[PD] Connection with sensors - new devices?

[Christian Klippel]

hi all,

Am Dienstag 20 Dezember 2005 16:41 schrieb B. Bogart:
> Hi,
>
> The page says this thing has both USB (HID) and RS232 so you should be
> able to use [comport] or [hid] (but the later may be more sticky)
>
> Maybe christian is working on some multiIO module for something like this?
>
> b.
>


there are complete compass sensors available, either digital (only giving bits 
for the 4 directions), or analogue (with continous output), like these here:

http://www.imagesco.com/catalog/DigitalCompass/DigitalCompass.html

they _could_ be connected to the multio (or any other sensor interface that 
uses the 0..+5volt indistry standard for that purpose), but since the voltage 
swing is below one volt, a small op-amp circuit may be needed.

range-finders are also available, either as ready-ti-use units or as kits, 
that also have a 0..5 volt output. if you dont need the high-range of 
serveral meters, i recommend the use of optical sensors, like the ones from 
sharp (at the lower right, the ones with the analogue output):

http://dkc3.digikey.com/PDF/T053/1586.pdf

also, im starting to create a miniature-version of the multio that will fit on 
half a euro board, so only 100x80 mm, maybe 20 mm height, with the same 
functionality as the big box with one userboard. since that involves the use 
of only smt devices, it is much more complicated to build yourself. that will 
be done after i got the new firmware up....

anyhow, if someone needs something really small and simple, heres a hint: use 
the microchip 18f4550 microcontroller. that one has a built-in usb interface. 
there are tons of ultra-simple circuits to program that chip. that chip also 
has a/d converters integrated, so you can directly connect sensors to it. all 
the needed tools are freely available on the microchip site. even more, if 
you get the chip itself as free samples, you can make yourself a small 
interface for below 10 dollars, using usb.....

greetings,

chris

> On Tue, December 20, 2005 5:27 am, João Miguel Pais said:
> > Hi,
> >
> > I came upon some devices which could be interesting to use as controllers
> > with pd. I don't know if something like that already exists, but wanted
> > to ask if it seems possible to modify/create a protocoll that would allow
> > a connection between those devices and PD itself. AS I am no programmer,
> > I really don't know if it is possible or not.
> >
> > The devices are in http://www.techdesign.be/projects/023/023.htm and
> > http://www.techdesign.be/projects/008/008.htm . As said, probably there's
> > already something much more fine, but there seem to be simple and
> > portable enough to be quite handy for an improvisation.
> >
> > Greetings,
> >
> > Joao
> >
> > --
> > Lugostr. 14
> > 79100 Freiburg i. Br.
> > Deutschland
> > +49 (0)761 7074997
> > jmmmp at arcor.de
> >
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