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About helocast

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    Chopper Commander
  • Birthday August 17

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    Amarillo, TX

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  1. I did a few that way until I found some spring loaded 4PDT OFF ON (ON) slide switches. I'm sure I posted about those somewhere, maybe earlier in this thread? Sorry I haven't done any in about six months because Ebay console reclamation has been too pricey. I'll try and look them up again and see if the source still has them. Doug
  2. I've bought multiples of these in 2017 and since - they work well: Console BOM: https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=2254151 28.5 Watt 5V/12V/-5V Triple Output Industrial Table Top Power Supply CH 1: 5 VDC @ 2.5 Amps CH 2: 12 VDC @ 1.2 Amps CH 3: -5 VDC @ 0.3 Amps https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=15844 Standard DIN Socket Female 5 Pin Panel Mount or https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?-1&storeId=10001&productId=29399 Standard DIN Socket Female 5-Pin Right Angle PC Mount Unshielded https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=38050 6-Foot 3-Conductor SVT Power Cord 18AWG Black NEMA5-15P to C13 Plug PEB BOM: (just depends on availability since I use LM78XX series as needed on a small board attached to each power supply) https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=323847 AC to DC Power Supply Single Output 15 Volt 10 Amp 150 Watt https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=323783 AC to DC Power Supply Triple Output 5 Volt 15 Volt 15 Volt 15 Amp 6 Amp 1 Amp 132.5 Watt ... and a mix of 12V and 110V fans depending on what's available and/or what I have in my parts stock Haven't had any feedback, but there's several black consoles and V2 PEBs back out there somewhere in the wild after I modded them still doing fine. Just never formalized write ups for these or offered up front to do these as a side. There's never a market for more than one or two-off it seems. Doug
  3. There was a basic one a while back @ OSH Park w/o a pass-through. Still expensive, imo. https://oshpark.com/shared_projects/AJqKJwMn
  4. I may have to print one just to see. Picked up an Anycubic i3 Mega-S a week ago - already tried the FG99 and standard cart shells on Thingiverse. It's been a sharp learning curve for me so far ...🤔
  5. Well, the jury is still out on my end whether this forum "change" is better or not. I suppose I could get used to it.
  6. Slightly OT, but did you pay (or is anyone else) pay premiums (tariff increase or actual customs fees) on China orders lately? Jameco, Digikey, and a few others charge up front, but so far Ebay hasn't tagged me though I try to keep restock orders on my parts bins under $100 actual value. Just curious. Doug
  7. Not more than I was expecting. Sorry if I'm spilling seller's secrets, but I've always had this problem since I was 4-5 years old: If it is not broken, take it apart anyway ... if it still isn't broken when you put it back together, you probably learned something.
  8. Coincidentally, I have been meaning to inquire for few months now if you have any TMS99110/99105 PCBs and TMS9995 PCBs left over for sale. I bought one of your TMS9900 PCBs last year and I'd like to "round out my set" as it were. Love tinkering on your professional layouts. P.S. I'll throw in a bid on the above as well just to cover my bases - hopefully Customs isn't going to mark it under the Tariff Act, but I don't know if your country is covered under those rules. Doug TMS 99110 (or 99105) Breadboard or PCB System
  9. Rings a bell I've seen something like that, but like you, a cursory search after reading your post didn't produce anything. Other than the obvious 24/28 pin size difference if using an existing Mini-mem pcb/cart (arcadeshopper has adapter boards), I'd say it would be a fairly easy realization. I'll keep searching and reply back if I find anything:
  10. I'd like to add my reservation for: 1 2009Wt VD N (no stand) Thank you. Doug
  11. See, I didn't even know that existed or this was a donor-supported board. Easy peasy ... just did a Invoice #9048 - AtariAge Subscription - 1 Year Well worth it.
  12. Okay, embarrassed I missed that. Took a cheapy USB microscope shot top/bottom so you can see the traces. There is an additional tie on the bottom between 74LS11 pin 1 and 2. I'm going to stand by my comment of Pin 5 and the other three inputs to the unused gate still floating. On your second point, I warmed up my ohmmeter in continuity mode and found the upper hidden trace should be routed down to Pin 3 rather than Pin 2 (which indeed would fight PEB A13 with Pin 6's output). I did a lot of "does this make sense to me" when copying the layout, obviously I missed one (I hope that was the only errant trace because that wastes people's time). Corrected and revised ZIP attached. Keep errors coming - I don't mind ... just feel stupid. As suggested about managing attachment settings, I've removed previous versions of the file in messages. Corcomp_FDC-RevA.zip
  13. That would be great if it meets the needs of the community, thank you. I don't want multiple revised attachments that people have to cypher which one is the most current. I'm pretty sure I am a subscriber though, at least I have to sign in with a user/pass (figured forums had set time limits for editing after original post/reply).
  14. Thanks and I agree with U12 performing bulk of master selection logic - had hand crammed about half of the reduced output file when I started to see the patterns, just so time consuming. I don't have a PAL/GAL programmer (WANT) - eBay prices I've checked are for all used *as is*, discontinued programmers and priced too high for my budget.
  15. Thank you - all valid catches! ::curses in boolean:: Points in reverse order: 74LS11 does in fact have one unused triple 3-in AND (pins 8-11). Pins 1, 3, 5 are floating - I learned never to design this way (assume "1" or high float if unconnected), but didn't want to start ragging on creator as some routing in this design leaves a lot to be desired. 74LS123 was connected as you state and I can only blame myself for somehow highlighting it in edit when I deleted something else so it went poof. Ground plane around right center of board should have continued as you surmise. Oversight on my part. Orphaned via above PEB card edge connector should be connected straight down to finger pad ... again, an errant fat-finger deletion during editing. I also can't edit my previous post to replace the ZIP attachment, so I'll reattach it here with all the corrections and hope everybody finds this reply and downloads it again - my apologies to everybody's bandwidth/time.
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