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Flow sensor and 3 axis interface pcb

PostPosted: Mon Jun 03, 2013 12:52 am
by diegocim
I hope someone could help me with that, because I can't find the answer in the forum.
Can I use this flow meter ( http://www.amazon.com/gp/product/B00ATN ... UTF8&psc=1 ) or this one (http://www.lightobject.com/Water-flow-S ... -P541.aspx ) in the 3 Axis Laser Interface PCB?
I see in the users guide that Bart mentions an advanced water flow control by using the 3 ports on the water loop conector , but I can't figure it out how to connect the sensor and why it is always giving me normally closed contact.

Thanks in advance

Re: Flow sensor and 3 axis interface pcb

PostPosted: Tue Jun 04, 2013 12:25 pm
by bdring
Those sensors give one or more pulses per revolution. The do not output a no/no-go contact for flow so they cannot be used independently on a simple PCB. I used on for a while on my original laser, but I used a microprocessor to read the pulses.

http://www.buildlog.net/cnc_laser/build ... l#LogStart

It is something an Arduino could easily do.

A switch like this would be a lot simpler.

http://www.lightobject.com/Water-flow-p ... -P815.aspx

WaterSensor_500 (1).jpg

Re: Flow sensor and 3 axis interface pcb

PostPosted: Wed Jun 12, 2013 1:59 pm
by diegocim
Thanks Bart for your reply,
I was figuring out this answer when your wrote it. I thought easier using a simple switch like you said. I've got this one on amazon and it works pretty good.
http://www.amazon.com/gp/aw/d/B00AKVEGT ... -2&pi=SL75