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About sutekh

  • Birthday March 28

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    Computers, Cars, Airplanes

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    IT Director

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  1. That just leads to it trying to permanently eject. All 20 pins are connected in a red stripe, 9 and 20 are missing with yellow, which is what the 800K drive needs for use with a plus. There are a few posts here with pics documenting the differences. Using the cable I modified by removing 9 & 20 from the ribbon, stops the eternal eject, but the above problem persists. Thanks! I hit that with some iso and compressed air to no avail. Also, If I remove the bar and slide mechanism, then attempt to block the optical sensor, it seemingly has no effect--the motor just runs indefinit
  2. I had a bit of a eureka moment on this topic yesterday. I stumbled across a more generalized "Macintosh Duo System" Developer Note that I hadn't encountered before on other sites: http://cdn.preterhuman.net/texts/computing/apple_hardware_devnotes/PowerBook Duo System.pdf Remarkably, chapter 5, Internal Modem, includes nearly all of the detail so glaringly absent from the 280c's specific Note and answers many of the questions posed above. Here are a few highlights: As theorized, the internal modem including the Rockwell "data pump" is absolutely required for docked mod
  3. I purchased a dirty and untested Sony 800K mp-f51w-23 (I think it came out of an SE) as an internal drive replacement for my 512K (which is running Plus ROMs and a MacSnap). After thoroughly going through it and cleaning / re-lubricating, the carriage movement is nice and smooth, but when connecting and powering, the head movement stepper motor just runs continuously: Project 1_New.mp4 I didn't test it before before disassembly, so not sure if this was a pre-existing condition or not. I DID modify the ribbon cable that came with the drive by removing pin 9
  4. @Trash80toHP_Mini Very interesting, thanks for posting! Just the DAA then. So using a dock's "modem" must seemingly require the internal modem? That would explain why there's a line in the above diagram going from the MUX to the expansion connector. @Challenger 1983 I believe the answer is that there isn't an equivalent. The pictured boards seemingly just contain the Digital Access Arrangement circuitry (step down x-former, signal conditioning, surge suppression, etc.). Given that, the two biggest outstanding question I have are: Whether modem communication
  5. Interesting! I like the idea of configuring the wifi and initiating the connection in one app via a single protocol, whether as you sought to do or as @techknight suggested above. That said, it's quite easy, once a SLIP connection is initiated, to telnet into the ESP and execute a single command to set the AP (e.g., set <ssid> <password>), so not sure it's worth the effort IMO. Out of curiosity, what kind of speeds were you seeing? I thought about fiddling with the more capable external RS-422 ports vs. the slower internal RS-232, but pretty quickly abandoned that thinking for
  6. +1 for TRS80's suggestion. It'd be awesome to see something SCSI connected in a 2.5" form-factor for use in any Powerbook that could do double duty as an HDD replacement and provide wifi ethernet. #pipedream
  7. Take a read through the other thread: "Of the numerous available ESP8266 boards out there, I chose the ESP-07 for its u.Fl connector. Reason being, the interior of the PB plastics are coated in a metallic RF blocking film and I wanted to route a higher dBi antenna up behind the display. Here's the part I'm using, which has plenty of cable length and the signal strength is great!" More generally, with this thread in this PowerBook forum, I'm really just trying to provide awareness to and gauge interest level from Powerbook owners / users. Certainly happy to continue discussing specific har
  8. Thanks for the advise. The only trace routing near the antenna (and note, I'm using an external u.FL connected ant, not the on-board ceramic) is +5v topside and an unnecessary CTS pin headed to the RJ-11 underneath. The ESP module itself is also surrounded by a grounded copper layer on the top side of the board as well.
  9. Hello! I just wrapped up a project over in the Hacks & Development forum that I though might be of particular interest to this crowd, so I'm cross-posting. TL;DR, I've developed a serial wifi module that directly replaces the internal Global Village modem. It only offers modem speed, but that's adequate for most tasks that these devices are capable of. Anyway, I'm happy to help anyone build their own, or might offer a few for purchase if there's interest...
  10. I've been playing with these "modems" now for a few days now, and have learned a thing or two: They're as slow as expected The results I was seeing from Fetch in PASV mode are consistent with additional tests I've run grabbing files via HTTP using LYNX and iCab. Max download speed is around 2KB/s and averages more like 1500Bps--basically a 14.4 modem (which makes some sense considering that's what I replaced!). Still, as I've said before, this satisfies my requirements for IRC, SSH, Telnet, I/M, etc.) Slip Options: InterSLIP 1.0.1, the only common option floating
  11. I like it! TBH, I don't think you'd even need to modify the esp_slip_router firmware in any way (although it'd be easy enough to do if you wanted to). From the client IP (PowerBook), you can telnet into the module unauthenticated on port 7777 and set the SSID / PW, show connection status and signal strength, etc. It's light enough weight that I don't think you'd really save much by authoring a custom API. Back in the day, someone authored a Control Strip plugin for InterSLIP to connect / disconnect, which I'm using, so we know InterSLIP can be readily interfaced with. I certainly think so
  12. Huzzah, my boards arrived! I assembled two without issue aside from the diameter of the through-holes for the ESP8266 headers being a bit tight. More importantly, upon install in my PB180 test mule, everything lines up perfectly! I built the following little 6-pin FTDI to RJ-11 programming dongle, and communicating with and flashing the ESP-8266 in-situ works as hoped. Finally, and most importantly, with the ESP SLIP Router firmware flashed to the module, I was able to connect via InterSLIP, telnet into the module, set the SSID / PW
  13. Very helpful information @Trash80toHP_Mini and @Challenger 1983. Interesting question about the internal modem and whether or not if functions when docked. I don't see any reason it couldn't from a hardware standpoint, but would be very surprised if it's selectable when docked. I've been reticent to make any permanent mods to the Duo's board itself that can't be undone as easily as replacing an original module (I'm kind of a stickler for originality), but there are a lot of potential options to explore via the expansion connector if I abandon that principle.
  14. Perhaps, but I'm not so sure. I think the full size and mini docks have their own modem hardware that allows for docked modem use even if the Duo connected doesn't have a modem installed. I'd have to crack open my minidock again to confirm, but I recall being surprised that it had what appeared to be a complete, modular internal modem of its own. That would make sense too considering that, ostensibly (at least according to the various period Global Village and Apple docs I've consumed), the internal modem was optional (although since it includes the power / reset buttons, there'd have to be so
  15. I made some progress here today. Turns out I had both software and hardware problems preventing the Franken-Modem from powering on. The former was the result of not having the Express Modem drivers installed, without which, even though there's an option to select "internal modem", the Duo specific hardware isn't engaged. Certainly could have discovered this sooner if I'd bothered to test my unmolested original modem before starting! I thought I'd established a terminal connection to the internal express modem before, but clearly I'm confusing if with having done that on my 180c. The
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