Confocal Microscopy List

Re: stuck iris on a BioRad 1024

Classic

List

Threaded

6 messages Options

Allan Kachelmeier

Re: stuck iris on a BioRad 1024

Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Hi,

We have an iris on the 488 on a BioRad 1024 which is stuck, and
doesn't open or close with the slider. The service quotation is to
replace the PMT assembly. I'm wondering whether anyone has experience
to share with a stuck iris, and whether particular parts, as opposed
to the whole assembly, might be available. Thanks.

Allan Kachelmeier
Manager, confocal microscopy core
Oregon Hearing Research Center
OHSU

Nuno Moreno

Re: stuck iris on a BioRad 1024

Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Hi

As far as I know the mrc1024 uses a futaba iris which is a brand for radio model
cars. Try to have a look to the Part No. and ask them directly.
http://www.futaba.com/

Regards,
NM

Quoting Allan Kachelmeier <[hidden email]>:

> Search the CONFOCAL archive at
> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>
> Hi,
>
> We have an iris on the 488 on a BioRad 1024 which is stuck, and
> doesn't open or close with the slider. The service quotation is to
> replace the PMT assembly. I'm wondering whether anyone has experience
> to share with a stuck iris, and whether particular parts, as opposed
> to the whole assembly, might be available. Thanks.
>
> Allan Kachelmeier
> Manager, confocal microscopy core
> Oregon Hearing Research Center
> OHSU
>

Guy Cox

Re: stuck iris on a BioRad 1024

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal Re: stuck iris on a BioRad 1024

Nuno,

What on earth does a radio-controlled model car need

an iris for? I'm intrigued.

Guy

Optical Imaging Techniques in Cell Biology
by Guy Cox CRC Press / Taylor & Francis

http://www.guycox.com/optical.htm
______________________________________________
Associate Professor Guy Cox, MA, DPhil(Oxon)
Electron Microscope Unit, Madsen Building F09,
University of Sydney, NSW 2006
______________________________________________
Phone +61 2 9351 3176 Fax +61 2 9351 7682
Mobile 0413 281 861
______________________________________________
http://www.guycox.net

From: Confocal Microscopy List on behalf of Nuno Moreno
Sent: Sat 07/12/15 6:54 AM
To: [hidden email]
Subject: Re: stuck iris on a BioRad 1024

Dan Focht

Re: stuck iris on a BioRad 1024

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal Guy

I cannot confirm the use of the Futaba motor on the 1024 but I can comment on the attributes of that type of proportional control.

The hobby industry uses a unique form of position control based on the phase change of a 50Hz signal where phase shifts between 5ms - 17.5ms within that 20ms period of the signal translate to proportional rotation of a lever. The interface circuitry is easy to build. When the lever moves it is reasonably repeatable, smooth and has plenty of torque to move an iris. It provides an inexpensive means of analog position control. It is not optimal for precision optical positioning but great for proof of concept. I was not aware that this type of control was used on a 1024 but I will investigate the next time I have an opportunity. I am too curious for my own good!

Dan

On Dec 14, 2007, at 5:33 PM, Guy Cox wrote:

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Nuno,

What on earth does a radio-controlled model car need

an iris for? I'm intrigued.

Guy

Optical Imaging Techniques in Cell Biology
by Guy Cox CRC Press / Taylor & Francis

From: Confocal Microscopy List on behalf of Nuno Moreno
Sent: Sat 07/12/15 6:54 AM
To: [hidden email]
Subject: Re: stuck iris on a BioRad 1024

Nuno Moreno

Re: stuck iris on a BioRad 1024

In reply to this post by Guy Cox

Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Hi,

They also make miniature machinery. I also made myself that question :)

Regards,
NM

Guy Cox wrote:

> Search the CONFOCAL archive at
> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
> Nuno,
>
> What on earth does a radio-controlled model car need
> an iris for? I'm intrigued.
>
>
> Guy
>
> Optical Imaging Techniques in Cell Biology
> by Guy Cox CRC Press / Taylor & Francis
> http://www.guycox.com/optical.htm
> ______________________________________________
> Associate Professor Guy Cox, MA, DPhil(Oxon)
> Electron Microscope Unit, Madsen Building F09,
> University of Sydney, NSW 2006
> ______________________________________________
> Phone +61 2 9351 3176 Fax +61 2 9351 7682
> Mobile 0413 281 861
> ______________________________________________
> http://www.guycox.net
> <https://www.mcws.usyd.edu.au/exchweb/bin/redir.asp?URL=https://www.mcws.usyd.edu.au/exchweb/bin/redir.asp?URL=http://www.guycox.net>
>
> ------------------------------------------------------------------------
> *From:* Confocal Microscopy List on behalf of Nuno Moreno
> *Sent:* Sat 07/12/15 6:54 AM
> *To:* [hidden email]
> *Subject:* Re: stuck iris on a BioRad 1024
>
> Search the CONFOCAL archive at
> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>
> Hi
>
> As far as I know the mrc1024 uses a futaba iris which is a brand for
> radio model
> cars. Try to have a look to the Part No. and ask them directly.
> http://www.futaba.com/
>
> Regards,
> NM
>
> Quoting Allan Kachelmeier <[hidden email]>:
>
> > Search the CONFOCAL archive at
> > http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
> >
> > Hi,
> >
> > We have an iris on the 488 on a BioRad 1024 which is stuck, and
> > doesn't open or close with the slider. The service quotation is to
> > replace the PMT assembly. I'm wondering whether anyone has experience
> > to share with a stuck iris, and whether particular parts, as opposed
> > to the whole assembly, might be available. Thanks.
> >
> > Allan Kachelmeier
> > Manager, confocal microscopy core
> > Oregon Hearing Research Center
> > OHSU
> >
>

--
Nuno Moreno
Cell Imaging Unit
Instituto Gulbenkian de Ciência
http://uic.igc.gulbekian.pt
http://www.igc.gulbekian.pt
phone +351 214464606
fax +351 214407970

Allan Kachelmeier

Re: stuck iris on a BioRad 1024

Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Thanks for the suggestions on how to get a stuck iris unstuck. It
turned out that Simon's suggestion of moving the actuator arm back and
forth a few times before turning on the machine worked. BTW the
actuator mechanism, what opens and closes the iris, perhaps not the
iris itself, is made by Futaba.

Regards,

Allan

Allan Kachelmeier
Manager, confocal microscopy core
Oregon Hearing Research Center
OHSU

On 12/17/07, Nuno Moreno <[hidden email]> wrote:

> Search the CONFOCAL archive at
> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>
> Hi,
>
> They also make miniature machinery. I also made myself that question :)
>
> Regards,
> NM
>
> Guy Cox wrote:
> > Search the CONFOCAL archive at
> > http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
> > Nuno,
> >
> > What on earth does a radio-controlled model car need
> > an iris for? I'm intrigued.
> >
> >
> > Guy
> >
> > Optical Imaging Techniques in Cell Biology
> > by Guy Cox CRC Press / Taylor & Francis
> > http://www.guycox.com/optical.htm
> > ______________________________________________
> > Associate Professor Guy Cox, MA, DPhil(Oxon)
> > Electron Microscope Unit, Madsen Building F09,
> > University of Sydney, NSW 2006
> > ______________________________________________
> > Phone +61 2 9351 3176 Fax +61 2 9351 7682
> > Mobile 0413 281 861
> > ______________________________________________
> > http://www.guycox.net
> > <https://www.mcws.usyd.edu.au/exchweb/bin/redir.asp?URL=https://www.mcws.usyd.edu.au/exchweb/bin/redir.asp?URL=http://www.guycox.net>
> >
> > ------------------------------------------------------------------------
> > *From:* Confocal Microscopy List on behalf of Nuno Moreno
> > *Sent:* Sat 07/12/15 6:54 AM
> > *To:* [hidden email]
> > *Subject:* Re: stuck iris on a BioRad 1024
> >
> > Search the CONFOCAL archive at
> > http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
> >
> > Hi
> >
> > As far as I know the mrc1024 uses a futaba iris which is a brand for
> > radio model
> > cars. Try to have a look to the Part No. and ask them directly.
> > http://www.futaba.com/
> >
> > Regards,
> > NM
> >
> > Quoting Allan Kachelmeier <[hidden email]>:
> >
> > > Search the CONFOCAL archive at
> > > http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
> > >
> > > Hi,
> > >
> > > We have an iris on the 488 on a BioRad 1024 which is stuck, and
> > > doesn't open or close with the slider. The service quotation is to
> > > replace the PMT assembly. I'm wondering whether anyone has experience
> > > to share with a stuck iris, and whether particular parts, as opposed
> > > to the whole assembly, might be available. Thanks.
> > >
> > > Allan Kachelmeier
> > > Manager, confocal microscopy core
> > > Oregon Hearing Research Center
> > > OHSU
> > >
> >
>
> --
> Nuno Moreno
> Cell Imaging Unit
> Instituto Gulbenkian de Ciência
> http://uic.igc.gulbekian.pt
> http://www.igc.gulbekian.pt
> phone +351 214464606
> fax +351 214407970
>