====== Servo valves ======


These are used to enable diverse techniques in liquid handling. This valve technique uses a disposable stop cock valve and a standard servo motor. Now this works with these cool polypropylene stopcock valves 

Steps in putting a valve together:


{{:bdev:image-20191023-125629.png?200|}}

Steps in putting a valve together:

{{:bdev:image-20191023-135128.png?200| }} First start with the smallsyringe_valvesupportmodule_plate() {{ :bdev:smallsyringe_valvesupportmodule_plate.stl}}

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{{:bdev:image-20191023-135518.png?200| }} Many servos like this are available on Amazon, you can also find them at your local dump {{:bdev:image-20191023-131840.png?200 }}

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{{:bdev:image-20200509-013401.png?200| }} Connect the stop cock connector onto the servo horn {{ :bdev:valveconnectpart.stl}}

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{{:bdev:image-20191023-140555.png?200| }} Connect the valvemountplate_screwattach_smallersyringe_vertical_attach() part is used to hold the stop cock in place as the servo horn turns {{ :bdev:valvemountplate_screwattach_smallersyringe_vertical_attach.stl}}

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{{:bdev:image-20191023-141028.png?200| }} Many servos like this are available on Amazon, you can also find them at your local dump {{:bdev:image-20200509-013147.png?200 }}

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{{:bdev:image-20191023-142756.png?200| }} Secure the valve so only the handle moves when the servo horn turns {{ :bdev:valvemountplate_screwattach_smallersyringe.stl}}


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For an 8 channel system, use 8 valves (1 valve per syringe). Here is an image of a plate that holds 4 valves. With a RaspberryPi (not showing the Pi-Hat servo shield). 

{{:bdev:image-20191029-024048.png?200| }} smallsyringe_valvesupportmodule_plate_4valve(){{ :bdev:smallsyringe_valvesupportmodule_plate_4valve.stl}}

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{{:bdev:image-20191029-021936.png?200| }} Raspi2_bottom_lego_female() {{ :bdev:raspi2_bottom_lego_female.stl}}