Recent content by sutekh

If that's the case and you can't find one designed around a 2S cell arrangement (would make sense now that I think about it, since 3.7->5v is only a 1.3v gap while 7.4->5 is 2.4...) then I'd bag that idea TBH. Just get any of the many available 2s li-ion / lipo charge boards that are readily...

Yep, as you now know, blank white screen almost certainly means torn / disconnected cable. File this under very tedious but possible to repair. Here's a writeup of how I fixed mine, which is still working great BTW: https://68kmla.org/bb/index.php?threads/basket-case-powerbook-180c.36637

As long as you're comfortable using a separate charge port (or switch like I've implemented in my design you linked to above) this is quite simple, yes. I'll take a stab at your questions: 1) Assuming your power bank is using Li-Ion (not LiFePO4 or another chemistry) and is a 2S design (two...

FWIW, one of my PB180cs exhibited the same problem (blank white screen) due to a broken ribbon cable. You can read the saga here: https://68kmla.org/bb/index.php?threads/basket-case-powerbook-180c.36637/

I had a post about this I thought, but looks like it was lost in the purge 🤷‍♂️ Any of the cheaply available 5.5mm x 2.1mm solder-on connectors (or an adapter if you prefer) should serve nicely.

Agree it's a great problem to have! Just be conscious of the performance implications @macuserman. I have SCSI2SDs in my 180s vs. BlueSCSI because the performance delta between the two is noticeable and measurable on a 68030. BlueSCSI is an awesome project with great support and ease of use though!

Very nice work. What material are you using for option #1? I tried something similar using CF infused ABS, but delamination between the printed layers was still a weak point when subjected to lateral force or when torquing the mounting hardware. I ended up making a small mold and now cast new...

When you say that you "checked the barrel connections and found the tip and sleeve shorted to ground", is that on the adapter side or within the PB? Since it sounds like you've opened it up to remove the connector, what do you read on the battery terminals? Are they shorted together? What...

Thinking a bit more about this, it'd be neat to combine your injection molding and stamped metal contact capabilities and design a battery enclosure that allowed the end-user to drop in cells of their choosing without soldering. It's altogether too easy to short out or over-heat the cells while...

Very cool! I'm no help on the 128K front, but would love to try it on my 512K and other 68Ks. I've long sought a wget-like utility, and that "save to file" option looks like just the thing!

Yes, the goal would be a direct OE replacement without any caveats but much higher capacity.

Mine too! Awful video and worse audio, but you get the idea :)  

I'd consider it, but I don't think the current design is necessarily production / consumer ready. E.g., forget to flip the switch from discharge to charge after plugging in, bad things could happen. I'm also not sure I'm comfortable accepting the potential liability of selling lithium-based...

Fantastic work! Kit order placed. Should be just the thing for my LCIII :)  Thank you! Out of curiosity, what benchmarking utility is that @Chopsticks? It looks superior to any of the 4-5 I currently have installed, and I can't seem to identify it!

Yep, that's your PRAM battery. Likely in need of replacement. If you're handy with a soldering iron, you can grab one here: https://www.amazon.com/gp/product/B07W4NWHJ8 Glad you got the battery free without too much drama! I had one similarly fused in one of my 180cs when I originally took...