"Gennette, Bruce" wrote:
>=20
> Could you use a normal micro switch and a pendulum (weighted bar).
> 2 at 90=B0 or 180=B0 in a clever design should cover most situations.
> Or 3 at 120=B0 spacing if your item could fall in any direction.
>=20
> I have also seen these as normally open switches using a short piece of
> copper pipe (a ring really) as one contact and a ball bearing hanging o=
n a
> wire as the second contact.  Length and stiffness of the wire sets the
> sensitivity.
>=20
> Bye.


If you are going to roll your own then how about a reed switch and a
magnet?=20
Dangle a bar magnet over the reed switch or slide a ring magnet along
the reed switch maybe? Low current only, of course.


-- Rich



> -----Original Message-----
> From: Peter Grey [mailto:martech@OZEMAIL.COM.AU]
> Sent: Thursday, 28 June 2001 11:38
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: Tilt switch replacement
>=20
> At 09:15 PM 6/27/2001 -0400, you wrote:
>=20
> Ah Ha, now I understand the reason for suggesting the temp switch! I am
> using the tip over switch to monitor a portable application but will no=
t
> need UL approval. Sorry I cannot be a little more specific but there ar=
e
> secrecy provisions in place.
>=20
> Thanks,
>=20
> Peter
> >At 10:00 AM 6/28/01 +1000, you wrote:
> >>How about a bimetallic temp switch. Farnell or RS stock such devices =
???
> >
> >Hmmmm I think he means *angular* degrees.
> >
> >Automobile trunk (boot?) lights are moving to environmentally safer
> switches
> >that use a rolling ball and contacts. No manufacturer's names handy, s=
orry.
> >
> >If this requires UL/CSA (eg. for deactivation of heaters if they are t=
ipped
> >over) there are probably another set of options.
> >
> >Best regards,
> >
> >=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D=
-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=
=3D-=3D
> -=3D
> >Spehro Pefhany --"it's the network..."            "The Journey is the
> reward"
> >speff@interlog.com             Info for manufacturers:
> http://www.trexon.com
> >Embedded software/hardware/analog  Info for designers:
> http://www.speff.com
> >Contributions invited->The AVR-gcc FAQ is at:
> http://www.bluecollarlinux.com
> >=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D=
-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=
=3D-=3D
> -=3D
> >
> >--
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> >(like ads or off topics) for you. See http://www.piclist.com/#topics
> >
>=20
> --
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>=20
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