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2007-04-02 by kholt@sonic.net
I spent years of development deriving a good, quick(2 cycles) fundamental pitch from a guitar string - it ain't easy. > I tried to do crossing with my guitar but the signal was too complex. > > > ----- Original Message ---- > From: "BobGardner@aol.com" > To: AVR-Chat@yahoogroups.
2007-04-02 by bobby cossum
--- In AVR-Chat@yahoogroups.com, "negink63" wrote: > > Hi > I want to make a tuner an I do not know how I can measure the frequncy > of an analog signal with AVR. I will be really appriciated If somebody > could help me. > you can flash an led at the frequency to which you want t
2007-04-02 by John Samperi
At 04:52 AM 3/04/2007, you wrote: >he wants the fundamental, Would it not be easier to measure the frequency of the local oscillator and the add the number of the frequency of the IF stage? I guess a frequency divider would be necessary unless one has a 200MHz counter inside the
2007-04-02 by np np
I tried to do crossing with my guitar but the signal was too complex. ----- Original Message ---- From: "BobGardner@aol.com" To: AVR-Chat@yahoogroups.com Sent: Monday, 2 April, 2007 7:55:04 PM Subject: Re: [AVR-Chat] Frequency meter So what? he doesnt want to do spectral analysis
2007-04-02 by BobGardner@aol.com
So what? he doesnt want to do spectral analysis, he wants the fundamental, which is the time between zero crossings. If you know 'about' the freq to expect, you can amplify and low pass the string to get rid of a lot of the harmonics. I always help the guitar tuner out by turning
2007-04-02 by David VanHorn
> > > Would have preferred a sensible reply to a sensible question. > Dont want this rubbish in my inbox ! A little bit of light ribbing to a rather vague question is all. In order to help, we need to know what sort of tuner the OP is talking about. [Non-text portions of this mes
2007-04-02 by np np
The signal from a guitar is rarely sinusoidal. ----- Original Message ---- From: "BobGardner@aol.com" To: AVR-Chat@yahoogroups.com Sent: Monday, 2 April, 2007 6:59:20 PM Subject: Re: [AVR-Chat] Frequency meter There is a guitar tuner project at avrfreaks... in general, you apply
2007-04-02 by np np
Lifes been good to you? Shame about the jokes. Would have preferred a sensible reply to a sensible question. Dont want this rubbish in my inbox ! ----- Original Message ---- From: Ken Arck To: AVR-Chat@yahoogroups.com Sent: Monday, 2 April, 2007 7:00:49 PM Subject: Re: [AVR-Chat]
2007-04-02 by Ken Arck
At 10:53 AM 4/2/2007, you wrote: >You can tune a piano but you can't tuna fish. :-)
2007-04-02 by BobGardner@aol.com
There is a guitar tuner project at avrfreaks... in general, you apply the signal to be measured to the analog comparator, count clocks between edges using input capture. -----Original Message----- From: microbrix@gmail.com To: AVR-Chat@yahoogroups.com Sent: Mon, 2 Apr 2007 1:35 P
2007-04-02 by Zack Widup
You can tune a piano but you can't tuna fish. :-) On Mon, 2 Apr 2007, David VanHorn wrote: > On 4/2/07, negink63 wrote: > > > > Hi > > I want to make a tuner an I do not know how I can measure the frequncy > > of an analog signal with AVR. I will be really appriciated If somebody
2007-04-02 by David VanHorn
On 4/2/07, negink63 wrote: > > Hi > I want to make a tuner an I do not know how I can measure the frequncy > of an analog signal with AVR. I will be really appriciated If somebody > could help me. Tune a Radio, Tune a guitar, Tuna Piano, Tuna Fish? [Non-text portions of this mess
2007-04-02 by zolauri
I use a digit scope that is in the subject. I'd like to know if anybody know this model or somebody has any kind of experience with it. It gives an error message after every single startup so I'd like to know how serious the problem is. I have put my question in a few discussion
2007-04-02 by David VanHorn
On 4/1/07, Bryan Martin wrote: > > where can you find Nordic NRF905 for sale in the US? I searched jameco to > no avail. The RFDigital modules are FCC approved (modular) with internal antennas, and are all built and ready to go. AVR based, for some strange reason. :) [Non-text po
2007-04-02 by negink63
Hi I want to make a tuner an I do not know how I can measure the frequncy of an analog signal with AVR. I will be really appriciated If somebody could help me.
2007-04-02 by Don AE5K
>> where can you find Nordic NRF905 for sale in the US? I >> searched jameco to no avail. A simple Google on "Nordic NRF905" yields: http://www.semiconductorstore.com in the US, no minimum order, single quantities, inexpensive, toll free number (for US).
2007-04-02 by Alex Shepherd
> where can you find Nordic NRF905 for sale in the US? I > searched jameco to no avail. You might have a look at: http://www.sparkfun.com/commerce/categories.php?cPath=16_114 Alex
2007-04-02 by Bryan Martin
where can you find Nordic NRF905 for sale in the US? I searched jameco to no avail. I have used some of the lynx modules http://www.linxtechnologies.com/ and they seem to be decent and fairly easy to interface but are very sensitive to antenna type and interference. Bryan ----- O
2007-04-01 by kernels_nz
Sorry, I have no idea, Im sure google will know the answer. I live in New Zealand and buy them from AVNET. I have some friends there, so they sell me quantities in the 10s at a time. Cheers Hein B --- In AVR-Chat@yahoogroups.com, "Bryan Martin" wrote: > > where can you find Nordi
2007-04-01 by kernels_nz
Hi there, I use the Nordic NRF905 433MHz chips just about every day of my life, about $7 for the chip with all it's surrounding components and very easy to work with. I can recommend it for any wireless project. Cheers Hein B, Auckland New Zealand --- In AVR-Chat@yahoogroups.com,
2007-03-31 by Ralph Hilton
On Sat, 31 Mar 2007 12:07:35 -0000 you wrote: >Hi > >I have a processor(AVR microcontroller) that take output of some >sensors and caculate the avrege of this outputs and send this avrage >to a main processor that is far from it . >My problem is about making a wireless communicat
2007-03-31 by Cat C
Use the Zigbee! ----Original Message Follows---- From: "negink63" Reply-To: AVR-Chat@yahoogroups.com To: AVR-Chat@yahoogroups.com Subject: [AVR-Chat] wireless communication between processors Date: Sat, 31 Mar 2007 12:07:35 -0000 Hi I have a processor(AVR microcontroller) that ta
2007-03-31 by negink63
Hi I have a processor(AVR microcontroller) that take output of some sensors and caculate the avrege of this outputs and send this avrage to a main processor that is far from it . My problem is about making a wireless communication between the processor and the main processor. I w
2007-03-29 by Reza
sorry for poor english; first of all, you may misunderstand power of your micro and actual data rate you need to transfer between A and B. for a common good idea it could be used by a shared network using a RS485 bus or something, which could work with any micro even with one ser
2007-03-29 by David Kelly
On Mar 28, 2007, at 6:36 PM, Jeffrey Engel wrote: > --- John Samperi wrote: > >> At 07:38 AM 29/03/2007, you wrote: >>> So ... after the big discussion on >> >> Thanks for the even bigger quadruple posting :) > > I think that was Yahoo. It happened to me on a couple > of e-mail L
2007-03-29 by Ralph Hilton
On Wed, 28 Mar 2007 21:19:17 EDT you wrote: > >In a message dated 3/28/2007 9:15:53 P.M. Eastern Daylight Time, >kernels@slingshot.co.nz writes: > >SORRY ! Wasnt me, no idea why that message got pasted so many times ! Its a bug at Yahoo. http://blog.360.yahoo.com/y_groups_team --
2007-03-29 by AVR Development
Just checking to see that my emails post. Been having a little problem with that at times. Barry [Non-text portions of this message have been removed]
2007-03-29 by Zack Widup
Yahoo is having problems problems problems ... Every Yahoogroup I'm on is sending at least 3 copies of every e-mail sent to it today. Expect to see a few of this one unless they fixed the bug by now ... Zack On Thu, 29 Mar 2007, John Samperi wrote: > At 07:38 AM 29/03/2007, you w
2007-03-29 by David Kelly
On Mar 28, 2007, at 4:38 PM, kernels_nz wrote: > But! To my dismay I found that the codevision header files dont > contain defines for bits like SPIF in the SPSR (SPI status register) > do the other compilers like GCC and IAR have header files that have > the names of each bit of
2007-03-29 by AVR Development
IT WAS YOU!! >:( hehe -----Original Message----- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of kernels_nz Sent: Wednesday, March 28, 2007 5:15 PM To: AVR-Chat@yahoogroups.com Subject: [AVR-Chat] Re: Some C help please ! SORRY ! Wasnt me, no idea wh
2007-03-29 by BobGardner@aol.com
In a message dated 3/28/2007 9:15:53 P.M. Eastern Daylight Time, kernels@slingshot.co.nz writes: SORRY ! Wasnt me, no idea why that message got pasted so many times ! ============================================== I thought your cat fell asleep on the 'send' key *****************
2007-03-28 by Jeffrey Engel
--- John Samperi wrote: > At 07:38 AM 29/03/2007, you wrote: > >So ... after the big discussion on > > Thanks for the even bigger quadruple posting :) > > > Regards > > John Samperi I think that was Yahoo. It happened to me on a couple of e-mail Lists. Jeff Engel Arlington, TX US
2007-03-28 by kernels_nz
SORRY ! Wasnt me, no idea why that message got pasted so many times ! --- In AVR-Chat@yahoogroups.com, "kernels_nz" wrote: > > So ... after the big discussion on bit-shifting and masking I decided > to rewrite a bit of pretty rough wireless code I use a lot with my new > found ap
2007-03-28 by Robert Adsett
At 08:08 AM 3/29/2007 +1000, John Samperi wrote: >At 07:38 AM 29/03/2007, you wrote: > >So ... after the big discussion on > >Thanks for the even bigger quadruple posting :) I've been seeing a lot of that from Yahoo today Robert http://www.aeolusdevelopment.com/ From the Divided
2007-03-28 by John Samperi
At 07:38 AM 29/03/2007, you wrote: >So ... after the big discussion on Thanks for the even bigger quadruple posting :) Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA Tel.
2007-03-28 by kernels_nz
So ... after the big discussion on bit-shifting and masking I decided to rewrite a bit of pretty rough wireless code I use a lot with my new found appreciation of making my code more portable and tidy-er. But! To my dismay I found that the codevision header files dont contain def
2007-03-28 by Cat C
Thanks to everybody. It is a real clock, in fact coming from another "system". I'll see how it goes. Cat _________________________________________________________________ http://local.live.com/?mkt=en-ca/?v=2&cid=A6D6BDB4586E357F!399
2007-03-28 by David Kelly
On Tue, Mar 27, 2007 at 12:57:32PM -0500, Jim Wagner wrote: > Ought to work just fine. > > If they are using the same clock, then if the baud rates > are also set to be the same, the baud rates WILL be the > same. This should be as close to zero-error async serial as > you can ge
2007-03-27 by John Samperi
At 12:59 AM 28/03/2007, you wrote: >Hrm... I hadn't thought about losing sync; Think about some noise clobbering JUST 1 clock pulse :) >So I started looking at I2C (TWI/Neurowire/???), but it appears that >the EUSART can't do TWI. I can't remember which chip you were using but it
2007-03-27 by David VanHorn
> > > > An external clock source should be good. There should be > little or no interaction between the two clocked chips. My only worry would be EMI. Plan on a series resistor between the clock source and each "client" of about 100-ish ohms, and a definite return path in the gro
2007-03-27 by Jim Wagner
Ought to work just fine. If they are using the same clock, then if the baud rates are also set to be the same, the baud rates WILL be the same. This should be as close to zero-error async serial as you can get. You can also use any arbitrary baud rate for the micro-micro link as
2007-03-27 by Cat C
Hello, I have this idea that I think should work, but might have some problems... The first "A" (Mega8) would do some specialized tasks, and it currently talks to a PC through it's serial port. The PC issues commands, and gets results. I want to replace the PC with a second "B" c
2007-03-27 by David VanHorn
> > Still looking for suggestions, but since I got hung up on the SS_A vs > PSCOUT00, I'm also wondering if anybody is using some clever tools / > preprocessor / ??? to keep the pins/functions from clobbering each > other. I'd sure like to see one. It scares me a bit that those b
2007-03-27 by thormj_altea
--- In AVR-Chat@yahoogroups.com, John Samperi wrote: > > At 01:05 AM 27/03/2007, you wrote: > >2. SPI [slave] requires an additional line for the select, > > What's so strange about this? ALL SPI implementations require > a slave select line, you can ground the SS pin if you like
2007-03-26 by John Samperi
At 01:05 AM 27/03/2007, you wrote: >2. SPI [slave] requires an additional line for the select, What's so strange about this? ALL SPI implementations require a slave select line, you can ground the SS pin if you like and it will work but if for some reason you lose synch then it w
2007-03-26 by thormj_altea
With all this talk on using bits & shifts & macros, I figured I should toss another one out: Keeping track of which bits are used using the preprocessor... I've been playing around with SiLabs' 8051 chips and their nifty digital crossbar (err... that thing is a pain, but it is ni
2007-03-26 by Roy E. Burrage
Amir Hosseini wrote: >--- In AVR-Chat@yahoogroups.com, BobGardner@... wrote: > > >>how to connect 2 AVR with out serial >>for Example : >>PORTD of AVR1 == Sending data >>PORTD of AVR2 == Resiving data XXXXXX >>=============================== >>8 bit parallel: Need to send on one
2007-03-26 by Ralph Hilton
On Sun, 25 Mar 2007 22:01:29 -0000 you wrote: >how to connect 2 AVR >with out serial >for Example : >PORTD of AVR1 == Sending data >PORTD of AVR2 == Resiving data > >if this example is corrected ? I would look at the available ports on the AVRs you are using, eliminate those need
2007-03-25 by BobGardner@aol.com
how to connect 2 AVR with out serial for Example : PORTD of AVR1 == Sending data PORTD of AVR2 == Resiving data XXXXXX =============================== 8 bit parallel: Need to send on one port and receive on another, also need handshake lines Or use SPI if distance is not too grea
2007-03-25 by Amir Hosseini
--- In AVR-Chat@yahoogroups.com, BobGardner@... wrote: > > how to connect 2 AVR with out serial > for Example : > PORTD of AVR1 == Sending data > PORTD of AVR2 == Resiving data XXXXXX > =============================== > 8 bit parallel: Need to send on one port and receive on anot