OK, after studying the circuits and looking at the notes from Marty
Goodman, I *think* I understand what the TPDD2 cable actually does. I'll
have to build up a circuit to test, but I do believe I understand the point
of the components on the circuit board on the cable are doing.
According to the
- Original Message -
From: Geoffrey Oltmans
To: Model 100 Discussion
Sent: Thursday, January 14, 2016 4:13 PM
Subject: Re: [M100] TPDD2 Data cable pinout?
On Thu, Jan 14, 2016 at 2:38 PM, ultimate quantifier <ven...@hotmail.com>
wrote:
"Does it work okay?" ya.
From: M100 <m100-boun...@lists.bitchin100.com> on behalf of Geoffrey Oltmans
<oltma...@gmail.com>
Sent: Thursday, January 14, 2016 9:13 PM
To: Model 100 Discussion
Subject: Re: [M100] TPDD2 Data cable pinout?
I'm pretty sure you can buy those connectors. There was a lady I talked to
a long time ago who had built her own replacement cables for connecting
knitting machine to Brother FB100 and IIRC they didn't look kludged.
-- John.
I don't really remember but I don't think anything happens when you turn on
the drive. It just sits there.
Ron Wiesen may be able to help you... I have a vague recollection of some
short BASIC code to send a test command and get a response. I know I've
seen it and I thought it was Ron's.
You
That's useful, and I must confess I was looking at the wrong part of the
schematic! ;)
I suspected that it must not be a straight through cable, because that
would be too easy. From his description it sounds like he ran across three
transistors, SOT-23 packages I'm guessing. According to a cross
Yep, that makes sense. The inputs to the TPDD should already take care of
this on the input side... they are clamped to the Voutput low/high of the
buffer. On the flipside, the outputs on the TPDD have diode protection to
prevent damage if something is mis-wired, but no way to generate the normal
On Tue, Jan 12, 2016 at 11:40 AM, Geoffrey Oltmans wrote:
> That's useful, and I must confess I was looking at the wrong part of the
> schematic! ;)
>
> I suspected that it must not be a straight through cable, because that would
> be too easy. From his description it sounds
Sorry I looked the body of the email over and couldn't find it then after
sending I saw the info in the subject line. But I have not heard of any
one successfully reverse engineering one if these. It spears to have
"extras" in the cable.
Sorry.
On Monday, January 11, 2016, Geoff Oltmans
Here’s a document from Marty Goodman on the subject:
http://ratthing.com/club100/tpdd.do
christopher
On 20160112, 00:10, "M100 on behalf of Geoff Oltmans"
wrote:
>Does anyone have the pinout for the data cable? The
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