NEWB - Leicina connection to microprocessor?

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Simon Lucas
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NEWB - Leicina connection to microprocessor?

Post by Simon Lucas » Sat Jun 08, 2013 2:52 am

Hi. I'm looking for someone who can advise me on modding a Leicina Special, please.

I first wish to connect my Leicina to a microprocessor for shutter control. I have seen this discussed before here in the context of self-made intervalometers, but that was back in 2006.

Can anyone advise me on the kind of switch (and even a circuit design) I should use, please? I'm looking at using a MOSFET but have no idea if this is the best solution or how to specify it and the circuit to match the camera's shutter circuit. I have the basic camera circuit diagram that came with the Leicina's ST-1 manual.

I know the camera shutter connection pins and have tested it works by shorting across them. I have already designed a circuit that uses an opto-isolator switch but this for some reason this does not fire the shutter. My knowledge of electronics is very partial but I can make breadboards from other's designs and code the Ardiuno.

It's quite specialised as it need some knowledge of the camera as well as electronics.

Simon

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Simon Lucas
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Real name: Simon Lucas

Re: NEWB - Leicina connection to microprocessor?

Post by Simon Lucas » Sun Jun 09, 2013 1:30 pm

More info. The shutter circuit current is 38mA in single frame and 90mA in continuous modes. I will try and find out what kind of switching component will work. When I get a working design I will post it to the forum.

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Simon Lucas
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Re: NEWB - Leicina connection to microprocessor?

Post by Simon Lucas » Wed Jun 12, 2013 1:35 am

[UPDATE]

First steps towards Leicina Special modification:

I have the circuit now working with a SPST Reed-relay switch (an appropriately out-of-date 1930s technology). I will post a circuit diagram with the specs. as soon as I learn to draw.

You can't see it, but in theory, I was getting single shutter activation every 100ms in my first run through pictured here:

Image

nikonr10
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Re: NEWB - Leicina connection to microprocessor?

Post by nikonr10 » Tue Jun 05, 2018 12:55 pm

Hi I know this is a old post .

Looking at the Leicina ST 1 manual has any one here made a breadboard ? any help here please .

https://drive.google.com/file/d/0BxR_SV ... kzc28/view

My knowledge of electronics is very partial but I can make breadboards from other's designs and code the Ardiuno.

It's quite specialised as it need some knowledge of the camera as well as electronics.

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