I have bought a 4.7 K pot yesterday, it's working perfectly. The guy at the shop said it didn't really matter as long as i stayed within the 1K - 10K range. I'm gonna strat building a real interface around the board pretty soon.
Pierre 2011/4/28 Richie Cyngler <[email protected]> > Exciting isn't it =) > > My understanding is that Arduinos in general are pretty robust (which is > good because my electronics knowledge is extremely minimal.) I've been using > 1K pots with no problems at all. LEDs are another good place to start > because they are cheap and easy to see when they are working. Good luck! > > On Wed, Apr 27, 2011 at 5:28 AM, Pierre Massat <[email protected]> wrote: > >> Hi, >> I just got my Uno in the mail today. It's so cool! I'm all excited. >> I've been searching their website for some basic info regarding he >> components i should use, but haven't found anything. >> Do you know if i could use just any pot? Or is there a specific value i >> should use? Also, can i use a battery for power? >> It seems like their tutorials are mainly about programming the boards, and >> not so much about interfacing them with the real world. And as of 2011 Tron >> is still just pure fiction, and guess what, i'm still plain real. >> >> Thank you all very much for your advice! >> >> Pierre >> >> >> 2011/4/16 Martin Peach <[email protected]> >> >>> On 2011-04-16 07:09, Pierre Massat wrote: >>> >>>> Hi, >>>> I just ordered a Uno, i think it will suffice. >>>> >>>> Martin, I'd like to replace my pot with an optical sensor if it's >>>> quieter. Only i've never used one. How does it work? How do i put this >>>> in the pedal? >>>> >>>> >>> I got a reflective sensor which consists of an IR LED and a photo >>> transistor in one package, with both components facing in one direction like >>> the Vishay TCRT5000L: >>> >>> http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=751-1034-5-ND >>> >>> You put a 10 kOhm or so resistor to 5V on the collector of the transistor >>> (bigger resistor = more sensitivity but adds noise) and a 330 Ohm resistor >>> from 5V to the anode of the LED (smaller resistor = more sensitivity but >>> don't burn out the LED), the other two pins to ground. Then connect the >>> transistor collector to an arduino analog in. >>> >>> Mechanically, mount the device so it's looking up at the underside of the >>> pedal and adjust things until you get a good range of values. It may help to >>> stick some reflective material on the pedal, for greater sensing range. >>> >>> These kinds of sensors are used a lot in printers to detect paper, so if >>> you pull apart old printers that's one thing to look for, besides the >>> motors. >>> >>> Martin >>> >>> >> >> _______________________________________________ >> [email protected] mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> >> > > > -- > Richie >
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