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2007-10-02 by Granz
Try this: http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/s2007/cd247_maw72/cd247_maw72/index.html Other pages from this site are definately worth looking at. Art >Sound storage and playback >Posted by: "usafcjf2003" usafcjf2003@yahoo.com usafcjf2003 >Sat Sep 29, 200
2007-09-30 by np np
The simplest way is to just bolt a big ram chip to your microcontroller and simply read in the data from an A2D to the RAM. To playback simply send teh data to a D2A. Once you get past that you are getting into data compression. ----- Original Message ---- From: usafcjf2003 To: A
2007-09-30 by John Samperi
At 09:35 AM 30/09/2007, you wrote: >IE, they use registers and variables that arn't defined for my >ATmega64L. ALL REGISTERS are the same in ALL AVRs no matter the size of the chip. What do you mean variables that are not defined? Variable have nothing to do with the chip type bu
2007-09-29 by John Samperi
At 08:33 AM 30/09/2007, you wrote: > I have been crawling >google for a few hours and havent found anything. Have you been crawling Atmel's application notes? Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place
2007-09-29 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, "usafcjf2003" wrote: > if i could figure out how to parse RAW (wav???) data to the SRAM. The GoldWave audio editor (free download at http://www.goldwave.com) can be used to generate a series of datapoints representing the instantaneous relative am
2007-09-29 by usafcjf2003
Yes and no.... I went thru some of them, and I found something that does sine wave note building, But i am finding it hard to port to my board. IE, they use registers and variables that arn't defined for my ATmega64L. Also, i think I might .... might be able to use this sine wave
2007-09-29 by usafcjf2003
Hey Guys, I am looking for a way to store audio on my ATmega64L board and then play it back thru a peripheral module. I have been crawling google for a few hours and havent found anything. Anyone ever done this before and had any luck? Ohh yea, i have only been using AVR for abou
2007-09-29 by Randy Ledyard
What do we have that you don't have? > -----Original Message----- > From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com]On > Behalf Of fazli_r1987 > Sent: Saturday, September 29, 2007 6:45 AM > To: AVR-Chat@yahoogroups.com > Subject: [AVR-Chat] avr > > > I am learning
2007-09-29 by Jim Wagner
On Sat, 29 Sep 2007 10:45:06 -0000 "fazli_r1987" wrote: > I am learning micro AVR . pleaz sent me several > samples(avr) > This list has no relationship with Atmel. Nobody can supply you with "samples". You won't do any better on the AVRFreaks list. Sorry, you will need to purcha
2007-09-29 by fazli_r1987
I am learning micro AVR . pleaz sent me several samples(avr)
2007-09-25 by top_speed_2006
Anyone have slides which i can study , to learn Avr as i learned Atmel 80c51 befor
2007-09-25 by jrseattle2002
There now is a US based source for these jumper cables: http://www.wizbangdesigns.com/other_devel.html This is a set of 50 15 cm cables for $10.00, with low shipping. Tom plans to carry the 30 cm cables too. He also has other goodies for the Dragon! Jan www.dutchtronix.com/ScopeC
2007-09-21 by Ricardo Callejo
Check Ebay. Ricardo Callejo SURbyte SRL Argentina _____ De: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] En nombre de alfred salazar Enviado el: jueves, 20 de septiembre de 2007 17:31 Para: AVR-Chat@yahoogroups.com Asunto: [AVR-Chat] Does anyone have STK 500 for sel
2007-09-20 by alfred salazar
Plz let me know I need it for school project Thnx!!! Alfredo aesv@yahoo.com Alfred Salazar --------------------------------- Catch up on fall's hot new shows on Yahoo! TV. Watch previews, get listings, and more! [Non-text portions of this message have been removed]
2007-09-18 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "Eric Engler" wrote: > We can't use a Dragon for > ICD on an ATMega128, right? Right. 32K limit. But, as the ATMega128 is supported by the old JTAGICE, you can use one of the JTAGICE clones, such as the AVR ICE- Cube, for an inexpensive solution.
2007-09-17 by Eric Engler
--- In AVR-Chat@yahoogroups.com, "Hans Kallen" wrote: > Here's another approach I took for providing a flexible experimental > and educational platform for the AVR: > http://www.avrcard.com/products/playground_overview.htm We can't use a Dragon for ICD on an ATMega128, right? Eri
2007-09-17 by Thomas Keller
Graham Davies wrote: | Is the AVRfreaks Wiki going to be useful? I've been following along | for a couple of months but I don't see much activity on the 8-bit | side. Should this be where we share the work of maintaining things | like a Getting Started Guide? I personally see a c
2007-09-17 by musabfakhri
Dear all, I have some problems in SmartCard programming ,it will be pleasured to help me,my questions as following : what is the number of EEPROM used in FunCard & Goldwafer ? How can I reprogram (Read/Write) them by AVR AT90S2313? What is meaning ISO 7816? appreciate
2007-09-17 by Graham Davies
This is partly in reply to this: Roy: ... more reason to keep Dave VanHorn's getting ........ started with the AVR code handy. Dave: I feel bad that I haven't updated it in ages. Is the AVRfreaks Wiki going to be useful? I've been following along for a couple of months but I don'
2007-09-17 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "Hans Kallen" wrote: > ... another approach ... > http://www.avrcard.com/products/playground_overview.htm > Maybe you can use some of these concepts for your work. Some of my ideas are similar to what you've done, for example, the little plug-on b
2007-09-17 by Hans Kallen
Here's another approach I took for providing a flexible experimental and educational platform for the AVR: http://www.avrcard.com/products/playground_overview.htm Maybe you can use some of these concepts for your work. Regards, Hans
2007-09-17 by David VanHorn
On 9/16/07, Roy E. Burrage wrote: > ...And then have to listen to a bunch of old farts tell us "Oh yeah, I > had a problem with that when I was just getting started." 8-) > > It seems that no matter how much detail we try to provide to someone > who's new to AVRs, there's always
2007-09-17 by Roy E. Burrage
...And then have to listen to a bunch of old farts tell us "Oh yeah, I had a problem with that when I was just getting started." 8-) It seems that no matter how much detail we try to provide to someone who's new to AVRs, there's always something that gets overlooked. But that's j
2007-09-16 by David VanHorn
> It makes more sense to me to > have the student build their own project as you suggest *after* they've > messed about with some pre-constructed gadgetry and have a clearer > vision of where it will all end up. I agree.. A completed board, with some interesting sensors and outpu
2007-09-16 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "Eric Engler" wrote: > .. what I really want to see is > enough peripherals to make this a > good educational platform. Well, actually, the Dragon Rider isn't supposed to be just one product. I'm starting with what will probably be the Dragon Ride
2007-09-16 by David Kelly
On Sun, Sep 16, 2007 at 03:10:24PM -0000, Eric Engler wrote: > > I love the idea of a module like this but what I really want to see if > enough peripherals to make this a good educational platform. For > example, maybe some I2C ports like RTC or Temperature, and some A/D > perip
2007-09-16 by Eric Engler
--- In AVR-Chat@yahoogroups.com, "Graham Davies" wrote: > I am working on a new product intended to make the AVR Dragon as easy > to use and as flexible as the old STK500. I love the idea of a module like this but what I really want to see if enough peripherals to make this a goo
2007-09-16 by Stefan Wimmer
--- In AVR-Chat@yahoogroups.com, Gustavo Goretkin wrote: > > Thanks for the replies, all. It turns out the problem, of course, was > due to a programming error on my behalf.... hehehe - do you know this? http://www.embedded.com/columns/esdeic/200001794?_requestid=882101 Chuckling
2007-09-16 by Tom Becker
> ... a programming error... I am forever amazed that a software error can so convincingly look like an unlikely and obscure hardware problem. Tom
2007-09-16 by Gustavo Goretkin
Thanks for the replies, all. It turns out the problem, of course, was due to a programming error on my behalf. Whenever channel 3's value was within a certain deadband, I set the variable for the X acceleration AND the Y acceleration to zero instead of just the X acceleration. Ce
2007-09-13 by Graham Davies
--- In AVR-Chat@yahoogroups.com, John Samperi wrote: > You may know of the impending arrival of the STK600 ... My impression is that the STK600 will be priced much higher than the STK500 and AVR Dragon. If the AVR Dragon has a place out there, the Dragon Rider may have one too. >
2007-09-13 by David Kelly
On Fri, Sep 14, 2007 at 07:59:10AM +1000, John Samperi wrote: > > I have a ZIF socket with my Dragon but only used it once, > I have a myriad of boards with many types of AVRs so it is not > something I would buy, I guess it would be something that a > beginner may want to use. I
2007-09-13 by John Samperi
At 09:45 PM 13/09/2007, you wrote: >I am working on a new product intended to make the AVR Dragon as easy >to use and as flexible as the old STK500. You may know of the impending arrival of the STK600 I suppose, we will know more of it's capabilities as soon as the first AVR semi
2007-09-13 by Graham Davies
I am working on a new product intended to make the AVR Dragon as easy to use and as flexible as the old STK500. Briefly, it is a PCB that sits on top of the Dragon and has the familiar target microcontroller area, 10-pin headers and other useful gadgetry. With it, you can use you
2007-09-12 by John Samperi
At 12:41 AM 13/09/2007, you wrote: >Yeh, I've used a simple 78L05. It might be to slow. Have you got a >partnr. of a quick version? Have a look at National automotive regulators LM2940. Regards John Samperi ******************************************************** Ampertronics Pty
2007-09-12 by kernels_nz
Hi Again, Yeah, that reset circuit is correct, it LP filters the reset line, but still allows it to reset quickly when VCC drops out. Ive had endless trouble driving electric motors through fets straight from the output of my micro controllers, noise and spikes can get to the uc
2007-09-12 by Bruce Parham
Gustavo, Assuming that the chip is good, fig 98 in the data sheet (pg 202) shows channels 3 and 4 going directly into the input mux so, if properly configured, thay should act identically. Changing the REF select bits or putting the inputs into differential or pseudo-differential
2007-09-12 by kholt@sonic.net
Yes, the switching channels delay was a big gotcha for me as well. Ken > Gustavo Goretkin wrote: >> I do have access to the scope, and the signal looks clean to me. >> Furthermore, when I switch the two channels and axes, the error is >> pertinent to the input channel of the ADC,
2007-09-12 by max.motor
Thanks Hein & Leon, Yeh, I've used a simple 78L05. It might be to slow. Have you got a partnr. of a quick version? Or would a suppressor be enough. I think swapping the 90s for a Tiny would be the easyest thing to do. Aren't both ones (Tiny26 & -2313) pin compatible with the 90s
2007-09-12 by Andreas Stemmer
Gustavo Goretkin wrote: > I do have access to the scope, and the signal looks clean to me. > Furthermore, when I switch the two channels and axes, the error is > pertinent to the input channel of the ADC, and not the output of the sensor Did you measure directly at the pin of the
2007-09-11 by kernels_nz
Hi, Nice project. A whole bunch of your trouble is probably coming from using the 90S2313, I remember using those quite a few years ago now and they were very susceptible to power supply problems. I would definitely recommend using a newer chip like the Tiny26 or Tiny2313. But if
2007-09-11 by John Samperi
At 03:49 PM 11/09/2007, you wrote: >the error is >pertinent to the input channel of the ADC, and not the output of the sensor I know this is a silly question but have you tried another chip? Regards John Samperi ******************************************************** Ampertronic
2007-09-11 by Gustavo Goretkin
The values are truly random. They seem to sway sometimes to one sign or the other, but typically it is distributed negative and positive equally. There is no biasing error because whichever axis is connected to ADC input 3 (0 being the first input) is fine. The biased, still valu
2007-09-10 by Andreas Stemmer
Gustavo Goretkin wrote: > After I average 3 and 4's values for a while to get the bias of the > accelerometer's outputs, 3 always returns a value of zero (after > removing the bias and having the sensor still), but 4 always returns > some random value that is anywhere from 15-30
2007-09-10 by Leon
----- Original Message ----- From: "max.motor" To: Sent: Monday, September 10, 2007 4:14 AM Subject: [AVR-Chat] How to overcome brownout spikes (AT90S2313) Hi All, Could you help me on this one? The AT90S2313 seems to be very picky about it's power supply. Flicking an electrical
2007-09-10 by max.motor
Hi All, Could you help me on this one? The AT90S2313 seems to be very picky about it's power supply. Flicking an electrical load on or off randomly put the ACU into reset. I've tried to separate all ins & outs, double buffered the PSU, used some of those ferrite chokes. But... st
2007-09-09 by David Kelly
On Sep 8, 2007, at 9:47 AM, Dixit wrote: > Can Anybody help me to generate code for MODBUS protocol based > communication application via 8052 chip or any other AVR chips. Several years ago I did an ASCII modbus on AVR. I second John's recommendation of the documentation availabl
2007-09-08 by Gustavo Goretkin
I tried it with both axis, and I've unbiased my signal. One axis works fantastically; the other does not. Gustavo Jim Wagner wrote: > > On Sat, 08 Sep 2007 03:11:18 -0400 > Gustavo Goretkin > wrote: > > Hi, > > I'm running some code on an ATMega32 (PDIP, 16mHz) I'm > > using 4 of
2007-09-08 by John
Dixit, If you are looking for commercial reasons, check out: http://www.sunlux-india.com/MODBUSProtocolSuite.htm It seems to be a decent set of libraries available in all kinds of formats. If you are looking for academic reasons, I would strongly recommend you start by reading th
2007-09-08 by Dixit
Dear All, Can Anybody help me to generate code for MODBUS protocol based communication application via 8052 chip or any other AVR chips. THANKS & WITH REGARDS, Dixit Solanki, _____ **** DISCLAIMER **** The contents of this e-mail are intended for the named addressee only. It cont