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2005-02-02 by Robert Adsett
At 06:31 AM 2/3/05 +1300, Eric wrote: Apparently nothing. Was there any content? All I got was many blank lines (some sort of obscured html) Robert " 'Freedom' has no meaning of itself. There are always restrictions, be they legal, genetic, or physical. If you don't believe me, t
2005-02-02 by Eric
Why does this email have to be 21K in file size Why don't some of you people post in plain text and not HTML Emails ----- Original Message ----- From: Javier Fiasche To: AVR-Chat@yahoogroups.com Sent: Thursday, February 03, 2005 12:16 AM Subject: RE: [AVR-Chat] Signal System Powe
2005-02-02 by Mark Jordan
You may have problems in the software that runs immediately after RESET. Try some software delay after RESET. Mark Jordan On 2 Feb 2005 at 11:12, Javier Fiasche wrote: > > Thanks, but i also tried with a 10k, 4.7k and 1 k pull ups, and even by connecting reset line > directly to
2005-02-02 by Kathy Quinlan
Paul Maddox wrote: > Leon, > > >>ARM would be an obvous choice, but if it's mostly maths intensive maybe > > you > >>should be looking at DSP type devices - DsPIC perhaps. > > > There are only a few times I'm using floats, but its enough to slow the > MEGA16 down quite a bit. > A
2005-02-02 by Zack Widup
Hi Chuck, Well, it was a thought. As far as the voltage goes, you could probably use any AC voltage greater than about 10 volts or so. I've seen others recommend 24v here. That should work fine with X-10. See the circuit in that PIC app note for getting 5 volts from the AC power.
2005-02-02 by Larry Barello
Try a new CPU. You should be able to float the Reset line and have it run fine. There is an internal 50k pull-up inside the chip. -----Original Message----- From: Paul Maddox Javier, > The thing comes when a tie an external > voltage source to the reset pin (ex. an ISP programmer
2005-02-02 by Javier Fiasche
Thanks, but i also tried with a 10k, 4.7k and 1 k pull ups, and even by connecting reset line directly to VCC and any of that worked The problem seems to be other Thanks again Javier -----Mensaje original----- De: Paul Maddox [mailto:P.Maddox@signal.qinetiq.com] Enviado el: Miérc
2005-02-02 by fusion_netz
Dear Friends, We have some problems related to the Web PSTN board as follows, do go through below:- 1. Dial Up Problem: Once getting connected to the Web PSTN board, we can load the home page of the board into the browser. But, after loading home page, web PSTN's demo program boa
2005-02-02 by Paul Maddox
Javier, > The thing comes when a tie an external > voltage source to the reset pin (ex. an ISP programmer). Everything > seems to work fine, even the reset circuitry, but as soon as i take > out this external reset source, the chip halts. I dont have a clue > about what this coul
2005-02-02 by Paul Maddox
Leon, > ARM would be an obvous choice, but if it's mostly maths intensive maybe you > should be looking at DSP type devices - DsPIC perhaps. There are only a few times I'm using floats, but its enough to slow the MEGA16 down quite a bit. A DSP would be overkill. As for ARM, yeah,
2005-02-02 by Matthew Cook
At 16:07 02/02/2005, you wrote: >(replies to multiple messages interspersed below) ditto > > From: James Hatley > > > > A word of caution ... any voltage used where people might > > contact across it must be properly installed and shielded. > > Any voltage higher than about 30vol
2005-02-02 by Javier Fiasche
I meant 12 VAC, and of course rectifing it at each location. LM2575 is a very good switching regulator, try usin g ono of the design examples on National Semi or the soft "switchers made simple " to design yours, i dont thing ripple would be a problem, besides you dont seem to ne
2005-02-02 by javierfiasche
Folks, i have a really bit problem i cant understand. I am using ATMEGA32L on a 7805 powered board but i cant make it run or even reset. The chip is proprerly powered , i tried a lot of reset circuits, of course including the one provided by atmel, but there is no way it runs by
2005-02-02 by Mike Harrison
On Wed, 2 Feb 2005 10:10:57 -0000, you wrote: > >----- Original Message ----- >From: Paul Maddox >To: AVR-Chat@yahoogroups.com >Sent: Wednesday, February 02, 2005 9:35 AM >Subject: [AVR-Chat] something a bit faster > > >All, > > I'm currently using a MEGA16 at 16Mhz for a project
2005-02-02 by Russell Shaw
Paul Maddox wrote: > All, > > I'm currently using a MEGA16 at 16Mhz for a project, and I'm doing a lot > of floating point calculations (most exponential) and its getting a bit > slow, so I need something with a bit more 'umph'. > I know its kinda off topic, but, what I'm after (
2005-02-02 by Leon Heller
----- Original Message ----- From: Mike Harrison To: AVR-Chat@yahoogroups.com Sent: Wednesday, February 02, 2005 10:19 AM Subject: Re: [AVR-Chat] something a bit faster On Wed, 2 Feb 2005 10:10:57 -0000, you wrote: > >----- Original Message ----- >From: Paul Maddox >To: AVR-Chat@
2005-02-02 by Leon Heller
----- Original Message ----- From: Paul Maddox To: AVR-Chat@yahoogroups.com Sent: Wednesday, February 02, 2005 10:09 AM Subject: Re: [AVR-Chat] something a bit faster Lasse, >Philips LPC2106 Sorry, I forgot to say, I want something a decent speed IO. I got one of these (MB40 eval
2005-02-02 by Lasse Madsen
Forgot to mention that its an ARM and there\u2019s a lot of free compilers available for Arm\u2019s. Regards Lasse From: Lasse Madsen [mailto:lasse.madsen@elektronik.dk] Sent: 2. februar 2005 10:41 To: AVR-Chat@yahoogroups.com Subject: RE: [AVR-Chat] something a bit faster Hi Pau
2005-02-02 by Lasse Madsen
Hi Paul, Philips LPC2106 128KB Internal flash, 64KB internal SRAM, onboard bootloader, 1 full modem interface uart , 1 regular uart , 1 spi interface, 1 true I2C interface and much moreR30; Memory Accelerator Module which makes the processor run 1clock pr instruction real time an
2005-02-02 by Paul Maddox
Leon, > Philips LPC2000 family. Join the group: > > http://groups.yahoo.com/group/lpc2000/ thanks, but see my other email, Been there, done that, anyone want an MB40 with LCD and LPC2106? Paul
2005-02-02 by Leon Heller
----- Original Message ----- From: Paul Maddox To: AVR-Chat@yahoogroups.com Sent: Wednesday, February 02, 2005 9:35 AM Subject: [AVR-Chat] something a bit faster All, I'm currently using a MEGA16 at 16Mhz for a project, and I'm doing a lot of floating point calculations (most exp
2005-02-02 by Paul Maddox
Lasse, >Philips LPC2106 Sorry, I forgot to say, I want something a decent speed IO. I got one of these (MB40 eval kit), I thought great 60Mhz internal clocking, nice fast processor. Problem is, the IO is limited to 3.8Mhz, Sorry I should've also said I needed around 8Mhz IO. Also
2005-02-02 by Paul Maddox
All, I'm currently using a MEGA16 at 16Mhz for a project, and I'm doing a lot of floating point calculations (most exponential) and its getting a bit slow, so I need something with a bit more 'umph'. I know its kinda off topic, but, what I'm after (I think) is something 16Bit and
2005-02-02 by Chuck Hackett
(replies to multiple messages interspersed below) > From: Javier Fiasche > > Why dont you try 12 VAC (or less) and a switching regulator > at each location (try using lm2575) Thanks Javier, I just checked the data sheet on the LM2575 series. Looks like just the thing I need. (BTW
2005-02-02 by ºa¥úªº¸¨¤é
hi, i am a Avr newbie. i have a project about AD convert, in this project i store the compare value to eeprom, and fetch the value if program initial. this is my code section about read eeprom data. --------------------------------------- .ESEG TABLE: .db 0x01,0x57,0x01,0x1D,0x01
2005-02-02 by Kathy Quinlan
After having read all the posts,first some list mom duties ;) Remember that in MOST countries it is on offence to use un approved equipment direct on a telco line, SOME contries (the US I think but Dave can correct me if I am wrong as I am not from the USA) allow you to use a lin
2005-02-02 by John Samperi
At 05:12 AM 2/02/2005, you wrote: >As I see it, I'll have to bury two cables along the track, one for power, and >one for the RS-485 signal bus (either 2-wire or 4-wire with signal ground to >control common-mode voltage differences). Can you use the tracks as a ground wire ...jus
2005-02-02 by David Kelly
On Feb 1, 2005, at 1:51 PM, Hamid reza Kabiri wrote: > I looking for mega64 lib file for protel 2.7 Where I can find it? Is it all that hard to make one yourself in Protel? You ought to verify every library element you use in any case. If for no other reason than to verify that y
2005-02-01 by Robert Adsett
At 12:12 PM 2/1/05 -0600, Chuck Hackett wrote: >2) Same as #1 but use a higher DC voltage (48?) to reduce the current and >hence >reduce the voltage drop. How does one get from 48vdc to 3-5 vdc without huge >losses. Cost is a factor here. I realize that I could use a PWM >regulat
2005-02-01 by Hamid reza Kabiri
Hello I looking for mega64 lib file for protel 2.7 Where I can find it? thanks
2005-02-01 by James Hatley
Hello Mr. Chuck Hackett, A word of caution ... any voltage used where people might contact across it must be properly installed and shielded. Any voltage higher than about 30volts is considered potentially lethal. So some careful design work is required to study all of the possib
2005-02-01 by Zack Widup
Just a thought ... you can maybe use an implementation of X-10 technology and power your devices at the same time. But you'd have to use AC to power your devices. There is a whole set of documents at the Microchip site about implementing X-10 with PIC's, including one on powering
2005-02-01 by Javier Fiasche
Why dont you try 12 VAC (or less) and a switching regulator at each location (try using lm2575) Regards Javier Atentamente Javier A. Fiasche BLB Ingenieria Aplicada S.R.L. T.E. 4381-5884 -----Mensaje original----- De: Chuck Hackett [mailto:egroupscdh@WhiteTrout.net] Enviado el: M
2005-02-01 by Chuck Hackett
I'm looking at developing a signaling application for 1.5" scale ride-on railroads (a hobby of mine). It involves a long signal bus (up to a couple of thousand feet) based on RS-485. I'll also need to run power to operate ultra-bright LEDs as well as intermittently drive a couple
2005-02-01 by Dave VanHorn
At 11:53 AM 2/1/2005, Franco wrote: >Hi! >To sense the logic line is very simple with a MCu or a couple of Smith >Trigger buffers. VBG.. It seems simple at first. I have seen this done, in systems that were not isolated from the line. a 10M divider and zener works acceptably well
2005-02-01 by Franco
Hi! To sense the logic line is very simple with a MCu or a couple of Smith Trigger buffers. You only need know first the Vcc values for each state of the line, 48Vdc is ready to use less than this is in use 15-4Vcc, and more than 48V is ringing. You can sense too if you are direc
2005-02-01 by Larry Barello
No, I don't. In your case, since you are sharing one of the PWM lines with the programmer, you do want to pull the enable line down while programming. -----Original Message----- From: ethan@bufbotics.org Thank you Larry. Those articles give me some good insight. Now I feel just c
2005-02-01 by Stefan Trethan
On Tue, 01 Feb 2005 08:59:02 -0500, Dave VanHorn wrote: > > POTS is an acronym for "Plain Old Telephone Service", it's official. that one i knew... ST
2005-02-01 by Dave VanHorn
At 08:49 AM 2/1/2005, Stefan Trethan wrote: >On Tue, 01 Feb 2005 08:19:19 -0500, Dave VanHorn >wrote: > > > > >> > > > Plenty of sort-of-working schematics there. > > >Well, i only mentioned it because i built the phone in use indicator, >which worked ok. >I guess it depends on t
2005-02-01 by Stefan Trethan
On Tue, 01 Feb 2005 08:19:19 -0500, Dave VanHorn wrote: > >> > Plenty of sort-of-working schematics there. Well, i only mentioned it because i built the phone in use indicator, which worked ok. I guess it depends on the location if a "sort of" well designed circuit works or not (
2005-02-01 by Dave VanHorn
> >As for your problem, i don't know what SLIC means Subscriber line interface circuit, which is not the right end. The telco uses a SLIC to provide POTS to your instrument. >but i know there are >working circuits out there to detect ring and off hook, which can be built >with di
2005-02-01 by Stefan Trethan
On Tue, 1 Feb 2005 03:49:56 -0800 (PST), Shibu Krishnan wrote: > > hi folks > pls respond to my query. i hv posted 4 quiries so far. > but no reply. i am beginner in using MCUs > i am doing a project on IVRS. am in the initial step. > i need some SLIC for ring detection and off h
2005-02-01 by Shibu Krishnan
hi folks pls respond to my query. i hv posted 4 quiries so far. but no reply. i am beginner in using MCUs i am doing a project on IVRS. am in the initial step. i need some SLIC for ring detection and off hook. can anybody suggest the best and affordable ic which can be interfaced
2005-02-01 by Robert Adsett
At 10:05 PM 1/31/05 -0500, ethan@bufbotics.org wrote: >I saw in the articles how you described the current consumed at 50% >dutycycle (motor stopped). Is this ok? Or should the enable pin be >disabled when you want to idle? It depends on the motor (the PWM, frequency, the voltage
2005-02-01 by ethan@bufbotics.org
Thank you Larry. Those articles give me some good insight. Now I feel just confident enough to be a danger to my little robot friend :-) I think I'm going to go right in and try Locked Antiphase. Once I get it working in my own robot, I may have to ask a few questions since hopef
2005-01-31 by Larry Barello
There are several ways to drive a load with an H-bridge. What I proposed was something called "Locked Antiphase". I wrote a paper: www.barello.net/Papers/Motion_Control that describes the two common drive techniques. If you want to stick with Sign-Magnitude drive just use one the
2005-01-31 by Stefan Trethan
On Mon, 31 Jan 2005 12:13:18 -0800, Larry Barello wrote: > > This is easy to do and produces optimal code on GCC (e.g. sbi/cbi when > appropriate): > typedef union// Delclare a union that allows bit & byte access > { > unsigned char byte;// This is a byte for 8 bit access > struc
2005-01-31 by Larry Barello
This is easy to do and produces optimal code on GCC (e.g. sbi/cbi when appropriate): typedef union // Delclare a union that allows bit & byte access { unsigned char byte; // This is a byte for 8 bit access struct { unsigned char P0:1; // These are bit-fields unsigned char P1:1; u
2005-01-31 by Dave VanHorn
At 11:18 AM 1/31/2005, Kathy Quinlan wrote: >Dave VanHorn wrote: > > > > >>Why can you not use your RH server and use SSH if it is not local :) > > > > > > Mostly because nof it's stubborn non-existence. > >It broke again ? No more.. I host through 123ehost now. I wouldn't mind s
2005-01-31 by Stefan Trethan
On Mon, 31 Jan 2005 15:44:06 -0000, Leon Heller wrote: > In most languages, including C, you can't manipulate individual bits > directly in the same way as other data types like ints, chars, etc. High > level languages don't usually know about anything smaller than a byte. > You