[NTLK] Charging via the Interconnect port

Morgan Aldridge morgant at makkintosshu.com
Tue Oct 10 09:35:49 PDT 2023

On Tue, Oct 10, 2023 at 12:10 PM Noah Leon <moosefuel at gmail.com> wrote:

> I’ve been tinkering with the idea of charging via a single sync cable.
> Thanks to Matthias’s work, I’ve got a prototype interconnect connector, and
> thanks to Pawel and others I’ve soldered together a serial to usb adapter,
> and now the final piece of the puzzle is to solder on a voltage regulator.
> I’ve been using this document to help:
> https://cdn.preterhuman.net/texts/computing/apple/newton/n2-nidg.pdf#page8

Relieved to see that this is on UNNA.org too!

> My problem is that it doesn’t list the charging voltage anywhere. I would
> assume it would be 7.4v same as the Newton adapter, but I’d like not to fry
> the Newt by accident. Does anyone know?

We discussed this a bit toward the end of the Global Newton User Group
(GNUG) #11. Around 2:21:47 is when we started looking at a voltage chart
(from a different document) and discussing exactly this topic:


There's some valuable information before & after that point too, but please
note that we were looking at the "N2 Power Adapter Designer's Guide", not
the "N2 Newton Interconnect Designer's Guide", so there are likely


Hopefully others can clarify here. :)



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