[ELECTRON] Commissioning Help!!

[Natalie Duncan]

Hi Gordon,

Here are the basic components Im looking for;

A pulse sensor that will read a forefinger pulse. I am currently using this one ( http://pulsesensor.com/) , I could also build my own using an IR and a receiver, or ty another pulse reading sensor with analog output. If my own IR is made, residual light will probably be a concern.

The sensor will activate a submersible pump, preferably at 12v.  We are not moving a substantial amount of fluid… probably about a pint.  ( I am currently not using a submersible pump)

When a person places their finger on the sensor it will start the pump, the pump will then prime and liquid will begin to flow along a tube about 3-4 feet in length, velocity is not a concern as of now, the fluid will not be drawn very high, perhaps about a foot out of the receptacle.

The fluid will continue to pump until the finger is removed. Once the sensor recognizes that the finger is removed the pump will stop, but then the tricky part is having all the liquid drawn back into the receptacle.

Separately a 24/rpm rocker will need to be fabricated to sit inside the receptacle or outside of it to continually "rock" the liquid to prevent it from coagulating but I could certainly do this on my own. My main concern right now is getting the sensor working with the pump and the liquid draining from the tube until the next pule activates it.

Hope this clarifies.

I would really appreciate working on this project with someone with a bit more expertise than myself. All my electronics knowledge to this point is self taught. So while I am capable of following a schematic I am not sure how to devise my own circuits.



On 2013-12-18, at 9:47 PM, Gordon JC Pearce wrote:

> On Tue, Dec 17, 2013 at 09:37:17PM +0000, Natalie Duncan wrote:
>> Hey there,
>> 
>> i am looking for someone who would be interested in working on a circuit with me (not completely solo) for compensation… I currently have the majority of the piece working with Arduino but am very interested in moving this to an analog form.  
>> 
>> The piece will essentially be a pulse sensor activating a self priming pump. However once the sensor is no longer activated all liquids remaining in the "tube" will need to drain back into the original receptacle.
> 
> Have you got an idea of how the pump and valves will work?
> 
> What exactly do you mean by "pulse sensor"?
> 
> -- 
> Gordonjcp MM0YEQ
> 
> 
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