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About max1zzz

  • Birthday 01/05/1997

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    Surrey, England

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  1. @cheesestraws@mattsoft@olePigeon Thanks I'll build the next revision of board to be blink on for activity
  2. Simple question, Where activity LED's in older macs on blinking off for activity or off blinking on (Like modern pc's)? I need to sort out the activity LED circuit on my SCA to SCSI adapters (Which techknight pointed out to me was incorrect several years ago but I never got around to fixing...) and am trying to figure out which way to wire it but I don't have anything with both a original HDD and a activity indicator to check
  3. My PB100 has no RFID paint on the palmrest I need to double check but I don't see any reason why it shouldn't work without another antenna
  4. Ooh, So with the SCSI to Ethernet support I could have wifi on my PB100, Awesome! Which reminds me I need to make the couple of corrections to my 2.5" board after which I'll post the PCB files for anyone that is interested
  5. @Kai Robinson Have you found a source of the DRAM ic's for those sticks? I looked at building some a while back but couldn't find the IC's for anything approaching a reasonable price....
  6. For the 165 you could use a RaSCSI board, I made a modified version of @landoGriffin's hardware design designed to fit in a PB's HDD bay. Otherwise it's a SCSi2SD as others have said (If you can get hold of one that is, the last few times I have looked the 2.5" version has been out of stock
  7. It's not something I would have usually looked at, It was last Christmas and I was board and looking for something stupidly old that I could shoehorn Windows 10 onto to send to one of our shops as a joke refurb, I only picked it up as it looked quite chunky at which point I realised it was sitting on a dock which I separated it form to find the laptop was a prototype (the dock was not). If It wasn't for me trolling to scrap pile for something to wind up one of our shop managers with it would have gone to recycling I would actually love to find a QS on it, the G4 towers (And G3 B/
  8. I always keep a eye on the scrap pile at work and occasionally find some interesting things, probably the most interesting things I picked up where a Prototype 17" 2007 MBP (Sadly dead) and a Prototype Dell Latitude X200 (working but with broken hinges, dead battery (No surprise) and missing HDD cable & ram cover) which I'm currently looking for IDE SSD and battery for (Having fixed it's other issues) The X200 is actually a really impressively thin and light laptop for the early 2000's (It's as thin and light as my Thinkpad L480). No idea what any of our customers where doing with prototyp
  9. I did think about making my board using a CM4 but the lack of stock anywhere made me go for the zero, It would be nice to have the added performance of the Pi 4 for the newer powerbooks. I would be a little concerned about the Pi4's reputation for running hot though, in the confines of a PB HDD bay this might cause a issue. There is only one way to know for sure though!
  10. Many years ago I used to make terminated adapters that terminated the upper bits of the bus which provided better compatibility with newer drives, annoyingly I can't find good pictures of them anywhere though I still have a bunch of the PCB's left that I should assemble one day, but I'm thinking of redrawing the board with a better layout I'm actually surprised the top adapter causes problems, I count 9 elements per resistor pack for a total of 27 termination resistors which should be enough to terminate all the signals on the SCA connector (There are 26 IIRC - at least my ada
  11. Yep, they look like the ones!
  12. If it needs three I would expect them to be the split packs with two resistors per pin, I can't be 100% on that but all the drives I have had with 3 packs have used the split packs, if you have continuity form one end of where the resistor packs go ground you need the split packs Something like this is likely what you need: https://uk.farnell.com/bourns/4610x-104-221-331l/res-n-w-dual-terminator-330r-0/dp/2908124
  13. There are two types used as far as I know, the first is a simple SIL resistor pack, typically 9 elements with a value of 110 ohms. Drives using this arrangement typically have two resistor packs The second has two elements per pin, one pulling up to TERMPWR and one pulling down to GND, typically the pull up element is 220ohm and the pull down one is 330 ohm. Drives using this arrangement typically have 3 resistor packs It's pretty easy to work out what kind the drive expects, you just need to test for continuity at the ends of each resistor pack to ground, if one end is
  14. OK..... I think I have found the issue and I'm a little embarrassed as to what it was, turns out it was a cold solder joint on one of the termination resistors..... I designed the board using 0603 resistors forgetting the reel or 110ohm resistors I had where 0805, turns out bodgeing 0805's onto 0603 pads isn't the best idea! My PB145B now boots from my Pi Zero powered RaSCSI just fine And the board (ignore that bodge wire - it is a leftover from debugging and is not needed) I need to add a anti backfeed diode to the +5v rail on the board to stop the P
  15. If they are form ITEAD they are genuine, if they are form anyone else they are knockoffs
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