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2006-08-14 by Zack Widup
You wouldn't have something for arctangent, would you? I've been kicking around the Pade approximation in my spare time but it's a lot of work. Accuracy to a degree is probably sufficient for my usage. Zack On Mon, 14 Aug 2006, Mark Jordan wrote: > On 14 Aug 2006 at 16:51, Peter
2006-08-14 by Mark Jordan
On 14 Aug 2006 at 16:51, Peter Harrison wrote: > Mark Jordan wrote: > > I'm looking for a 32-bit Square-Root Assembler routine > > for the ATMEGA162 processor. > > > > Have adapted a 16-bit routine I found on the net, but > > is is very slow. > > > > Any ideas? > > > > Thanks, >
2006-08-14 by Riccardo Castellani
I'm trying to upgrade firmware to AVR-ISP programmer but there is an error during operation.. I'm using AVRStudio 4.12 SP3 build 490. When I'm connecting to AVR I have message which says my firmware is 2.01 and firmware of this AVRStudio version is 2.07 so I follow istructions to
2006-08-14 by Peter Harrison
Mark Jordan wrote: > I'm looking for a 32-bit Square-Root Assembler routine > for the ATMEGA162 processor. > > Have adapted a 16-bit routine I found on the net, but > is is very slow. > > Any ideas? > > Thanks, > Mark Jordan > How slow? Can you give a figure for an example calcul
2006-08-14 by mago Umandam
thank you bob.. they are pretty good for my application... Bob Paddock wrote: On Sunday 13 August 2006 02:49, mago Umandam wrote: > 30mA on standby consumption is too high for my application since it is battery operated and left in field. > so i have to change my priority from st
2006-08-14 by Bob Paddock
On Sunday 13 August 2006 02:49, mago Umandam wrote: > 30mA on standby consumption is too high for my application since it is battery operated and left in field. > so i have to change my priority from stability to low power consumption..has anyone come accross an ultra low power R
2006-08-14 by David VanHorn
On 8/13/06, mago Umandam wrote: > > 30mA on standby consumption is too high for my application since it is > battery operated and left in field. so i have to change my priority from > stability to low power consumption..has anyone come accross an ultra low > power RTC ( less than
2006-08-14 by Mark Jordan
I'm looking for a 32-bit Square-Root Assembler routine for the ATMEGA162 processor. Have adapted a 16-bit routine I found on the net, but is is very slow. Any ideas? Thanks, Mark Jordan
2006-08-13 by mago Umandam
30mA on standby consumption is too high for my application since it is battery operated and left in field. so i have to change my priority from stability to low power consumption..has anyone come accross an ultra low power RTC ( less than 10 uA on standby)? seems dallas RTC's don
2006-08-13 by Jim Wagner
Just a "temperature compensated crystal" won't do it. At that level, the oscillator, itself has a major effect. Instead, a TCXO (Temperature Compensated Xtal Oscillator) is needed. This is an entire oscillator plus crytal in a "box" and compensated, often digitally. Jim On Sat, 1
2006-08-12 by John Samperi
At 06:49 PM 12/08/2006, you wrote: >i am looking for a precise SMT crystal that has temperature >compensation feature ... Dallas (Maxim) make them for clock circuits at 32KHz (DS32KHz) Regards John Samperi ******************************************************** Ampertronics Pty.
2006-08-12 by David VanHorn
> > > Seems like you could put a resistor next to the crystal and a thermistor > and just hold a temperature (use a power transistor and PWM to vary the > heat from the resistor). They make xtal ovens like this, but the power consumption is a problem in many applications. In my r
2006-08-12 by David VanHorn
> i am looking for a precise SMT crystal that has temperature > compensation feature ... anyone have seen such product in the internet? > i had searched dozens of crystal manufacturers but i didnt see one. > i dont know if such product really exist. > most crystals available have
2006-08-12 by Ned Konz
magzky02 wrote: > hello to everyone... > > i am looking for a precise SMT crystal that has temperature > compensation feature ... anyone have seen such product in the internet? > i had searched dozens of crystal manufacturers but i didnt see one. > i dont know if such product rea
2006-08-12 by Riccardo Castellani
I'm trying building my first circuit using ATmega8535 using ATMEL AVRISP programmer. What do you suggest me : - can I use breadboard or 1000 holes circuit board ? - can I use what Vcc is necessary ? [Non-text portions of this message have been removed]
2006-08-12 by magzky02
hello to everyone... i am looking for a precise SMT crystal that has temperature compensation feature ... anyone have seen such product in the internet? i had searched dozens of crystal manufacturers but i didnt see one. i dont know if such product really exist. most crystals ava
2006-08-09 by David VanHorn
> > > Give it a try, what have you got to lose? Your sanity? Too late > for that :-D Well, it's deeper than just that.. The ices have big problems too. They come and go without any apparent correlation, so there's no way to prevent them or deal with them.. I've had it go as far a
2006-08-08 by John Samperi
At 04:44 AM 9/08/2006, you wrote: >studio still refuses to program with anything I've got. OK I think I know what's happening and should have thought of it before. :( The latest versions on SP3 both B488 and B490 seem to forget the ISP frequency settings and reverts back to a hig
2006-08-08 by David VanHorn
On 8/8/06, BryanW wrote: > > Whats the studio version and service pack, maybe it needs a firmware > update. I know that on the very latest up to date version you do need one. Been there, done that. No, studio is CRAP, I'm sorry to say. I've had problems like this for several year
2006-08-08 by David VanHorn
On 8/8/06, OWEN-A wrote: > > David, > My problem was also caused by studio, I was using 4.12 - 472 sp2 at the > time > are you using sp2 or sp3. > Owen. SP3. [Non-text portions of this message have been removed]
2006-08-08 by OWEN-A
David, My problem was also caused by studio, I was using 4.12 - 472 sp2 at the time are you using sp2 or sp3. Owen. -----Original Message----- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of David VanHorn Sent: Tuesday, August 08, 2006 2:12 PM To: AV
2006-08-08 by BryanW
Whats the studio version and service pack, maybe it needs a firmware update. I know that on the very latest up to date version you do need one. ----- Original Message ----- From: David VanHorn To: AVR-Chat@yahoogroups.com Sent: Tuesday, August 08, 2006 5:12 AM Subject: Re: [AVR-C
2006-08-08 by David VanHorn
> > Can you try and hook up the STK500 as an ISP programmer to the board? > May have to connect some flying leads if you don't have the ISP pins > available to a connector. > If you need it I have a M64/M128 (CONT3) circuit diagram on the download > page of my website to double c
2006-08-08 by David VanHorn
It's been an interesting day. The root of the problem seems to be AVR studio. I was able to visit PRLLC (now Priio) and use their non-studio programmer which worked just fine. Those same boards would not program here, nothing worked. And on one PC I did a full strip and reinstall
2006-08-08 by OWEN-A
Is it an Atmel JtagIce I have had trouble with MkII after using 1 wire debug and not closing Studio properly the MkI still worked but the MkII would not, The fix was a complete uninstall of Studio saving NO settings 'clear the registry' reboot the computer then reinstall Studio.
2006-08-07 by John Samperi
At 01:22 AM 8/08/2006, you wrote: >So far, I can't get any of them talking, and unfortunately, I don't >have any other platforms handy with Jtag ice ports to test against. Can you try and hook up the STK500 as an ISP programmer to the board? May have to connect some flying leads
2006-08-07 by Steve Baldwin
> Ripped out and reinstalled studio. > Changed to STK-500/501 combo, still same problem. Cable length ? I found that I got nowhere with a Duo-ICE until I shortened the IDC cable. Steve. ========================================== Steve Baldwin Electronic Product Design TLA Microsy
2006-08-07 by Russell Shaw
Dave VanHorn wrote: > Still working on this one, but I have a critical delivery to do, and > need other eyes. > > Jtag ice connected to a project, but there's nothing on the Jtag pins > other than the M128 itself. > > Jtag is seen by studio, but can't debug, and can't be opened a
2006-08-07 by Dave VanHorn
Ok, it gets better. Ripped out and reinstalled studio. Changed to STK-500/501 combo, still same problem.
2006-08-07 by Dave VanHorn
Still working on this one, but I have a critical delivery to do, and need other eyes. Jtag ice connected to a project, but there's nothing on the Jtag pins other than the M128 itself. Jtag is seen by studio, but can't debug, and can't be opened as a chip programmer to check fuses
2006-08-03 by Tom Becker
> 1. Have complex servo motor controls with fast... > 2. Have motors to match, with low inertia rotors... > 3. Your drive profile will be complicated > 4. Absolute encoders are expensive > 5. Resolvers, instead of absolute encoders, are expensive... > 6. DC servo motors will also
2006-08-03 by amol_deshmukh
If u mean DC motor position / speed control with encoder feedback then go through this book Mobile Robots from inspiration to Implimentation by Jones http://www.me.iitb.ac.in/~adeshmukh/download/Mobile%20Robots,%20from%20Inspiration%20to%20Implementation%20by%20Jones.pdf The auth
2006-08-03 by Peter Harrison
Dave Mucha wrote: > Hi all, > > I am wondering if nayone know if there is anything on using DC motors > as stepper motors. using a step and direction input and an encoder to > feedback to the driver circuit with the position or the shaft ? > > This is different than the R/C servo
2006-08-03 by Roy E. Burrage
Research Numerical Control (NC), Dave. That will get you where you want to go, albeit not very inexpensively nor will it be simple. You'll have to: 1. Have complex servo motor controls with fast accel/decel characteristics 2. Have motors to match, with low inertia rotors and they
2006-08-03 by Dave Mucha
Hi all, I am wondering if nayone know if there is anything on using DC motors as stepper motors. using a step and direction input and an encoder to feedback to the driver circuit with the position or the shaft ? This is different than the R/C servo motor applicaions. Any ideas ?
2006-07-28 by Jim Wagner
The Original Poster should know that there really is no set of "interface ICs commonly used with AVRs". The AVR is a very general purpose microcontroller and peripheral ICs that work with other micros also work with the AVR (mostly). For dialling, you first need to determine whet
2006-07-28 by erikc77099
--- In AVR-Chat@yahoogroups.com, "behrooz_hariri" wrote: > > I am looking for a reference book of useful ICs in automation > circuits. Their datasheet and maybe a sample circuit. > Could u help me with a link or a book title? > Tnx > Here is an idea. There is a Yahoo group called
2006-07-28 by David VanHorn
On 7/28/06, Behrooz Hariri wrote: > > Well, what I had in my mind was to make my AVR project capable of dialing > a phone number in case of an alert, and send a voice message (related to > alert type) over the phone line. I guess at least two ICs are needed: One > for dial up fun
2006-07-28 by Behrooz Hariri
Well, what I had in my mind was to make my AVR project capable of dialing a phone number in case of an alert, and send a voice message (related to alert type) over the phone line. I guess at least two ICs are needed: One for dial up functions (busy line, redialing, etc) and the o
2006-07-28 by Mike Betz
FYI Hirose make a rectangular housing which takes pins. The pins are crimped individually onto wires and then inserted into the housing. Hirose product name is: '2.54mm Pitch High Density Connector'. 3M make a product called '3M Round Conductor Flat Cable' It is a ribbon cable wi
2006-07-28 by Russell Shaw
Jim White wrote: > Yes, a bit more. We sliced the wires of the ribbon cable apart, lined them up with the right pins on the 10 pin IDC socket, then crimped on the back of the socket. A pain but it works. > > We wanted to preserve the 6 pin connector on that cable as well because
2006-07-28 by Jim White
Yes, a bit more. We sliced the wires of the ribbon cable apart, lined them up with the right pins on the 10 pin IDC socket, then crimped on the back of the socket. A pain but it works. We wanted to preserve the 6 pin connector on that cable as well because we are moving to that f
2006-07-27 by Zack Widup
I doubt you are going to find all the info in one place. Also, the devices you're seeking may not be made by Motorola or National. If you have a specific function in mind, I or others here may be able to recommend a chip that will work. I assume you're not in the USA. A good star
2006-07-27 by Behrooz Hariri
Thank but I am looking for Motorola or National semiconductor datasheet e-book to find suitable ICs to use or extend my AVR project capabilities. Autodialing, voice recording, etc. bibin john wrote: download avrbook.rar from yahoo group-booksbybibin and some books for avr in yaho
2006-07-27 by bibin john
download avrbook.rar from yahoo group-booksbybibin and some books for avr in yahoo group-avrbooks, if you want to do with avr behrooz_hariri wrote: I am looking for a reference book of useful ICs in automation circuits. Their datasheet and maybe a sample circuit. Could u help me
2006-07-27 by behrooz_hariri
I am looking for a reference book of useful ICs in automation circuits. Their datasheet and maybe a sample circuit. Could u help me with a link or a book title? Tnx
2006-07-26 by Dave Hylands
Hi Jim, > For now we will solve the conversion from 6 to 10 on our existing boards by crimping a 10 pin header on the 6 pin cable from the MkII. Hmm. I think I'm missing something. Since the pinouts for the two connectors are wildly different, I'm not sure how this would work. Pa
2006-07-26 by Jim White
Follow-up: The Farnell 1096979 suggested by REB is the right part and we will go with it. The matching 1106769 will be used to 'plug' that connector on production boards so nothing else is inadvertently stuck into it. The suggested Mouser 6 pin header http://www.mouser.com/catalo
2006-07-26 by Amir Rahafrooz
I'v written a book about AVR microcontrollers in farsi, in addition I pdf file in farsi for working with AVRs that you can get it free in: http://bme.aut.ac.ir/arahafrooz/An%20Introduction%20to%20AVR% 20Microcontrollers.PDF to know more you can visit: http://bme.aut.ac.ir/arahafr
2006-07-25 by bibin john
if you want to do with winaVR then refer avrbook.rar from yahoo group-booksbybibin refer books for avr on yahoo group-avrbooks epowere_rm wrote: I hope u can help me I am a new person in avr i decid to learn C AVR using codevission programme my problem is that i cannot understand