[GreenKeys] Basic autostart question

[Dave Wade]

Folks,
 My Creed7B has a timer on. There is a little worm drive that winds up a
slotted weight when the machine is idle. A toggle switch lever fits through
the slot which switches the motor off as the weight is lifted.
When a start bit operates the magnet, the weight is dropped, and the switch
is closed and the motor starts. Yes you may loose a first character, but it
needs no input from any TNC.
Dave
G4UGM

> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net <greenkeys-
> bounces at mailman.qth.net> On Behalf Of Steve Garrison
> Sent: 11 July 2019 14:19
> To: 'John Lawson' <john at tubetestingpros.com>;
> greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] Basic autostart question
> 
> John,
> 
> From at least one of the other replies, I don't think the M15 itself can
turn its
> motor on/off, but there may be models that can.  I've only had one M15 in
> the past and that one could not control its own motor.
> 
> I currently have two M28KSRs that have some external motor control,  You
> could implement the same control as I'm using with your M15 and M28s as
> well.  One of my M28s has a SSR (Solid State Relay) controlled AC outlet
that
> the M28 is plugged into that turns the entire machine off after a period
of
> inactivity.  Then the machine powers up again once the loop becomes active
> again.  The other M28 has the loop sense circuitry and the SSR mounted in
> the LESU, so nothing is need externally.  When this M28 has the motor
> turned off it is only the motor, not the rest of the power into the
machine.
> Obviously I did some rewiring of the LESU, but documented it with a nice
> schematic for the next lucky guy or gal that inherits this beauty.
> 
> What are you using to demod your ITTY tones?  I'm using Volpe's Demod
> board most of the time (sometimes a ST-6 or Dovetron)) and for the motor
> control, a board from K0TTY (who is now a SK), connected to a SSR.
> 
> Hope that helps.
> 
> Steve G.N4TTY
> 
> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net <greenkeys-
> bounces at mailman.qth.net> On Behalf Of John Lawson
> Sent: Wednesday, July 10, 2019 7:25 PM
> To: greenkeys at mailman.qth.net
> Subject: [GreenKeys] Basic autostart question
> 
> 
> Greetings Greenkeys Friends -
> 
> I subscribed to GK for several years, several years ago.  Newly retired,
I'm
> back to playing with some of my neglected toys.
> 
> I am currently running a Mod 15, Mod 28KSR, and Mod 33ASR.
> 
> A friend has a number of TTY machines, and I told him of ITTY. He would
like
> to have his Mod15RO (with a nice ASSOCIATED PRESS placard on it) be
> operational with autostart -   wake up, print something, go back to sleep.
> 
> I have spent some time researching this, but the actual 'orthodox'
> electronic / electrical method of how ITTY communicates Autostart isn't
clear
> yet. So given I have ITTY, and a working TU, loop supply, etc., and a
Mod15 -
> how does the relay
> 
> in the 15 know when to start, and stop, the motor?
> 
> I can copy ITTY FB, can read it using FLDIGI, and as soon as the 15 gets
> finished with it's lube/tweak/adj work on the bench, I'll use it and the
> 28 for printing ITTY in the shack.
> 
> 
> TIA!
> 
> John KB6SCO
> 
> Carson City
> 
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