look at the silkscreen, you'll see "D401" with a "K" next to it. The "K" is on the wrong side! Sincerely Mathy 1 2 Quote Link to comment Share on other sites More sharing options...
olix Posted July 25 Share Posted July 25 That is correct. The K (cathode) belongs on the other side: 1 Quote Link to comment Share on other sites More sharing options...
Overange Posted August 21 Share Posted August 21 On 7/6/2024 at 6:01 AM, olix said: There is now an internal FujiNet for the 600 XL Remake: https://abbuc.de/forum/viewtopic.php?p=25401#p25401 Just fitted one of these Internal FUJINETs to my 600XL and it works great, for the SD card, all i did was cloned my existing external fuji net card and it connected onto my WIFI with no issues Thanks to @Kveldulfur and @tf_hh for this great little piece of kit 7 Quote Link to comment Share on other sites More sharing options...
Piotr D. Kaczorowski Posted August 21 Share Posted August 21 Interesting. Nice that Sega Saturn / MINI DIN 10 might become a standard. New SAVO boards will be available soon Quote Link to comment Share on other sites More sharing options...
Overange Posted September 2 Share Posted September 2 Enhanced 600xl additional Add on feature:- Following the fitting of the Internal Fuji net to the 600XL remake, I wanted a way of controlling the Fuji net, for example turning it off or resetting it, with this in mind I also wanted to somehow turn on and off the other features this board has to offer such as extended RAM, V-Gate or Stereo. Part of this is a way of note drilling or modifying the existing case. So I quickly designed a very small and simple set of switch PCBs, for the fuji net it has 3 Tactile switches and a mini 3 pin SPDT Slide Switch, with header to allow connection to the Main board. For the Main Board features, it just has 6 mini 3 pin SPDT Slide Switches and the headers. Each board is held in place with M3 nylon screws and bolts fitted internally. I know the Screw heads are exposed, but I was thinking about getting a 3D design of a bolt that can slide between the gaps and get anchored at the same time and remain flush with the case. As you can see from the photos the side slides are just poking out and the tactile are just on the edge, but just enough to make contact. And it all works great It means a can now turn off functions with out having to modify the case, or even have to open it up. Fujinet break out Main board Break out Fitted to the 600XL Connected up to the 600XL External Views 7 3 Quote Link to comment Share on other sites More sharing options...
Kveldulfur Posted September 2 Share Posted September 2 This is a great idea and a fantastic addition. I would be delighted if you could provide us with the PCB files (Gerber). Quote Link to comment Share on other sites More sharing options...
Overange Posted September 2 Share Posted September 2 8 minutes ago, Kveldulfur said: This is a great idea and a fantastic addition. I would be delighted if you could provide us with the PCB files (Gerber). Off course I can, I will email them to @tf_hh then you guys can mod it as much as you like. This board could be modified further to include LEDs for statuses etc. This is the source for the mini switch https://www.aliexpress.com/item/4001207529493.html The tactile switches where just standard 6x6x8 tactile switches, you could go slightly longer if needed. 3 1 Quote Link to comment Share on other sites More sharing options...
olix Posted September 2 Share Posted September 2 As so often, a great and useful thing that you have developed. And just at the right moment, because at this very moment I have a 600XL housing on my desk at home, into which I wanted to drill a few holes for the FujiNet600XL in the next few days. Thank you very much for your solution and for making the Gerber files available. 3 Quote Link to comment Share on other sites More sharing options...
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