[ELECTRON] Commissioning Help!!

Wed Dec 18 23:11:32 GMT 2013

you could possibly use some 555 timers if you wanted to go analogue. you
can find  sample circuits books on sale for a  quid. and you can get 555
for pennies

On 18 December 2013 22:50, Natalie Duncan <06duncan at gmail.com> wrote:

> Thanks so much Grant. I have the sensor currently working with the
> Arduino, but reaaaallly wanted to move towards analog. I had not though of
> a solenoid water valve for return!! thats a fantastic idea.  I would really
> appreciate programming help on the return (I will send you the current
> program, stringing together codes is not something I have done more than
> once) if I am restricted to Arduino. Thanks again.
>
> Natalie
>
>
> On 2013-12-18, at 10:22 PM, Grant Gibson wrote:
>
> > Hi Natalie
> >
> > Sorry to jump in to the middle of a conversation here, but just a few
> > thoughts:
> >
> > The pulse sensor you're planning to use is designed for Arduino, so
> basing
> > the project around an Arduino board would probably be a good way to go.
> >
> > If you're going down the Arduino route, you could build the whole thing
> > quite easily without any 'real' electronics work - i.e. no raw
> components,
> > no soldering, and just some plug in wiring.
> >
> > My idea is to use a simple relay board - like the Sainsmart 2 channel
> relay
> > which would act as a simple on off switch for other devices (which
> > could be either
> > 12V, mains voltage or whatever). Those other devices would be: a) a pump
> > like you've already got planned, and; b) a solenoid water valve for the
> > return.
> >
> > Then the only work is programming the arduino. There will be freely
> > available sketches to read signals from that pulse sensor, so you'd
> > literally just be adding half a dozen lines to set the relay switches
> > 'high' or 'low' as required.
> >
> > Unfortunately work and family commitments mean I wouldn't have time to
> help
> > hands on, but if you go down that route I'd be happy to help by email if
> > that's useful.
> >
> > Cheers
> > Grant
> >
> >
> > On Wednesday, December 18, 2013, Natalie Duncan <06duncan at gmail.com>
> wrote:
> >
> >> 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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