bugs Posted June 2, 2016 Share Posted June 2, 2016 I hooked up another 800xl today and after about 30 seconds staring at the screen I said ugg I cant use this....no uav...so I unplugged it and put it away... Ill be needing 5 more when they hit the store... Its a must have upgrade... Sent from my SM-G920W8 using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
JoSch Posted June 2, 2016 Share Posted June 2, 2016 Yes, the new 600xl is unbearable with the HDMI converter I use. Signal seems to be noisy as hell. Quote Link to comment Share on other sites More sharing options...
48kRAM Posted June 2, 2016 Share Posted June 2, 2016 Wow! I just decided to look again at video mods for my beloved 400 and found this thread. Is there any hope of getting one these boards for a 400? I've attempted a crude composite mod for my 400 but it didn't end well. This looks awesome! Quote Link to comment Share on other sites More sharing options...
+orpheuswaking Posted June 3, 2016 Share Posted June 3, 2016 Wow! I just decided to look again at video mods for my beloved 400 and found this thread. Is there any hope of getting one these boards for a 400? I've attempted a crude composite mod for my 400 but it didn't end well. This looks awesome! Eventually it will be available in the AtariAge store. Quote Link to comment Share on other sites More sharing options...
Smokeless Joe Posted June 3, 2016 Share Posted June 3, 2016 Wow! I just decided to look again at video mods for my beloved 400 and found this thread. Is there any hope of getting one these boards for a 400? I've attempted a crude composite mod for my 400 but it didn't end well. This looks awesome! It really looks beautiful on a 400. There's a little finagling needed to pass the wires outside the RF shield, and a sound circuit needs to be created to get both system and tape sounds (I think an upgrade board is in the works) but it's worth it! Quote Link to comment Share on other sites More sharing options...
+orpheuswaking Posted June 3, 2016 Share Posted June 3, 2016 It really looks beautiful on a 400. There's a little finagling needed to pass the wires outside the RF shield, and a sound circuit needs to be created to get both system and tape sounds (I think an upgrade board is in the works) but it's worth it! Audio board - Waiting on parts, but as I wait I'm trying to figure out the best way to mail them out when I do. Easiest for me is small flat rate priority USPS box but that is going to be overkill for the size of this board. Quote Link to comment Share on other sites More sharing options...
Brentarian Posted June 3, 2016 Share Posted June 3, 2016 Audio board - Waiting on parts, but as I wait I'm trying to figure out the best way to mail them out when I do. Easiest for me is small flat rate priority USPS box but that is going to be overkill for the size of this board. Are the audio boards going to be available in the AA store as well? Quote Link to comment Share on other sites More sharing options...
48kRAM Posted June 3, 2016 Share Posted June 3, 2016 It really looks beautiful on a 400. There's a little finagling needed to pass the wires outside the RF shield, and a sound circuit needs to be created to get both system and tape sounds (I think an upgrade board is in the works) but it's worth it! I've already cut a nice slot in my shield for the cable from my current mod. Not concerned with tape sound at this point -- maybe later. I plan on doing a gumby mod eventually anyway. Quote Link to comment Share on other sites More sharing options...
+slx Posted June 4, 2016 Share Posted June 4, 2016 Audio board - Waiting on parts, but as I wait I'm trying to figure out the best way to mail them out when I do. Easiest for me is small flat rate priority USPS box but that is going to be overkill for the size of this board. Did you consider padded envelopes? This would probably cut overseas postage considerably and I have received single books, Lynx carts and other small computer stuff safely that way. Gesendet von meinem iPhone mit Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
+mytek Posted June 4, 2016 Share Posted June 4, 2016 (edited) Did you consider padded envelopes? This would probably cut overseas postage considerably and I have received single books, Lynx carts and other small computer stuff safely that way. Gesendet von meinem iPhone mit Tapatalk I agree. I order all kinds of stuff from china, and it does come in small padded envelopes. Never had anything get damaged in transit. Here's a list of things I have received this way... Fully assembled USB FTDI break-out boards Fully assembled small audio amplifier boards A kit of parts including PIC chip for PS/2 Mouse to ST board PS/2 connectors ZIF sockets IC chips - Michael Edited June 4, 2016 by mytekcontrols Quote Link to comment Share on other sites More sharing options...
+orpheuswaking Posted June 5, 2016 Share Posted June 5, 2016 (edited) Audio boards will not be available in the store. This is something I decided to do as I wanted a professional board in my own machines and decided to build some for other 400 owners. Obviously the video board fits in many machines, as the audio board is just a subset of these it wasn't practical for Bryan to focus on making a small number. I have all of the parts minus sockets and will be testing a couple of configurations in the next week or so. After that I will be ready to build and take orders. As for shipping I have no problem using bubble envelopes to ship. I'll have to see what the cost will be for shipping materials and shipping VS a flat rate box. Any overseas shipping will be a bubble envelope for sure. Edited June 5, 2016 by orpheuswaking Quote Link to comment Share on other sites More sharing options...
pkriek Posted June 5, 2016 Share Posted June 5, 2016 Hi write me up for 1 too. atari 400 Patrick Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted June 12, 2016 Share Posted June 12, 2016 So this weekend my friend gave me a 30"+ late-model Toshiba 4:3 CRT that his boss had been trying to find a new home for; they wanted to pay ME for taking it off their hands! Anyway, first off, S-video looks FANTASTIC on this screen; seriously, amazing. However, the image flickers with physical jostling of the Atari. Even keystrokes can cause it. Moving images don't have any problem and composite output doesn't show this problem. I'm thinking there must be a loose chroma connection either at the DIN jack or possibly wiggling within the connection block. Before I tear it open sometime next week, what say the cognoscenti? Quote Link to comment Share on other sites More sharing options...
Bryan Posted June 12, 2016 Author Share Posted June 12, 2016 Built the first Rev D board today. I have a minor glitch to work out but it's mostly doing what I thought it would. I'm in the US right now, but the next two weeks are going to be pretty busy. I'll keep everyone updated, though. Before I tear it open sometime next week, what say the cognoscenti? The green terminal blocks have a little quirk: When the terminal clamp is closed, a wire can be inserted into the hole under it. You probably need to see if any of the wires pull out easily, make sure that terminal clamp is fully open, then clamp it down again. 1 Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted June 12, 2016 Share Posted June 12, 2016 The green terminal blocks have a little quirk: When the terminal clamp is closed, a wire can be inserted into the hole under it. You probably need to see if any of the wires pull out easily, make sure that terminal clamp is fully open, then clamp it down again. Thanks, Bryan. That's what I'll look at first. Really though, S-video is great. Thanks again for this neat little board. 1 Quote Link to comment Share on other sites More sharing options...
Bryan Posted June 13, 2016 Author Share Posted June 13, 2016 Well, my first tests of Rev D didn't quite go as expected so I'll have to wait until I'm back in Costa Rica (with all my equipment) to see what's going on. I think it's something simple but I just have too much on the agenda while I'm in the States (plus, the wife doesn't like me running off with my soldering iron and ignoring everyone!). Tomorrow we're heading to the Mackinac Island area (Michigan). I'll probably post another update in a couple weeks. 1 Quote Link to comment Share on other sites More sharing options...
Bryan Posted June 16, 2016 Author Share Posted June 16, 2016 Here's what I think is happening (without the means to verify yet). UAV uses a delay circuit to perform the pixel re-clocking. This has two benefits: 1. the LUM bits become time-aligned, and by adjusting the delay you can change the artifact colors. Rev C and Rev D do this a little bit differently so I could get more adjustment range. They both perform a 4-bit compare to detect changes, which is followed by an adjustable delay. Rev C uses a latch which opens after the delay and closes once the values match (that is, once the displayed pixel matches the LUM pins). Rev D uses a 4-bit flip-flop instead of a latch so there isn't a period of time where the latch is open. It also adds a 'dump' transistor to quickly discharge the delay capacitor. This is where I think the problem lies and sometimes the pixels aren't getting clocked. I'm going to test some high-speed FETs and see if the performance improves. Sorry for the delays, but I really want to get this working. 4 Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted June 19, 2016 Share Posted June 19, 2016 The green terminal blocks have a little quirk: When the terminal clamp is closed, a wire can be inserted into the hole under it. You probably need to see if any of the wires pull out easily, make sure that terminal clamp is fully open, then clamp it down again. I got around to opening up my 800XL today - sure enough, the Chroma wire was loose and just slipped right out of the block. I reinserted it but couldn't seem to get the block to grip the wire firmly; that particular screw seems to slip right as the terminal clamps onto the wire. After fighting with it for a couple minutes I took a seriously low-rent approach: I wicked a good side coating of solder around the end of the wire, let it cool, and then tried again. Voila - no wire slipping terminal block. S-Video looks great. 1 Quote Link to comment Share on other sites More sharing options...
Bryan Posted June 20, 2016 Author Share Posted June 20, 2016 Yeah, I got terminals from two different sources and one had better QC than the other (I posted about them a while back). From now on, I'll buy from the better source. If anyone needs a new terminal, I can try to get one to you. Quote Link to comment Share on other sites More sharing options...
greenoid Posted June 29, 2016 Share Posted June 29, 2016 I wanted to show my Atari 400 SW to my sons, but I couldn't display the output on our Samsung Flat-TV because it doesn't decode analog TV anymore. So I stumbled over this thread. I would like to have one of those magic UAV video output boards please. What do I have to do? I know how to solder so I guess I'll be fine replacing the chip with it and getting a video plug outside the case. Many thanks for your effort. Perhaps I need another one for am Atari 2600 I was given, but must first check if it is alive after all. Quote Link to comment Share on other sites More sharing options...
Bryan Posted June 29, 2016 Author Share Posted June 29, 2016 I'm back in Costa Rica, so I'm going to be finishing up my work on Rev D soon. I'll keep everyone posted! 4 Quote Link to comment Share on other sites More sharing options...
+orpheuswaking Posted June 30, 2016 Share Posted June 30, 2016 I'm thinking of potentially displaying a 400 at VCF Midwest this year with one of the video mods, a b key keyboard, 48k and audio mod Quote Link to comment Share on other sites More sharing options...
48kRAM Posted June 30, 2016 Share Posted June 30, 2016 What is a b key keyboard? I have a 400 that my dad spliced in an external 800 keyboard wired in parallel with the membrane connector. Quote Link to comment Share on other sites More sharing options...
kogden Posted June 30, 2016 Share Posted June 30, 2016 What is a b key keyboard? I have a 400 that my dad spliced in an external 800 keyboard wired in parallel with the membrane connector. It was an aftermarket keyboard for the 400 that replaced the membrane keyboard. What I'd like to know is if back in 1982 a 400 w/ b key, 48K upgrade and composite mod would have been actually been cheaper than just buying an 800? The only mod done to mine has been a 48K board. An AV upgrade might be interesting but the craptastic membrane keyboard STAYS LOL The mutant nearly unusable membrane keyboard is part of what makes the 400 special IMHO. Quote Link to comment Share on other sites More sharing options...
kogden Posted June 30, 2016 Share Posted June 30, 2016 (edited) Audio boards will not be available in the store. This is something I decided to do as I wanted a professional board in my own machines and decided to build some for other 400 owners. How much are you planning on selling the boards for? I might be interested in one. Edited June 30, 2016 by kogden Quote Link to comment Share on other sites More sharing options...
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