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2004-07-15 by Robert Adsett
At 06:51 PM 7/15/04 +0000, you wrote: >I think there could be two seperate data loops. one continuous and >one calculated. Even with the time stamp, the calculated same would >only change about 50 times a day at maximum so the total samples will >be small. Speaking of small amoun
2004-07-15 by Robert Adsett
At 03:42 PM 7/15/04 -0400, you wrote: >Actually no, the idea as stated was that the signal started at one value >and went in a monotonic fashion to another (no up and downs) and therefor >the total number of samples could be computed in advance even if the time >span is not known
2004-07-15 by Robert Adsett
At 06:51 PM 7/15/04 +0000, you wrote: >--- In AVR-Chat@yahoogroups.com, Robert Adsett >wrote: > > At 08:32 AM 7/15/04 -0400, you wrote: > > >I didn't read all the thread on this but somewhere I saw someone >talking > > >about 100%. If you only log the time when a certain amount o
2004-07-15 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, Robert Adsett wrote: > At 06:51 PM 7/15/04 +0000, you wrote: > >I think there could be two seperate data loops. one continuous and > >one calculated. Even with the time stamp, the calculated same would > >only change about 50 times a day at maximu
2004-07-15 by David VanHorn
I just got an obsolete part notice from digikey, on the 2343. ATMEL CORPORATION Description: IC MCU 2K FLSH 10MHZ IT 8DIP Manufacturer Part No: AT90S2343-10PI Digi-Key Part No: AT90S2343-10PI-ND Your Most Recent P.O. No: For more information on possible substitutes, please click
2004-07-15 by Robert Adsett
At 06:51 PM 7/15/04 +0000, you wrote: >I think there could be two seperate data loops. one continuous and >one calculated. Even with the time stamp, the calculated same would >only change about 50 times a day at maximum so the total samples will >be small. You are going to need s
2004-07-15 by Dave Mucha
> >soil temperature and soil moisture will be very slow change variables > >so even with a time stamp, it would be a valid concept. > > Actually no, the idea as stated was that the signal started at one value > and went in a monotonic fashion to another (no up and downs) and ther
2004-07-15 by Robert Adsett
At 08:32 AM 7/15/04 -0400, you wrote: >I didn't read all the thread on this but somewhere I saw someone talking >about 100%. If you only log the time when a certain amount of change is is >make you should know ahead how many readings you will have logged. That assumption is valid
2004-07-15 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, Robert Adsett wrote: > At 08:32 AM 7/15/04 -0400, you wrote: > >I didn't read all the thread on this but somewhere I saw someone talking > >about 100%. If you only log the time when a certain amount of change is is > >make you should know ahead ho
2004-07-15 by Brian Fairchild
As I understand it MMC cards use an SPI interface on a 7-pin connector. SD cards have a couple of additional contacts and have a 4-bit wide interface. Do SD cards support the SPI mode of operation? Brian -----Original Message----- From: Dave Mucha [mailto:dave_mucha@yahoo.com] Se
2004-07-15 by Mike Bronosky
Awhile back, when developing a homebrew logging system, I ran acorss the documenting what temperature the wort reached a certain temp. At first I thought of recording the temperature every minute. Then, for me, I had a brain storm. In a loop continue taking the temperature readin
2004-07-15 by Grzegorz Bywalec
Hi! I use ordinary 90S8535 with 3,3V suply voltage and 8MHz clock speed. ISP work fine and there wasn't any trouble. One extra thing was level translator witch separate 5V programer and 3,3V uP. Grzesiek __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more sto
2004-07-15 by nurdin
hi all, im using atmega103 to capture vibration signal from accelerometer and convert the signal with its internal ADC i send digital data through serial com it is successful with ms windows terminal i want to make simple terminal that have similar function (recieve text file and
2004-07-15 by David VanHorn
> >Also, you can find source code at >http://www.avrfreaks.net As well as the file areas here. :)
2004-07-15 by Bernd Felsche
On Thursday 15 July 2004 11:39, Robert Adsett wrote: > At 10:35 PM 7/14/04 +0000, you wrote: > >A bush in shade will see light when the blocking thing moves > >relitaive to the sun. Imagine tree or tree trunk that acks like > >gnomon. as the Earth rotates, the Gnomon will appear
2004-07-15 by David VanHorn
> >Kat (who is now learning VB as she landed a massive multi year VB >contract from home (I love my new clients, they take ME out to dinner) COOL! I did a front end diagnostic package for that battery charger, in VB. Plots voltage, current, temperature, and voltage and temperatur
2004-07-15 by Robert Adsett
At 10:35 PM 7/14/04 +0000, you wrote: > > The bigger issue I see is you are talking about an awful lot of >data for > > the students to analyze. For the 1/min you are talking about 42000 > > points. Will your spreadsheet (or whatever analysis program) >handle > > that? And if it
2004-07-15 by David VanHorn
At 01:30 PM 7/15/2004 +1000, Russell Shaw wrote: >David VanHorn wrote: >> Although the docs lead me to believe this will work, the hardware in hand is trying to convince me otherwise. >> >> Does anyone here know for sure, if the AVRISP will work in a 3V system? > >As long as the
2004-07-15 by Kathy Quinlan
David VanHorn wrote: > Although the docs lead me to believe this will work, the hardware in hand is trying to convince me otherwise. > > Does anyone here know for sure, if the AVRISP will work in a 3V system? Since when does markiting give a flying F*&K about engineering ? Yes th
2004-07-15 by Russell Shaw
David VanHorn wrote: > Although the docs lead me to believe this will work, the hardware in hand is trying to convince me otherwise. > > Does anyone here know for sure, if the AVRISP will work in a 3V system? As long as the internal micro can run at 3.3V, it should. RS232 levels
2004-07-15 by avrcard
Hi Craig, You will find an example of an IDE harddisk based player here: http://www.avrcard.com/showcase/mp3player.htm. The code could be instructive as to the FAT file system, and accessing the CF through the IDE interface should be straightforward. The FAT32 specs can be found
2004-07-15 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, "ali336600" wrote: > If it is possible introduce me some good source or if there > is any free ebook or what ever you thing can help me for learnig > about avr micro. There are lots of examples, in C and assembly language, in the Atmel AVR app not
2004-07-14 by Robert Adsett
At 09:10 PM 7/14/04 +0000, you wrote: > > The simplest method I have run into is to use FRAM. The write speed >of > > SRAM, the non-volatile nature of EE and an endurance of something >like 1e9 > > cycles. Ramtron now makes serial FRAMs in up to 256Kb (thats bits). > > > >I have
2004-07-14 by Robert Adsett
At 08:14 PM 7/14/04 +0000, you wrote: >But if the internal eeprom is similar to eeprom chips the limit is >something on the order of 100,000 writes ? That would allow three >changes every day for the next --- 100 years ? I would expect a >change once or twice a week. For things l
2004-07-14 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "ali336600" wrote: > ... some good source ... I think it would help if you told us which AVR microcontroller you are using, what development board you have and what compiler and tool set you are using. Graham.
2004-07-14 by Dave Mucha
> > OK a weeks worth is ~ 100K at max sampling. Using the largest FRAM chips > that would be 4, maybe 5 per board. Probably doable on space. Would need > to check cost though. I suspect it's no more expensive that a MMC > connector + card. Might well be cheaper. If it's for a stu
2004-07-14 by James Wagner
Dave - In programming, especially embedded processors (like AVR), the term "constant" has a specific meaning. Almost always, it is a quantity that is defined at the time the program is written and does not change again. For example, If you count seconds with a timer and want to d
2004-07-14 by Robert Adsett
At 07:13 PM 7/14/04 +0000, you wrote: >--- In AVR-Chat@yahoogroups.com, Robert Adsett >wrote: > > The longer answer (you knew there was a longer answer) is you need >to write > > something at the microcontroller end to have a 'conversation' over >the > > serial port to get the ne
2004-07-14 by James Wagner
There are apnotes on the Atmel website and good examples at AVRFreaks. Jim On Wed, 14 Jul 2004 09:56:26 -0700 (PDT) jay marante wrote: > how can i make a simple bootloader? how can i use them? > can i make it in C? > > thanks... > > > --------------------------------- > Do you Ya
2004-07-14 by James Wagner
You really DON'T need to think of "constants". There are only two issues. 1. Where is the value stored? It can be stored as part of a table in program code and that is a real constant, for most practical purposes unchangeable. It can be stored in SRAM. In this case, it is highy c
2004-07-14 by Dave Mucha
> The simplest method I have run into is to use FRAM. The write speed of > SRAM, the non-volatile nature of EE and an endurance of something like 1e9 > cycles. Ramtron now makes serial FRAMs in up to 256Kb (thats bits). > I have read a little on the Ramtron chips. they also have
2004-07-14 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, "James Wagner" wrote: > You really DON'T need to think of "constants". > > There are only two issues. > > 1. Where is the value stored? It can be stored as part of a > table in program code and that is a real constant, for most > practical purpose
2004-07-14 by David VanHorn
Although the docs lead me to believe this will work, the hardware in hand is trying to convince me otherwise. Does anyone here know for sure, if the AVRISP will work in a 3V system?
2004-07-14 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, Robert Adsett wrote: > At 04:31 PM 7/14/04 +0000, you wrote: > >I'm getting way ahead of myself vs. my understanding of programming > >as I have only started to read the C programming book. > > > >I was wondering if there is a way to connect a uC
2004-07-14 by Robert Adsett
At 04:31 PM 7/14/04 +0000, you wrote: >I'm getting way ahead of myself vs. my understanding of programming >as I have only started to read the C programming book. > >I was wondering if there is a way to connect a uC to a PC via SC >(serial cable) and input constants ? > >What I a
2004-07-14 by jay marante
how can i make a simple bootloader? how can i use them? can i make it in C? thanks... Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers!
2004-07-14 by Reza
--- jayabox02@yahoo.com.sg wrote: > Guys, > Anyone of you have some information how to capture > printer data using PC, PC will become a printer so > it will be able to capture printer data and sore it > into some file. > > Regards, > Jaya > __________________________________ Do
2004-07-14 by Dave Mucha
Hi all, I'm getting way ahead of myself vs. my understanding of programming as I have only started to read the C programming book. I was wondering if there is a way to connect a uC to a PC via SC (serial cable) and input constants ? What I am thinking about is making a timer. I w
2004-07-14 by ali336600
Dear all I join to this group newly.And start working with avr microcontroller recently.If it is possible introduce me some good source or if there is any free ebook or what ever you thing can help me for learnig about avr micro.thanks alot. I lookin forward to hearing you as soo
2004-07-14 by jayabox02@yahoo.com.sg
----- Original Message ----- From: "Jesper Hansen" To: Sent: Wednesday, July 14, 2004 2:12 AM Subject: Re: [AVR-Chat] Re: Fat16/32 info for AVR->compact flash > > Did you also look at the capacities and prices, Dave ? ;-) > > /Jesper > > ----- Original Message ----- > From: "Dave
2004-07-14 by jayabox02@yahoo.com.sg
Guys, Anyone of you have some information how to capture printer data using PC, PC will become a printer so it will be able to capture printer data and sore it into some file. Regards, Jaya
2004-07-14 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, "Jesper Hansen" wrote: > > Did you also look at the capacities and prices, Dave ? ;-) Compac Flas is 256 meg for about $40.00 and the MMC is 256 meg for about $50.00 the MMC only has about 6 pins for data while the CF requires considderably more l
2004-07-13 by joseph torelli
I recently purchased a "ATA Hard Drive Controller" for www.edtp.com. And a IDE to Compact Flash Adapter. I use Bascom that includes AVR-DOS library. I just got every thing connected and used the software on the site and I am reading and writing files to a CF card and I can plug i
2004-07-13 by Jesper Hansen
Did you also look at the capacities and prices, Dave ? ;-) /Jesper ----- Original Message ----- From: "Dave Mucha" To: Sent: Tuesday, July 13, 2004 7:43 PM Subject: [AVR-Chat] Re: Fat16/32 info for AVR->compact flash > --- In AVR-Chat@yahoogroups.com, Craig Limber wrote: > > > >
2004-07-13 by Craig Limber
Jesper wrote: > Look a little closer, there's some old FAT32 code on my site. Thanks! Musta missed that. I will take a deeper look. The yampp was very inspiring and I will likely order the kit assuming my (so far) futile search for an acceptable commercial player comes up dry. Da
2004-07-13 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, Craig Limber wrote: > > Hi there; > > I am considering embarking on a new AVR project: an MP3 player. I was > thinking of basing it on the yampp mp3 player ( http://www.yampp.com ) > but somewhat modified. One of the mods I want to do is use a "no
2004-07-13 by Graham Davies
--- In AVR-Chat@yahoogroups.com, David VanHorn wrote: > In one printer, I have a printhead > that uses 32V at 19A pulsed for > 300uS every few mS ... You have probably realized that I replied to your very brief message apparently rebutting my recommendation of gridding before I r
2004-07-12 by Jesper Hansen
Craig, Look a little closer, there's some old FAT32 code on my site. /Jesper ----- Original Message ----- From: "Craig Limber" To: Sent: Monday, July 12, 2004 8:36 PM Subject: [AVR-Chat] Fat16/32 info for AVR->compact flash > > Hi there; > > I am considering embarking on a new AV
2004-07-12 by Salam Gobran
Hi I am trying to re-write a program for 901200 from 902313. in the assembly file created by CVAVR, there are a lot of macros, is there a guide for them and which works with 1200?? i failed to find such info after 2 weaks search (: thanks a lot ___________________________________
2004-07-12 by Craig Limber
Hi there; I am considering embarking on a new AVR project: an MP3 player. I was thinking of basing it on the yampp mp3 player ( http://www.yampp.com ) but somewhat modified. One of the mods I want to do is use a "normal" filesystem on the CF card to make it easier to move the fil