6 May
2013
6 May
'13
6:55 p.m.
Can anyone understand why someone would attached a stepper motor to an
S100 buss terminator board? See http://www.ebay.com/itm/230976941854 for
headscratching goodness.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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6 May
6 May
7:34 p.m.
On Mon, 6 May 2013, David Griffith wrote:
Can anyone understand why someone would attached a
stepper motor to an
S100 buss terminator board? See http://www.ebay.com/itm/230976941854
for headscratching goodness.
The experimenter/builder didn't have a prototyping board but had a buss
terminator board handy?
7 May
7 May
3:59 a.m.
----- Original Message -----
From: "Tothwolf" <tothwolf at concentric.net>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Tuesday, May 07, 2013 3:34 AM
Subject: Re: stepper motor on S100 buss terminator
On Mon, 6 May 2013, David Griffith wrote:
The board is silk scrrened so its not a home built lashup, 5 wire on tyhe
motor so it could be 4 pole star, but only 2 dfrive transitors ?
Can anyone understand why someone would attached
a stepper motor to an
S100 buss terminator board? See http://www.ebay.com/itm/230976941854 for
headscratching goodness.
The experimenter/builder didn't have a prototyping board but had a buss
terminator board handy?
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.2241 / Virus Database: 3162/5805 - Release Date: 05/07/13
8 May
8 May
12:37 p.m.
The board is silk scrrened so its not a home built
lashup, 5 wire on tyhe
motor so it could be 4 pole star, but only 2 dfrive transitors ?
I thought the TO220 packages o nthe PCB were most probably 3-terminal
regualtors (7805-things) to supply the terminators. The stepper driver is
those ICs hung off wires on the solder side. And it's quite possible
there's a driver IC amongst them.
-tony
5:17 p.m.
----- Original Message -----
From: "Tony Duell" <ard at p850ug1.demon.co.uk>
To: <cctalk at classiccmp.org>
Sent: Wednesday, May 08, 2013 8:37 PM
Subject: Re: stepper motor on S100 buss terminator
DaveH
The board is
silk scrrened so its not a home built lashup, 5 wire on
tyhe
motor so it could be 4 pole star, but only 2 dfrive transitors ?
I thought the TO220 packages o nthe PCB were most probably 3-terminal
regualtors (7805-things) to supply the terminators. The stepper driver is
those ICs hung off wires on the solder side. And it's quite possible
there's a driver IC amongst them.
-tony
Arrr ,that will teach me to look before I type, haddent spotted the pic
of the other side DOHH -----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.2241 / Virus Database: 3162/5808 - Release Date: 05/08/13
7 May
7 May
12:09 p.m.
Can anyone understand why someone would attached a stepper motor to an
S100 buss terminator board? See http://www.ebay.com/itm/230976941854 for
headscratching goodness.
My guess is that they wanted to interface the stepper motor to an S100
system but had no prototyping board (or no spare slot) to hand. So they
kludged the itnerfac etogether and picked up the necessary signasl on the
terminator board.
Not neat and tidy, but not totally crazy either.
-tony
4245
days inactive
4247
days old
5 comments
4 participants
participants (4)
-
ard＠p850ug1.demon.co.uk -
david＠hheng.plus.com -
dgriffi＠cs.csubak.edu -
tothwolf＠concentric.net