Searching \ for '[EE] Toggle Switch' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: piclist.com/techref/index.htm?key=toggle+switch
Search entire site for: 'Toggle Switch'.

Exact match. Not showing close matches.
PICList Thread
'[EE] Toggle Switch'
2005\08\27@143019 by Francois Robbertze

flavicon
face
I need to very simple and cheap circuit that will toggle a relay on and of
on a pulse input.

i.e.: first pulse(e.g. a key pressed) will switch relay on
   second pulse will switch the relay off again etc.

I can easily do this with a pic , but I need this to be simple..

Can anyone help me or direct me to WebPages?

Is there a standard component that will be able to do the job?

Thanks

Francois

2005\08\27@144844 by Byron A Jeff

face picon face
On Sat, Aug 27, 2005 at 08:23:58PM +0200, Francois Robbertze wrote:
> I need to very simple and cheap circuit that will toggle a relay on and of
> on a pulse input.
>
> i.e.: first pulse(e.g. a key pressed) will switch relay on
>     second pulse will switch the relay off again etc.
>
> I can easily do this with a pic , but I need this to be simple..

What's simpler than a 12F629 programmed to do this activity? You're
going to need debouncing anyway. Otherwise, the bouncing of the
switch is going to cause the relay to pulse.

So you need to add debounced in front of pulse. So you'll need to
define the delay between pulses.

At the end of the day you're looking for a 555 in monostable mode for a
debounce circuit driving a flip-flop that's configured in toggle
configuration.  So each press of the button will activate the 555 and
clock the flip flop.

Or as I started out with: what's simpler than a 12F629 programmed to
do this activity?

BAJ

2005\08\27@150728 by olin piclist

face picon face
Francois Robbertze wrote:
> I need to very simple and cheap circuit that will toggle a relay on
> and of on a pulse input.
>
> i.e.: first pulse(e.g. a key pressed) will switch relay on
>     second pulse will switch the relay off again etc.
>
> I can easily do this with a pic , but I need this to be simple..
>
> Can anyone help me or direct me to WebPages?
>
>  Is there a standard component that will be able to do the job?

Is this pulse coming from a mechanical switch?  If so, you need to consider
boucing.  A 10F200 can do what you want nicely.

If the pulse is a nice clean digital signal, then what you are asking for is
a flip flop that can be operated in toggle mode.


*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

2005\08\27@155431 by olin piclist

face picon face
Byron A Jeff wrote:
> What's simpler than a 12F629 programmed to do this activity?

A 10F200 to do this activity.

*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

2005\08\27@161444 by Byron A Jeff

face picon face
On Sat, Aug 27, 2005 at 03:54:23PM -0400, Olin Lathrop wrote:
> Byron A Jeff wrote:
> > What's simpler than a 12F629 programmed to do this activity?
>
> A 10F200 to do this activity.

>From a packaging standpoint I wouldn't find that simpler.

Maybe I should make a 10F project my first homebrew PCB item? ;-)

BAJ

2005\08\27@162933 by Mark Rages

face picon face
On 8/27/05, Olin Lathrop <spam_OUTolin_piclistTakeThisOuTspamembedinc.com> wrote:
> Byron A Jeff wrote:
> > What's simpler than a 12F629 programmed to do this activity?
>
> A 10F200 to do this activity.
>

I was an inside a projector the other day (an old RCA TP-66) and I
noticed one of the relays is set up to do this already.  It has a
mechanism like a push-on/push-off power switch built into the relay.
I believe it is the mag/optical sound selector.

By no means the simplest solution (and I have no idea where you'd
source such a relay today), but it's fun to watch.  60's technology in
action.

Regards,
Mark
markrages@gmail
--
You think that it is a secret, but it never has been one.
 - fortune cookie

2005\08\27@163552 by Wouter van Ooijen

face picon face
>>> What's simpler than a 12F629 programmed to do this activity?
>> A 10F200 to do this activity.
> From a packaging standpoint I wouldn't find that simpler.

This is an example where uChip serves the hobbyists very well: the 10F's
are available in 8-pin DIP (2 pins unused). But note that the ICSP pins
are not in the same position as the normal 8-pin chips. But a PCB is
available that makes an 10 mimic the 12F pinout :)

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu


2005\08\27@165333 by Jinx

face picon face
A similar thread from 09/04 - [EE] Toggle switch circuit to turn
a motor on/off

Answers then were as now. Small PIC, two-transistor bistable or
a flip-flop. I've just done a little experimenting myself to replace a
heavy-duty DPDT footswitch (current handling not needed, just
the function) with a 10F and a microswitch

2005\08\27@170431 by Mario Mendes Jr.

flavicon
face
As you said it, a pic can do it, but it sounds to me like you might want
to do this without a pic.  If that is the case, you can try a simple
flip-flop.


-Mario

{Original Message removed}

2005\08\27@171237 by William Chops Westfield

face picon face

On Aug 27, 2005, at 11:23 AM, Francois Robbertze wrote:

> I need to very simple and cheap circuit that will toggle a relay
> on and of on a pulse input.

http://www.edn.com/article/CA472837.html?pubdate=10/28/2004&text=switch

Do you have any spare poles on your relay?

http://www.qsl.net/yo5ofh/hobby%20circuits/
circuits_controlling_relays.htm

2005\08\27@211142 by Byron A Jeff

face picon face
On Sat, Aug 27, 2005 at 10:35:50PM +0200, Wouter van Ooijen wrote:
> >>> What's simpler than a 12F629 programmed to do this activity?
> >> A 10F200 to do this activity.
> > From a packaging standpoint I wouldn't find that simpler.
>
> This is an example where uChip serves the hobbyists very well: the 10F's
> are available in 8-pin DIP (2 pins unused). But note that the ICSP pins
> are not in the same position as the normal 8-pin chips. But a PCB is
> available that makes an 10 mimic the 12F pinout :)

As Olin has pointed out on numerous occasions, the 6 pin micro pinout
of the 10F is one of its greatest advantages. If going with an 8 pin DIP,
why not use a 12F part?

BAJ

2005\08\27@213145 by Charles Craft

picon face
If a 10F part has enough umph to do the job it's about half the price of a 12F.

I think there have been some recent threads about what hobbyists will pay for parts.
That $.80 will buy about 1/10 of a cup of coffee at Starbucks.  :-p



{Original Message removed}

2005\08\27@215640 by Jims Email

picon face

A 12C507




----- Original Message -----
From: "Byron A Jeff" <.....byronKILLspamspam@spam@cc.gatech.edu>
To: "Microcontroller discussion list - Public." <piclistspamKILLspammit.edu>
Sent: Saturday, August 27, 2005 1:48 PM
Subject: Re: [EE] Toggle Switch


> On Sat, Aug 27, 2005 at 08:23:58PM +0200, Francois Robbertze wrote:
> > I need to very simple and cheap circuit that will toggle a relay on and
of
{Quote hidden}

> -

2005\08\28@024124 by Francois Robbertze

flavicon
face
Thank for all the inputs.

I like the idiee op the relay with the spare pole the most for this
application.

Francois

{Original Message removed}

2005\08\28@031933 by Russell McMahon

face
flavicon
face
Electronically, many flip-flop ICs can be made to toggle with pulses.
Google for flip-flop toggle. Advantage is that any device may be
driven from the toggled output.

   RM

> I like the idiee op the relay with the spare pole the most for this
> application.

>> > I need to very simple and cheap circuit that will toggle a relay
>> > on and of on a pulse input.

2005\08\28@124741 by Wouter van Ooijen

face picon face
> As Olin has pointed out on numerous occasions, the 6 pin micro pinout
> of the 10F is one of its greatest advantages. If going with
> an 8 pin DIP, why not use a 12F part?

price, use of existing (prototype) hardware, ease of switching to the
6-pin smd lateron

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu


More... (looser matching)
- Last day of these posts
- In 2005 , 2006 only
- Today
- New search...