Schematics for mini foil scoring machine

[Julie C.]

I'm looking for the schematics of a battery operated minature scoring
machine, something similar to the Favero MINI-02 (
http://www.favero.com/en/com/mini02.htm ) , that I could make myself.

I want a circuit that signals each time the foil tip is pressed. It doesn't
bother me if the device is not able to distinguishe between valid and
invalid touches.

[Julie C.]

While waiting for an answer, I made a device by myself with a 555 IC Timer.
Works just perfect.

Thanks anyway.

[Julie C.]

While waiting for an answer, I made a device by myself with a 555 IC Timer.
Works just perfect.

Thanks anyway.

[news.kingsdown.swindon.sch.uk]

So could you post your schematics please :-)

Might well come in handy ......


"Julie C." <no-spanner@127.0.0.0> wrote in message
news:viHia.3300$945.9985@tor-nn1.netcom.ca...
> While waiting for an answer, I made a device by myself with a 555 IC
Timer.
> Works just perfect.
>
> Thanks anyway.
>

[news.kingsdown.swindon.sch.uk]

So could you post your schematics please :-)

Might well come in handy ......


"Julie C." <no-spanner@127.0.0.0> wrote in message
news:viHia.3300$945.9985@tor-nn1.netcom.ca...
> While waiting for an answer, I made a device by myself with a 555 IC
Timer.
> Works just perfect.
>
> Thanks anyway.
>

[Andy Smart]

Sorry for my newsgroup bad manners - previous post is from me, not an
anonymus newsgroup LOL

"news.kingsdown.swindon.sch.uk" <andy@postmaster.co.uk> wrote in message
news:b6jdgn$ssp$1@newsfeed.th.ifl.net...
> So could you post your schematics please :-)
>
> Might well come in handy ......
>
>
> "Julie C." <no-spanner@127.0.0.0> wrote in message
> news:viHia.3300$945.9985@tor-nn1.netcom.ca...
> > While waiting for an answer, I made a device by myself with a 555 IC
> Timer.
> > Works just perfect.
> >
> > Thanks anyway.
> >
>
>

[Andy Smart]

Sorry for my newsgroup bad manners - previous post is from me, not an
anonymus newsgroup LOL

"news.kingsdown.swindon.sch.uk" <andy@postmaster.co.uk> wrote in message
news:b6jdgn$ssp$1@newsfeed.th.ifl.net...
> So could you post your schematics please :-)
>
> Might well come in handy ......
>
>
> "Julie C." <no-spanner@127.0.0.0> wrote in message
> news:viHia.3300$945.9985@tor-nn1.netcom.ca...
> > While waiting for an answer, I made a device by myself with a 555 IC
> Timer.
> > Works just perfect.
> >
> > Thanks anyway.
> >
>
>

[Thom Cate]

"Julie C." <no-spanner@127.0.0.0> wrote in message news:<viHia.3300$945.9985@tor-nn1.netcom.ca>...
> While waiting for an answer, I made a device by myself with a 555 IC Timer.
> Works just perfect.

The 555 IC project is nice, but a bit overdone for training and
testing needs; an RC (resistance-capacitance) circuit should suffice,
as logic and timing are not required for this circuit. For those
looking for a simpler solution, try this:


- + |----[tip]---[LED]-----------|
[batt]---/ --| |----(gnd)
|---/\/\/\--[piezeo buzzer]--|


Ugly diagram, but I'm working with ASCII here. And I'm not including
actual values for the devices.

For those new to simple circuits, here's how this works. Power from
the battery is controlled by the switch. When the switch is on, and
the foil tip is not depressed, the LED is on, but the resistor
prevents the current from flowing through the buzzer. When the foil
tip is pressed in, the current can no longer flow through the LED, and
now must flow through the resistor/piezeo buzzer, which will sound as
long as the tip is pressed in.

You don't even need a circuit board for this thing, it can all be done
with wires, and (depending on your battery) slipped into a cigar tube
and strapped to your wrist--very, very low-tech, very very effective.

Cheers,

TC
--

[Thom Cate]

"Julie C." <no-spanner@127.0.0.0> wrote in message news:<viHia.3300$945.9985@tor-nn1.netcom.ca>...
> While waiting for an answer, I made a device by myself with a 555 IC Timer.
> Works just perfect.

The 555 IC project is nice, but a bit overdone for training and
testing needs; an RC (resistance-capacitance) circuit should suffice,
as logic and timing are not required for this circuit. For those
looking for a simpler solution, try this:


- + |----[tip]---[LED]-----------|
[batt]---/ --| |----(gnd)
|---/\/\/\--[piezeo buzzer]--|


Ugly diagram, but I'm working with ASCII here. And I'm not including
actual values for the devices.

For those new to simple circuits, here's how this works. Power from
the battery is controlled by the switch. When the switch is on, and
the foil tip is not depressed, the LED is on, but the resistor
prevents the current from flowing through the buzzer. When the foil
tip is pressed in, the current can no longer flow through the LED, and
now must flow through the resistor/piezeo buzzer, which will sound as
long as the tip is pressed in.

You don't even need a circuit board for this thing, it can all be done
with wires, and (depending on your battery) slipped into a cigar tube
and strapped to your wrist--very, very low-tech, very very effective.

Cheers,

TC
--

[Fencerbill]

In article <4c1bba3.0304040743.5bf8a8a1@posting.google.com> , tcate@zoo.uvm.edu
(Thom Cate) writes:

>The 555 IC project is nice, but a bit overdone for training and
>testing needs; an RC (resistance-capacitance) circuit should suffice,

I, for one, would like to see the 555 IC setup. It could be very helpful for
someone like me who tests dozens of reels and body/floor cords and who has to
do each one quickly..

You want to capture that fast intermittent (which also activates the machine)
and turn it into a longer buzz. I know schematics are difficult for putting in
messages but perhaps someone could talk through it. And please include the R
and C values and the IC pin numbers.

Bill Hall

[Fencerbill]

In article <4c1bba3.0304040743.5bf8a8a1@posting.google.com> , tcate@zoo.uvm.edu
(Thom Cate) writes:

>The 555 IC project is nice, but a bit overdone for training and
>testing needs; an RC (resistance-capacitance) circuit should suffice,

I, for one, would like to see the 555 IC setup. It could be very helpful for
someone like me who tests dozens of reels and body/floor cords and who has to
do each one quickly..

You want to capture that fast intermittent (which also activates the machine)
and turn it into a longer buzz. I know schematics are difficult for putting in
messages but perhaps someone could talk through it. And please include the R
and C values and the IC pin numbers.

Bill Hall

[Thom Cate]

fencerbill@aol.com (Fencerbill) wrote in message news:<20030404132326.18459.00000004@mb-cc.aol.com>...
> In article <4c1bba3.0304040743.5bf8a8a1@posting.google.com> , tcate@zoo.uvm.edu
> (Thom Cate) writes:
>
> >The 555 IC project is nice, but a bit overdone for training and
> >testing needs; an RC (resistance-capacitance) circuit should suffice,
>
> I, for one, would like to see the 555 IC setup. It could be very helpful for
> someone like me who tests dozens of reels and body/floor cords and who has to
> do each one quickly..

Well, now that's true! By "lengthening" the duration of the buzz you
can more easily detect smaller or incipient faults.

I got my 555 IC circuit from www.pointcontrol.com, which provides the
..pdf with diagram and pinouts near the bottom of the front page.
Point Control is also a good computer-based Tournament Managagement
software package, and is made available at a very reasonable price (We
use Fencing Time, but Point Control was a close second).

TC

[Thom Cate]

fencerbill@aol.com (Fencerbill) wrote in message news:<20030404132326.18459.00000004@mb-cc.aol.com>...
> In article <4c1bba3.0304040743.5bf8a8a1@posting.google.com> , tcate@zoo.uvm.edu
> (Thom Cate) writes:
>
> >The 555 IC project is nice, but a bit overdone for training and
> >testing needs; an RC (resistance-capacitance) circuit should suffice,
>
> I, for one, would like to see the 555 IC setup. It could be very helpful for
> someone like me who tests dozens of reels and body/floor cords and who has to
> do each one quickly..

Well, now that's true! By "lengthening" the duration of the buzz you
can more easily detect smaller or incipient faults.

I got my 555 IC circuit from www.pointcontrol.com, which provides the
..pdf with diagram and pinouts near the bottom of the front page.
Point Control is also a good computer-based Tournament Managagement
software package, and is made available at a very reasonable price (We
use Fencing Time, but Point Control was a close second).

TC