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SX20AC/SS aftermarket source — Parallax Forums

SX20AC/SS aftermarket source

Tracy AllenTracy Allen Posts: 6,664
in General Discussion
I've been keeping the Stache BASIC Stamp programmer alive for a handful of customers. It was originally built around the SX20AC/SS, but that is long out of production. There's hoarder's inventory out there, and I have quotations mostly from China that range from $16 to $78 (!!) per chip in quantities from 20 to 100. To keep it alive, I've started refactoring the circuit around an SX48, which Parallax still has at $0.78 each, but it is a pita to have to redo the pcb layout and to tweak the firmware. I thought I'd ask if any of you forumistas has or knows of a warm source for SX20s?


Comments

  • Ken GraceyKen Gracey Posts: 7,395
    We might have some at Parallax, Tracy. Send me an e-mail and I'll have Chantal check the secret stache, so to speak.

    Thanks,

    Ken Gracey
  • bullopenebullopene Posts: 7
    I've been cleaning out my desk this past week and found a bunch of SX stuff I'm never going to use. You are welcome to it.

    2 sx keys, 1 serial and 1 usb.
    1 sx28ac/dp
    3 sx48 proto boards
    1 sx tech board
    and... da da da daaaaaaa.....
    1 tube of sx28ac/ss chips... somewhere around 45 maybe 47...

    -Dave.
  • Tracy AllenTracy Allen Posts: 6,664
    Oh! great. pm's will be sent!
  • BeanBean Posts: 8,129
    Tracy,
    I think I have some SX20AC/SS around. I will look and let you know. Maybe 20 or so...

    Bean
  • PublisonPublison Posts: 12,366
    Bean to the rescue! Where have you been?
  • Tracy AllenTracy Allen Posts: 6,664
    Hi Bean, good to hear from you!
    Please pm me if you locate some chips. It turned out that Parallax had none at all. Lots of SX48s but no SX20s. I can also use SX18. That was the very first layout and I still have the Gerbers.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    Too bad you couldn't easily adapt the SX48 to fit into a SX20 slot. I had a customer who was desparate for SX28s and actually found some, but they were knock-offs and failed their testing. They were through-hole though, so I hooked them up with a board that converts the SX48 QFP to an SX28 DIP layout and they were able to wrap a final build of their product before moving to something else like an Atmel chip for the future.
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    Tracy,

    Since you mentioned SX18's, I have

    5 ea. Ubicom SX18AC-I/SO, datecode AB0116AP (SOIC), and
    6 ea. Scenix SX18AC75/DPES, datecode AB9931AB (DIP).

    Any and all are yours if you want them. Just PM or email me your mailing address.

    -Phil
  • BeanBean Posts: 8,129
    Tracy,
    This must be your lucky day. Not that I have the parts....But that I was able to find them.... ;)

    I have 33 of them that are marked:
    PARALLAX
    SX20AC/SS-G
    0751

    I assume 0751 is the date code of 51st week of 2007.

    Anyway, they are yours if you want them (and I assume you do).

    Send me a PM with your mailing address and I sent them to you.

    Bean
  • Tracy AllenTracy Allen Posts: 6,664
    Wow! Indeed a lucky day! pm sent. The SX turbos on.


  • BeanBean Posts: 8,129
    They are on the way Tracy.

    PM sent.

    Happy to help out forum members.

    Bean
  • Tracy AllenTracy Allen Posts: 6,664
    Thanks much Bean. There is no doubt in my mind that you have helped out this community and many of us individually.
  • Tracy AllenTracy Allen Posts: 6,664
    Thanks, Bean and Bullopene, I have enough now to keep the Stache alave for a while!
  • George_N2APBGeorge_N2APB Posts: 1

    Hi all,

    I know this is an old thread, and an even older controller chip that I'm looking for, but I'm hoping that once again someone has a 'secret stash' of the Scenix SX20AC/SS, or the SX28AC/DP, or frankly any of these Scenix chips that I may acquire.

    // I am trying to do a limited run of a wonderful project that I did for a large ham radio group back in 2002. It was a "smart badge" called The Badger ... http://www.arrl.org/files/file/Technology/tis/info/pdf/0209049.pdf. (Hope the link work for you guys.) It would be easiest just to use the existing Scenic software rather than porting to a newer chip.

    With fingers crossed ...

    Best,
    George_N2APB

  • PublisonPublison Posts: 12,366

    @George_N2APB said:
    Hi all,

    I know this is an old thread, and an even older controller chip that I'm looking for, but I'm hoping that once again someone has a 'secret stash' of the Scenix SX20AC/SS, or the SX28AC/DP, or frankly any of these Scenix chips that I may acquire.

    // I am trying to do a limited run of a wonderful project that I did for a large ham radio group back in 2002. It was a "smart badge" called The Badger ... http://www.arrl.org/files/file/Technology/tis/info/pdf/0209049.pdf. (Hope the link work for you guys.) It would be easiest just to use the existing Scenic software rather than porting to a newer chip.

    With fingers crossed ...

    Best,
    George_N2APB

    I have a stache of SX chips in a storage unit 900 miles away that I have to get to. Health problems have prevented me from going there for the last two months. Hope to get there in two weeks. I'll let you know my inventory. I have some of the inventory already reserved.

  • SchmidtCPHSchmidtCPH Posts: 1

    Hi George,

    If you still have the need, I still have 1000+ SX20 in stock. I am located in Denmark, so it might be easier for you with a source stateside.

    I love all my old Scenix stuff and have all the original development kits and documents. I still use the PROP1 and now also PROP2 :)

    Best regards Jan

  • The_MasterThe_Master Posts: 200

    Schmidt,

    I sent you PM

  • PublisonPublison Posts: 12,366

    I have ~75 SX48 SMD devices available.

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