i made a box which lets you set the time and it keeps that time.. kindof neat, i made it for my grandfather who heats his brass for guns before reloading.. he calls it a "cadence timer" he said he couldnt find one anywhere either.. it will time intervals down to 10 ms and up to something liek 10 minutes. andrew ----- Original Message ----- From: "Jinx" To: Sent: Tuesday, April 08, 2003 8:35 AM Subject: Re: [PIC]: A metronome project > > A pot would probably work but for piano practice my daughter > > says that she has to be able to set the metronome to an EXACT > > speed, and it would seem like an analog pot would be kind of iffy > > for that. > > 10-turn pot and a 100MHz Scenix. Not perfect, but 10ns resolution > is getting there > > Seriously though, an accurate 4Hz (240bpm) would be easy to get > with a normal decent carbon pot, with the granularity of the PIC's > clock in a timer routine. Without a display the problem you'd have is > repeatability. Perhaps even use tables and a keypad and dial up the > required bpm frequency. Would be more easily and accurately settable > than with a pot, so the LCD might not be strictly necessary, but nice > for feedback. People like feedback. Saleable too I'd have thought, if > someone's not already doing it. There's already at least one on-line > > http://www.metronomeonline.com/ > > Google for metronome and you'll find all kinds off downloadables > > Turn it around on her - put pressure sensors on the keys and give her > a mild (at first) jolt when she deviates from the metronome by 0.1%, > she reckons she's the big cheese when it comes to timing ;-) > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics