2V025 08 PDF

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I also tried some cheap all-in-one valves but found they were too slow for water drop photography. I normally use 12v and these do not get much use. I may buy the 12V coils later but for now I find the Chinese copies to be very good. I now use 24v versions of the China valve shown below. I find the AirTac 2V valves have a similar performance to the Shako valves. The AirTak valves generate a lot more crud than the brass valves though. See the photo below.

The Airtacs are much cheaper than the Shako valves but require more maintainance. No brand, made in China valve.

This was sold as a Shako clone and is currently my preferred valve. I can get fairly small drops and the drops are very reliable. The price seems to be the same. I tried a few all-in-one valves and found these too slow. Only tried low voltages ones though. The ones here are 12v and 6v.

Connecting To separate the plastic part from the metal part, undo the large screw and pull away. Inside the plastic part you will find two connectors, one is positive and the other is negative. The ones that do not have labels tend to have LEDs and all the valves that I have, that have an LED, the positive wire goes to the resistor.

If you get the wires the wrong way a round, the valve will still work but the LED will not light. Cleaning the valves The below video shows how to dismantle and clean the Shako valve and this one shows a neglected Airtac 2V not as neglected as the one in the photo below the video though.

The Airtacs are pretty good valves but they need more maintenance than the brass valves. This is great when you need extra long leads.

Now, I buy cheap audio cables and cut one of the ends off. Nozzles I have tried brass nozzles and plastic nozzles. I find the brass ones give better results with more consistent drops. The plastic nozzles tend to be unreliable, sometimes the drops are good, sometimes they are not.

The smallest brass nozzles I have found are 6mm. These gives good results but can sometimes be too large. To make the orifice smaller I use a small piece of tube and a short length of drinking straw.

Inside the straw there is another small piece of PVC tube. I am still experimenting with different tubes and pipes. Make sure you get an air tight seal when attaching the nozzles to the valves. If air can get in water will slowly drip out. To make a seal you should use plumbers tape. This is a thin non adhesive tape the white tape in the photo below. In a pinch you can use electrical tape the black tape in the photo below but this can leave an adhesive residue which is difficult to remove.

I cut the electrical tape in to thin pieces before using it. I have just a question: can you gently tell me exactly whic model have you used for the dropcontroller? Can you give me the model and where you have buyed the valves and the nozzles? However, using the keypad and small LCD is not the best user experience. Later I added the Bluetooth version and this is the one I use now. Shortly after making the Bluetooth version I was asked for a PC version but I personally seldom use it.

I find the Bluetooth version the easiest and most convenient to use. The nice thing about the PC version is that any model can be used just by changing the firmware. If you are starting to make your own and you have an Android device I would suggest the BT version. I bought the valves and nozzles from Taobao. Taobao is like a Chinese ebay. All the valves are available from ebay though.

Shako can usually be bought from local suppliers. Not sure about the other brands. I take your advice to use the version bluethoot for its convenience compared to the small display and keypad. I agree on the purchase from local suppliers, but however you wondering if you can suggest a precise model of the valve and its nozzle to avoid mistakes in the purchase.

Thanks again for your patience and good day. Martyn on at said: Either the Shako or the AirTak valves see above will give you good results. The Shako seems to be the preferred module by most users but can be fairly expensive. You will gets lots of hits and see many different models.

It is also worth while trying cheaper no name valves. My preferred valve is the no name Chinese model photo above. These were a lot cheaper than the Shako and the AirTak.

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