Subject:
|
Re: Touch Switch 2974
|
Newsgroups:
|
lugnet.robotics.rcx
|
Date:
|
Sun, 29 Jun 2003 12:29:56 GMT
|
Viewed:
|
5508 times
|
| |
|
|
> > indeed, the construction of this beast may be very different (e.g. metallic
> > contact, 0 resistance... and a lot of bounce almost completely avoided with
> > conductive rubber)
>
> I was fortunate enough to find one of these on BrickLink and
> it just came in today. It turns out the resistance is 2.2K and I
> suspect the contacts are metal since the resistance doesn't seem
> to vary with pressure. It's an open circuit when the actuator
> is not pressed.
Did you try to test contact bounce ? since there is a rather high value
resistor, perhaps Lego added a small capacitor too to debounce it?
Philo
www.philohome.com
|
|
Message has 1 Reply:
 | | Re: Touch Switch 2974
|
| "Philippe Hurbain" <philohome@free.fr> wrote in message news:HH8tDw.B8I@lugnet.com... (...) metallic (...) with (...) No capacitor as far as I can tell. I looked at it on the scope and the transitions were no different than if I just used a 2.2K (...) (23 years ago, 1-Jul-03, to lugnet.robotics.rcx)
|
Message is in Reply To:
| | Touch Switch 2974
|
| (...) metallic (...) with (...) I was fortunate enough to find one of these on BrickLink and it just came in today. It turns out the resistance is 2.2K and I suspect the contacts are metal since the resistance doesn't seem to vary with pressure. (...) (23 years ago, 28-Jun-03, to lugnet.robotics.rcx)
|
3 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
