Comments on: Coffee and Cream http://www.photosbykev.com/wordpress Wildlife and Nature Photography by Kevin Lewis Wed, 08 Feb 2012 21:11:27 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: photosbykev http://www.photosbykev.com/wordpress/photography/keris-photography/coffee-and-cream/#comment-5859 photosbykev Sun, 31 Oct 2010 22:09:12 +0000 http://www.photosbykev.com/wordpress/?page_id=898#comment-5859 Hi, the arduino microprocessor is ideal for timing projects, I started using an arduino for my work and then went on to buy the purpose made modules. The solenoid is basically an electro magnet operating a plunger and does generate a significant back emf so you will need to put a blocking diode across the solenoid contacts to reduce this voltage which would damage the arduino. Using opto isolators is a good start but they may need to be protected. When I using the arduino I started using a simple solide state relay to trigger the solenoid, it had a fast response time for basic flash work. Don't forget to protect the ardunio from the voltage spikes that some flashguns also produce, another place for an opto isolator Hi,

the arduino microprocessor is ideal for timing projects, I started using an arduino for my work and then went on to buy the purpose made modules. The solenoid is basically an electro magnet operating a plunger and does generate a significant back emf so you will need to put a blocking diode across the solenoid contacts to reduce this voltage which would damage the arduino. Using opto isolators is a good start but they may need to be protected. When I using the arduino I started using a simple solide state relay to trigger the solenoid, it had a fast response time for basic flash work.

Don’t forget to protect the ardunio from the voltage spikes that some flashguns also produce, another place for an opto isolator

]]> By: Bambi http://www.photosbykev.com/wordpress/photography/keris-photography/coffee-and-cream/#comment-5855 Bambi Sun, 31 Oct 2010 21:35:28 +0000 http://www.photosbykev.com/wordpress/?page_id=898#comment-5855 Hi Kev, been following your site for a while now and have decided to build myself an all in one controller box, which will fire off solenoids, flashes etc, based around an Adruino board, and the work of a very clever lady called Louise. Do you use something like an Opto Isolator in between your solenoid and your 'small computer'? Hi Kev,
been following your site for a while now and have decided to build myself an all in one controller box, which will fire off solenoids, flashes etc, based around an Adruino board, and the work of a very clever lady called Louise. Do you use something like an Opto Isolator in between your solenoid and your ‘small computer’?

]]> By: photosbykev http://www.photosbykev.com/wordpress/photography/keris-photography/coffee-and-cream/#comment-2375 photosbykev Mon, 25 Jan 2010 07:17:09 +0000 http://www.photosbykev.com/wordpress/?page_id=898#comment-2375 I use normal fish tank air pump tubing for my feed from the syphon and on the output of the solenoid valves I have a range of small pnuematic fittings typically from SMC, internal bores are anything between 2mm-5mm depending on the effect I want I use normal fish tank air pump tubing for my feed from the syphon and on the output of the solenoid valves I have a range of small pnuematic fittings typically from SMC, internal bores are anything between 2mm-5mm depending on the effect I want

]]> By: Jack McGrane http://www.photosbykev.com/wordpress/photography/keris-photography/coffee-and-cream/#comment-2374 Jack McGrane Mon, 25 Jan 2010 02:32:23 +0000 http://www.photosbykev.com/wordpress/?page_id=898#comment-2374 Hi Kev, I have been following your shots on Flickr and have ordered a Stop Shot unit to try my hand at it, I have made a mariotte syphon but can't find a suitable nozzle - what do you use and what diameter is best - thanks for any help regards Jack Hi Kev,
I have been following your shots on Flickr and have ordered a Stop Shot unit to try my hand at it, I have made a mariotte syphon but can’t find a suitable nozzle – what do you use and what diameter is best – thanks for any help
regards

Jack

]]> By: photosbykev http://www.photosbykev.com/wordpress/photography/keris-photography/coffee-and-cream/#comment-2190 photosbykev Tue, 05 Jan 2010 07:12:29 +0000 http://www.photosbykev.com/wordpress/?page_id=898#comment-2190 I use a 24vDC valve from Connexion Developmetns in the UK, part number PU220AR. Alternatively you can buy a solenoid valve from Cognisys who make the Stopshot timing module. I use a 24vDC valve from Connexion Developmetns in the UK, part number PU220AR. Alternatively you can buy a solenoid valve from Cognisys who make the Stopshot timing module.

]]> By: Ernie http://www.photosbykev.com/wordpress/photography/keris-photography/coffee-and-cream/#comment-2188 Ernie Tue, 05 Jan 2010 04:57:47 +0000 http://www.photosbykev.com/wordpress/?page_id=898#comment-2188 Awesome shots! I have done some drop photography with moderate success. I am in the next few days going to create a marriotte siphon and work on some collision shots. I would love to get a solenoid valve set up but I have no idea where I would find one. Can you help me with that? I have an IR trigger set up already, but to be able to control the drop timing would be outstanding! I look forward to your advice, as well as more of your great photos! Ernie Awesome shots! I have done some drop photography with moderate success. I am in the next few days going to create a marriotte siphon and work on some collision shots. I would love to get a solenoid valve set up but I have no idea where I would find one. Can you help me with that?

I have an IR trigger set up already, but to be able to control the drop timing would be outstanding!

I look forward to your advice, as well as more of your great photos!

Ernie

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