Relay circuit for toy

[emetzger]

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

Erik
http://i1141.photobucket.com/albums/n596/emetzger3/a6734434.jpg
http://i1141.photobucket.com/albums/n596/emetzger3/e5c3b84e.jpg
http://i1141.photobucket.com/albums/n596/emetzger3/86cac7df.jpg

http://i1141.photobucket.com/albums/n596/emetzger3/3179e7d6.jpg

 

[Randy Day]

In article <21074457-5e94-4962-9430-
556cb647b89f@a18g2000yqj.googlegroups.com>,
emetzger1974@yahoo.com says...

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

The 555 timer is your best bet. It's
tiny, not many parts needed:

http://www.555-timer-circuits.com/operating-modes.html

Depending on how much current your bug
draws to operate, you can wire it up to
pin 3 and ground or pin 3 and +v.

You'll need fairly large values for R1,
R2 and C. Here's a calculator:

http://www.bowdenshobbycircuits.info/555.htm


HTH

 

[emetzger]

On May 3, 9:58 pm, Randy Day <randy....@sasktel.netx> wrote:

In article <21074457-5e94-4962-9430-
556cb647b...@a18g2000yqj.googlegroups.com>,
emetzger1...@yahoo.com says...

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

The 555 timer is your best bet. It's
tiny, not many parts needed:

http://www.555-timer-circuits.com/operating-modes.html

Depending on how much current your bug
draws to operate, you can wire it up to
pin 3 and ground or pin 3 and +v.

You'll need fairly large values for R1,
R2 and C. Here's a calculator:

http://www.bowdenshobbycircuits.info/555.htm

HTH

Randy,
Thank you for the response, but Im not familiar with electronics. I
have no idea what you sent or how to hook a relay timer to this toy.
Is there a 30 second or close to relay timer I can purchase and solder
on to this toy? It needs to be run off the small battery in the unit
or double A- 9 volt battery.
Thanks,
Erik

 

[Rich Webb]

On Wed, 4 May 2011 04:49:20 -0700 (PDT), emetzger
<emetzger1974@yahoo.com> wrote:

On May 3, 9:58 pm, Randy Day <randy....@sasktel.netx> wrote:
In article <21074457-5e94-4962-9430-
556cb647b...@a18g2000yqj.googlegroups.com>,
emetzger1...@yahoo.com says...

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

The 555 timer is your best bet. It's
tiny, not many parts needed:

http://www.555-timer-circuits.com/operating-modes.html

Depending on how much current your bug
draws to operate, you can wire it up to
pin 3 and ground or pin 3 and +v.

You'll need fairly large values for R1,
R2 and C. Here's a calculator:

http://www.bowdenshobbycircuits.info/555.htm

HTH

Randy,
Thank you for the response, but Im not familiar with electronics. I
have no idea what you sent or how to hook a relay timer to this toy.
Is there a 30 second or close to relay timer I can purchase and solder
on to this toy? It needs to be run off the small battery in the unit
or double A- 9 volt battery.

It could be done but I doubt very much if what you're looking for is
available as a commercial off-the-shelf item.

Relays tend to be (relatively) power hungry and so not terribly battery
friendly. A latching relay obviates that disadvantage somewhat. Your
best bet would probably be using a transistor switch; bipolar if you can
absorb the voltage drop or a FET otherwise.

A CMOS version of the 555 timer would probably do for the actuator,
since they're fairly bullet-proof, low power, and an exact timing
interval probably isn't critical.

(used fixed-width font to view)

Something like this could be a starting point, assuming that the "bug"
only draws a few mA while operating. Long-period 555s aren't that
predictable (leakage currents) and large value capacitors won't be right
on, typically, so expect to do some tweaking. Still, it's a place to
start...

+9V
.-------------------------------.
| |
.------------o--o---. |
| | | |
| | | .--o-.
.-. .----o------o----. | |
| | | 4 8 | |LOAD|
39K | | | | | |
'-' | | '--o-'
| | | |
o-------o 7 | 22K |
| | | ___ |/
| | CMOS 3 o----------|___|--o--| 2N4401
.-. | 555 | | |>
| | | | | |
180K | | | | .-. |
'-' | | 220K | | |
| | | | | |
o-------o 6 | '-' ===
| | | | GND
o-------o 2 1 5 | |
| '-----o-------o--' |
| | | ===
| | | GND
| | |
--- | ---
220u --- | --- 0.01u
| | |
| |
| | |
=== === ===
GND GND GND
(created by AACircuit v1.28.6 beta 04/19/05 www.tech-chat.de)

--
Rich Webb Norfolk, VA

 

[emetzger]

On May 4, 6:49 am, emetzger <emetzger1...@yahoo.com> wrote:

On May 3, 9:58 pm, Randy Day <randy....@sasktel.netx> wrote:





In article <21074457-5e94-4962-9430-
556cb647b...@a18g2000yqj.googlegroups.com>,
emetzger1...@yahoo.com says...

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

The 555 timer is your best bet. It's
tiny, not many parts needed:

http://www.555-timer-circuits.com/operating-modes.html

Depending on how much current your bug
draws to operate, you can wire it up to
pin 3 and ground or pin 3 and +v.

You'll need fairly large values for R1,
R2 and C. Here's a calculator:

http://www.bowdenshobbycircuits.info/555.htm

HTH

Randy,
Thank you for the response, but Im not familiar with electronics. I
have no idea what you sent or how to hook a relay timer to this toy.
Is there a 30 second or close to relay timer I can purchase and solder
on to this toy? It needs to be run off the small battery in the unit
or double A- 9 volt battery.
Thanks,
Erik- Hide quoted text -

- Show quoted text -

If anyone can help me on this, I would appreciate it. Can I use this
item to solder onto the toy or do I have to figure out how to put a
555 timer circuit on this bug. Im clueless.
Thanks,
Erik

http://i1141.photobucket.com/albums/n596/emetzger3/relaytimer.jpg

 

[George Herold]

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

 

[Jamie]

emetzger wrote:

On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around

like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.


Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest. I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik
anything you buy will most likely not fit in that shell.

What you need to do is use a P-channel PowerFet, a small one, one
resistor, a cap and one momentary switch to turn it on.

I suppose it could also be done with a N-channel fet, in any case, all
one needs to do is have the Cap and R in parallel to drive the gate to
the common which will turn it on. The momentary switch will simply
charge the cap and the R will regulate the discharge time to turn it off.

For that little toy, those components should fit inside or out side
glued on with out adding any significant wait or power drain..

I don't have the facilities to pop a ASCII schematic in the channel,
nor would I expect you to understand it. This is a static sensitive
device until you get it solder together..

Maybe one of the other guys here can post a simply schematic of what I
am talking about..

Jamie

 

[Jamie]

emetzger wrote:

On May 4, 4:53 pm, Jamie
jamie_ka1lpa_not_valid_after_ka1l...@charter.net> wrote:

emetzger wrote:

On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around

like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest. I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik

anything you buy will most likely not fit in that shell.

What you need to do is use a P-channel PowerFet, a small one, one
resistor, a cap and one momentary switch to turn it on.

I suppose it could also be done with a N-channel fet, in any case, all
one needs to do is have the Cap and R in parallel to drive the gate to
the common which will turn it on. The momentary switch will simply
charge the cap and the R will regulate the discharge time to turn it off.

For that little toy, those components should fit inside or out side
glued on with out adding any significant wait or power drain..
That was -----------------------------^ weight ^^^^^^^^^^^------------
I don't have the facilities to pop a ASCII schematic in the channel,
nor would I expect you to understand it. This is a static sensitive
device until you get it solder together..

Maybe one of the other guys here can post a simply schematic of what I
am talking about..

Jamie- Hide quoted text -

- Show quoted text -


Jamie,
Thank you for the reply. I really don't know what you just said but it
sounds good.
Erik

 

[emetzger]

On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest. I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik

 

[Rich Webb]

On Wed, 4 May 2011 14:11:55 -0700 (PDT), emetzger
<emetzger1974@yahoo.com> wrote:

On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:
On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest. I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Your best bet may be to search the cat toy sites online and find
something similar that's ready-made.

Or ... take the opportunity to start playing with electronics! Pick up
something like this
<http://www.makershed.com/ProductDetails.asp?ProductCode=MKSL1> and get
started. No magic involved...

--
Rich Webb Norfolk, VA

 

[emetzger]

On May 4, 4:53 pm, Jamie
<jamie_ka1lpa_not_valid_after_ka1l...@charter.net> wrote:

emetzger wrote:
On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around

like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest.  I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik

anything you buy will most likely not fit in that shell.

  What you need to do is use a P-channel PowerFet, a small one, one
resistor, a cap and one momentary switch to turn it on.

  I suppose it could also be done with a N-channel fet, in any case, all
one needs to do is have the Cap and R in parallel to drive the gate to
the common which will turn it on. The momentary switch will simply
charge the cap and the R will regulate the discharge time to turn it off.

   For that little toy, those components should fit inside or out side
glued on with out adding any significant wait or power drain..

   I don't have the facilities to pop a ASCII schematic in the channel,
nor would I expect you to understand it. This is a static sensitive
device until you get it solder together..

   Maybe one of the other guys here can post a simply schematic of what I
am talking about..

  Jamie- Hide quoted text -

- Show quoted text -

Jamie,
Thank you for the reply. I really don't know what you just said but it
sounds good.
Erik

 

[John Fields]

On Wed, 4 May 2011 04:49:20 -0700 (PDT), emetzger
<emetzger1974@yahoo.com> wrote:

On May 3, 9:58 pm, Randy Day <randy....@sasktel.netx> wrote:
In article <21074457-5e94-4962-9430-
556cb647b...@a18g2000yqj.googlegroups.com>,
emetzger1...@yahoo.com says...

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

The 555 timer is your best bet. It's
tiny, not many parts needed:

http://www.555-timer-circuits.com/operating-modes.html

Depending on how much current your bug
draws to operate, you can wire it up to
pin 3 and ground or pin 3 and +v.

You'll need fairly large values for R1,
R2 and C. Here's a calculator:

http://www.bowdenshobbycircuits.info/555.htm

HTH

Randy,
Thank you for the response, but Im not familiar with electronics. I
have no idea what you sent or how to hook a relay timer to this toy.
Is there a 30 second or close to relay timer I can purchase and solder
on to this toy? It needs to be run off the small battery in the unit
or double A- 9 volt battery.
Thanks,
Erik

---
You don't need a "double A- 9 volt battery", what you need is a source
of phlogiston.

--
JF

 

[George Herold]

On May 4, 5:11 pm, emetzger <emetzger1...@yahoo.com> wrote:

On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:





On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest.  I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik- Hide quoted text -

- Show quoted text -

Yeah the first thing to do is buy three more, so you can break some
and still have one left for the cat.

Then take one apart and see how the circuit works. Do you have a
cheap DMM? Less than $10.

I don't think there are any 'tab A in slot B' answers to your
question.

George H.

 

[emetzger]

On May 4, 8:52 pm, George Herold <gher...@teachspin.com> wrote:

On May 4, 5:11 pm, emetzger <emetzger1...@yahoo.com> wrote:





On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest.  I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik- Hide quoted text -

- Show quoted text -

Yeah the first thing to do is buy three more, so you can break some
and still have one left for the cat.

Then take one apart and see how the circuit works.  Do you have a
cheap DMM?  Less than $10.

I don't think there are any 'tab A in slot B' answers to your
question.

George H.
George,

I don't know what DMM stands for so probably don't. I do have 5 of
these toys to play around with so I could test it with some sort of
555 timer. I just don't know what wires to hook up for an extended on
off time.
Rich,
Thanks for the info on the electronic kit. I may give it a try.
Thank you,
Erik

 

[Rich Grise]

emetzger wrote:

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

Erik
http://i1141.photobucket.com/albums/n596/emetzger3/a6734434.jpg
http://i1141.photobucket.com/albums/n596/emetzger3/e5c3b84e.jpg
http://i1141.photobucket.com/albums/n596/emetzger3/86cac7df.jpg

http://i1141.photobucket.com/albums/n596/emetzger3/3179e7d6.jpg

Find a local clock shop, and see if you can buy a mechanical clock
movement; tie a piece of yarn to the balance wheel or the escapement,
and you'll keep that filthy evil animal occupied for hours as it
tries to capture and torture the yarn.

Another thing you can do to entertain a cat is to give it a piece
of Scotch tape.

Good Luck!
Rich

 

[petrus bitbyter]

"emetzger" <emetzger1974@yahoo.com> schreef in bericht
news:21074457-5e94-4962-9430-556cb647b89f@a18g2000yqj.googlegroups.com...

I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

Erik
http://i1141.photobucket.com/albums/n596/emetzger3/a6734434.jpg
http://i1141.photobucket.com/albums/n596/emetzger3/e5c3b84e.jpg
http://i1141.photobucket.com/albums/n596/emetzger3/86cac7df.jpg

http://i1141.photobucket.com/albums/n596/emetzger3/3179e7d6.jpg

Looking at the pictures I'm sure you have no space for a relay or an extra
battery. Even a 555 timer will not do. It's not the chip itself but the
timing capacitor that is not likely to get small enough to fit. An off the
shelf solution is completely beyond my imagination. So the only way to go is
making something yourself. But that's a hard way. No challenge for a
designer but next to impossible for a layman.

If I had to make one for myself the first thing I want to find out the
available space. Then I want to know the electrical values involved. So what
battery is used (type, voltage, capacity) and what current is drawn when the
device is on. As there is some motor to run, the inrush current also is an
important thing I want to know. With that knowledge I'd decide what timing
device to use, what driver is required and how to connect it to the inner
electronics of the gadget.

petrus bitbyter

 

[petrus bitbyter]

"George Herold" <gherold@teachspin.com> schreef in bericht
news:81049242-9876-4a25-bbea-4e029dedda35@p18g2000yqj.googlegroups.com...
On May 4, 9:52 pm, George Herold <gher...@teachspin.com> wrote:

On May 4, 5:11 pm, emetzger <emetzger1...@yahoo.com> wrote:





On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a
toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where
I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest. I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik- Hide quoted text -

- Show quoted text -

Yeah the first thing to do is buy three more, so you can break some
and still have one left for the cat.

Then take one apart and see how the circuit works. Do you have a
cheap DMM? Less than $10.

I don't think there are any 'tab A in slot B' answers to your
question.

George H.- Hide quoted text -

- Show quoted text -

| DMM is a digital multi meter. You can use it to measure voltage,
| current, resistance, and sometimes other things. It would be a good
| first piece of electronics test gear. You could use it to measure the
| battery voltage and current in your circuit. I think the problem you
| will have is not very much voltage. With only 3 volts or so it might
| be hard to make a 555 timer circuit work. (I think?)
|
| George H.
|

Minimum guaranteed operation voltage of a CMOS 555 depends on the
manufacturer. Some say 3V, others 1.5V. A problem may arise for the
dimensions of the timing capacitor. I did not calculate it (yet) but you may
need a >100uF capacitor which has to fit in the available space.

petrus bitbyter

 

[Rich Webb]

On Fri, 6 May 2011 11:32:08 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

On May 4, 9:52 pm, George Herold <gher...@teachspin.com> wrote:
On May 4, 5:11 pm, emetzger <emetzger1...@yahoo.com> wrote:





On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest.  I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik- Hide quoted text -

- Show quoted text -

Yeah the first thing to do is buy three more, so you can break some
and still have one left for the cat.

Then take one apart and see how the circuit works.  Do you have a
cheap DMM?  Less than $10.

I don't think there are any 'tab A in slot B' answers to your
question.

George H.- Hide quoted text -

- Show quoted text -

DMM is a digital multi meter. You can use it to measure voltage,
current, resistance, and sometimes other things. It would be a good
first piece of electronics test gear. You could use it to measure the
battery voltage and current in your circuit. I think the problem you
will have is not very much voltage. With only 3 volts or so it might
be hard to make a 555 timer circuit work. (I think?)

National's CMOS version is spec'd down to 1.5 V and they are available
in some pretty small packages.

As was noted somewhere else on the thread, though, enough capacitance to
run a 30 sec on - 30 sec off cycle with a 555 would probably make the
entire package far too large.

Something that might work -- not mentioned earlier for fear of scaring
the OP away too soon -- would be a little 6- or 8-pin SOIC
microcontroller running off of an internal clock. That, an SOT-23
transistor, and similar catch diode for the motor could probably all be
squeezed into the available space with a little creativity.

--
Rich Webb Norfolk, VA

 

[George Herold]

On May 4, 9:52 pm, George Herold <gher...@teachspin.com> wrote:

On May 4, 5:11 pm, emetzger <emetzger1...@yahoo.com> wrote:





On May 4, 11:53 am, George Herold <gher...@teachspin.com> wrote:

On May 3, 9:39 pm, emetzger <emetzger1...@yahoo.com> wrote:> I have a toy bug that when turned on it vibrates and walkes around
like a live bug. I am interested in putting some sort of time relay
that will run it for 30 seconds and shut it off for 30 seconds. Can
someone suggest a relay timer that I can purchase for this and where I
can solder it onto the unit. I will probably run it with 2 double A
batteries. Thank you for your help.

(snip picutres)

Those little bugs run off a few button cells. (I think).
The vibrator is like those in cell phones.
Do you picture the timer riding on top of the bug?
I don't think it will work very well if you load it down with a
9 volt battery and a relay.

The first thing you might do is measure how much current the vibrator
draws.

George H.

Thank you guys for the help. The main reason I want a time relay is to
conserve batterys and peak my cats interest.  I wasn't sure If a relay
would run off the small battery that is already in it. I know nothing
about electronics, was just hoping someone could tell me to buy a
specific timer and solder wire A to pin B.

Thanks,
Erik- Hide quoted text -

- Show quoted text -

Yeah the first thing to do is buy three more, so you can break some
and still have one left for the cat.

Then take one apart and see how the circuit works.  Do you have a
cheap DMM?  Less than $10.

I don't think there are any 'tab A in slot B' answers to your
question.

George H.- Hide quoted text -

- Show quoted text -

DMM is a digital multi meter. You can use it to measure voltage,
current, resistance, and sometimes other things. It would be a good
first piece of electronics test gear. You could use it to measure the
battery voltage and current in your circuit. I think the problem you
will have is not very much voltage. With only 3 volts or so it might
be hard to make a 555 timer circuit work. (I think?)

George H.

 

[Randy Day]

In article <tni8s6l0uprs9jld4i38244ppo9ea93acf@4ax.com>,
bbew.ar@mapson.nozirev.ten says...

[snip]

As was noted somewhere else on the thread, though, enough capacitance to
run a 30 sec on - 30 sec off cycle with a 555 would probably make the
entire package far too large.

Something that might work -- not mentioned earlier for fear of scaring
the OP away too soon -- would be a little 6- or 8-pin SOIC
microcontroller running off of an internal clock. That, an SOT-23
transistor, and similar catch diode for the motor could probably all be
squeezed into the available space with a little creativity.

Yabbut, isn't there an unwritten rule that
whoever suggests a micro has to supply the
source code?

</wide-eyed innocence>