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Where To Get Phot Cells


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#1 rsclio

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Posted 26 October 2007 - 09:21 PM

Hi guys have been reading on this forum for a while lots of good stuff
Am trying to set up timing at home and need help finding photo cells around melbourne
Iv'e got everything else hooked up and working just need photo cells to trigger
Can anyone point me in the right direction
Thanks
Cheers
Mike

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#2 schuey19

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Posted 26 October 2007 - 09:34 PM

Darlington Phototransistors are what you're after. Got mine from Dick Smith.

#3 gazza

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Posted 26 October 2007 - 09:43 PM

View Postrsclio, on Oct 26 2007, 09:21 PM, said:

Hi guys have been reading on this forum for a while lots of good stuff
Am trying to set up timing at home and need help finding photo cells around melbourne
Iv'e got everything else hooked up and working just need photo cells to trigger
Can anyone point me in the right direction
Thanks
Photo cells are ok ..... i used them for years untill all of a sudden they started to play up,so i switched over to the Z 1951 Infrared Darlington Transistor both are available from Dick Smiths and J Car
Quickly read this post before it is deleted or i turn grey again

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#4 rsclio

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Posted 27 October 2007 - 06:38 AM

Thanks for the help guys
Do I wire these up in the same way?
I'm using slotrace manager
Thanks again
Cheers
Mike

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#5 gazza

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Posted 27 October 2007 - 07:26 AM

View Postrsclio, on Oct 27 2007, 06:38 AM, said:

Thanks for the help guys
Do I wire these up in the same way?
I'm using slotrace manager
Thanks again
Wire them up the same way using the 25 pin ....... you don't need a huge light source to power them up as well, I just run a $1 12 volt globe (Dick again) over the top on the rally track and three of them,from the same power supply (old phone chargers etc ) on the three lane road track.

If you want a copy of SRM 240b just pm me your email and i'll send it to you
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#6 Rob

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Posted 27 October 2007 - 08:25 AM

How critical is the matching of the transistors? It seems to be a lot of effort to get them matched up from what I quickly read in the instructions on the slotrace site? Im a total numnuts when it comes to electronics!
Regards
Rob

#7 rsclio

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Posted 28 October 2007 - 08:03 AM

Thank for the help guys now up and running
I actually used a couple of ZD1950 @$1 ea
I splashed out $9 on a LED bar that has 5 LEDs on it made up a little gantry over the track - once finished off will look great
Rob,
I got a handfull of resistors to do all the checking that they said on the slotrace site but in the end it was not really required with my set up as the switching was "strong" enough without using resistor to put in right area.
Iwire then ZD1950's up joined one output which grounded to pin 18 on parallel port then other out put on sensors to pins 10 &12 - Just on the diagramm of the plug on the slotrace webite is of the socket on the PC so plug is mirror image of this
I drilled 5mm hole in track poked the ZD1950's into themprotruding about 0.5mm hot melt glued into place put a meter on the plug testing changed in resistance when a car was over them, plugged in and set it up accoring to program which was very easy and was up and running
Cheers
Mike

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#8 Yngwie

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Posted 12 August 2009 - 08:46 PM

I am in need of 3 Darlington Transistor Z1951 but everyone "electronic" DSE I have asked are out of stock. For those in SYdney, can you point me to an electronically focused Dick smith? I have tried Gore HIll and Castle Hill and both have nothing and are reticent to order them in as they say they do not sell enough off them!

Regards

#9 Ontheflipside

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Posted 12 August 2009 - 09:20 PM

View PostYngwie, on Aug 12 2009, 08:46 PM, said:

I am in need of 3 Darlington Transistor Z1951 but everyone "electronic" DSE I have asked are out of stock. For those in SYdney, can you point me to an electronically focused Dick smith? I have tried Gore HIll and Castle Hill and both have nothing and are reticent to order them in as they say they do not sell enough off them!

Regards
Try them at :
Chullora

2 Davidson Street
Greenacre NSW 2190
Tel: (02) 9642 9355

Think this is their distribution centre and store

Edited by Ontheflipside, 12 August 2009 - 09:22 PM.

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#10 Yngwie

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Posted 12 August 2009 - 10:05 PM

View PostOntheflipside, on Aug 12 2009, 09:20 PM, said:

View PostYngwie, on Aug 12 2009, 08:46 PM, said:

I am in need of 3 Darlington Transistor Z1951 but everyone "electronic" DSE I have asked are out of stock. For those in SYdney, can you point me to an electronically focused Dick smith? I have tried Gore HIll and Castle Hill and both have nothing and are reticent to order them in as they say they do not sell enough off them!

Regards
Try them at :
Chullora

2 Davidson Street
Greenacre NSW 2190
Tel: (02) 9642 9355

Think this is their distribution centre and store

Thanks Mel. Will call them tomorrow!

#11 dangermouse

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Posted 12 August 2009 - 10:11 PM

I picked up some spare ones at my local DSE they had some left - - if you want I can see if they have any still in stock

cheers
DM

#12 kalbfellp

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Posted 12 August 2009 - 10:45 PM

Check out the DSE online and then check avaiability.

#13 espsix

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Posted 13 August 2009 - 05:59 AM

View PostYngwie, on Aug 12 2009, 08:46 PM, said:

I am in need of 3 Darlington Transistor Z1951 but everyone "electronic" DSE I have asked are out of stock. For those in SYdney, can you point me to an electronically focused Dick smith? I have tried Gore HIll and Castle Hill and both have nothing and are reticent to order them in as they say they do not sell enough off them!

Regards
Let me know how you go, but you can get them to order them in, i've just ordered 40, after clearing out the local DS. :rolleyes:

#14 gzminiz

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Posted 01 November 2009 - 01:03 PM

3 dick smiths and nothing. Jaycar has a 1950 but it is 5mm, would there be a problem if some of it is covered?

Edited by gzminiz, 01 November 2009 - 01:24 PM.


#15 dangermouse

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Posted 01 November 2009 - 01:14 PM

I found the DSE ones work a lot better than the Jaycar ones... though that may depend on how you mount them. I put the DSE ones in the slot and they work fine I couldn't get the Jaycar ones to work reliably in the slot they needed to be beside the slot. Maybe their light sensitivity wasn't as good as the DS ones

cheers
DM

#16 kalbfellp

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Posted 01 November 2009 - 03:44 PM

The jaycar ones are differt frequency, the DSE ones are the go. Best to phone around,I am about to place an on line order as all the shops down here have changed to Appliance shops! No service and not interested.

#17 Obsidith

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Posted 01 November 2009 - 04:40 PM

when you call get them to check the self for them as 3 stores told me they had them to drive 30 plus mins and they didnt
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#18 schuey19

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Posted 01 November 2009 - 07:24 PM

View Postkalbfellp, on Nov 1 2009, 04:44 PM, said:

The jaycar ones are differt frequency, the DSE ones are the go. Best to phone around,I am about to place an on line order as all the shops down here have changed to Appliance shops! No service and not interested.

That's the way all DSE stores are going, with the revamp. Will no longer be stocking components period, even from online.

#19 gzminiz

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Posted 01 November 2009 - 07:35 PM

What wave are dse. The jaycars led are 940nm. Trying to find a matching transistor is proving hard

Edited by gzminiz, 01 November 2009 - 07:45 PM.


#20 kalbfellp

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Posted 01 November 2009 - 10:22 PM

The Jaycar IR transmitters 5mm will work with the DSE Photo transistor 1951. But is no good with the Jaycar equivilent, the DSE Z1951.
The DSE ones are by far the best to get. Check the online stock for a store near you and then go and make them check. I did and found that they had some "out the back somewhere" weren't interested so I asked the manager and he made someone look!





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