Yahoo Groups archive
Messages
Page 253 of 307 · 15341 messages matched
2004-12-07 by Jose Fuentes
It would be interesting to post a message like this in a PIC or Motorola related forum. Programmers that use PICs like the reduced instruction set (some pics have only 33 instructions), but this is important only if you write assembly code. I compared Atmega16 and PIC18F452 and t
2004-12-07 by Zack Widup
--- In AVR-Chat@yahoogroups.com, NGUYEN NGA VIET wrote: > Anyone can tell me about the advantages and dissadvantages of AVRs ? > Or, why did you choose an AVR for your jobs ? In what kinds of projects, AVRs are the best choice ? > Thank you. > I think it's been fairly well covere
2004-12-07 by Jesper Hansen
Manchester coding is not really necessary. The Nordic VLSI chips can be direcly connected a microprocessor UART. I've used the nRF401 in several projects that way. It offers 19200 kbps transfer speed at decent distances. One project was a timing system for car races where the mea
2004-12-07 by Svenn Dahlstrøm
If you are not using zigbee or bluetooth, you nead to add something like manchester coding ontop of your RS485 protokoll. See : http://en.wikipedia.org/wiki/Manchester_code Svenn > > At 10:52 PM 6/12/04 -0000, you wrote: >> >> >>Is the multipoint protocol available for studying i
2004-12-07 by Joe Tsang
I am afraid that analog RF module (2.4GHz) can only transmit analog signal. Maybe a 2.4GHz digital RF module that could do the job of transmitting audio signal together with data ? I also have a pre-liminary digital RF module trsansmitting signal at 1.5Mbps data rate. Info as bel
2004-12-07 by Paul Maddox
John, > As long as you are a happy customer...we are also happy :-)) yeah, very happy :-) Paul
2004-12-07 by John Samperi
At 05:49 PM 6/12/04 -0800, you wrote: > Hi, anyone is interested in 2.4GHz analog type RF modules ? & >audio-video. This would be ideal if some small ammount of data could also be sent with the audio (no video required). Regards John Samperi **************************************
2004-12-07 by John Samperi
At 10:52 PM 6/12/04 -0000, you wrote: > > >Is the multipoint protocol available for studying it ? I guess you could just use an half duplex, RS485 type protocol. Simply replace the wires with radio modules....well of course if it works let us know, I may need to do something simi
2004-12-07 by John Samperi
At 08:52 AM 6/12/04 -0000, you wrote: > >John, >yes, it works fine.. >Thats why I don't understand it. As long as you are a happy customer...we are also happy :-)) Regards John Samperi ****************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Pla
2004-12-07 by Joe Tsang
Hi, anyone is interested in 2.4GHz analog type RF modules ? 2 types: audio-only & audio-video. (note: Europe's #1 or #2 electronic giant will put in their new models. Asia's top-5 audio makers using in their wireless speakers). (note: already CE approved) audio-only module price:
2004-12-06 by jeronimoavelar
Is the multipoint protocol available for studying it ? Jeronimo --- In AVR-Chat@yahoogroups.com, "Qboll" wrote: > Hi, > > I use this one with home made Multipoint protocol for my home > automation: > http://www.lprs.co.uk/pdf_directory/23861049807229.pdf > > Nice and simple to us
2004-12-06 by Qboll
Hi, I use this one with home made Multipoint protocol for my home automation: http://www.lprs.co.uk/pdf_directory/23861049807229.pdf Nice and simple to use. Only negative is the delay of ca. 25ms between send (master) and receive (slaves). Greetings Pascal -----Original Message--
2004-12-06 by jeronimoavelar
Thanks for the links , the hardware part is ok but I don´t have experience with the protocol stuff that is needed for this project . Is there any tutorial or ready-to-use code for the wireless protocol that i can use ? Jeronimo. --- In AVR-Chat@yahoogroups.com, James Russo wrote:
2004-12-06 by James Russo
Here are some companies to check out: RFM (RF monolithics) http://www.rfm.com/ ChipCon http://www.chipcon.com/ and LINX technologies. http://www.linxtechnologies.com/ The LINX modules are very easy to use. Most of these you will need to design your own media access control to pre
2004-12-06 by jeronimoavelar
Hi List , I am with a request of a client to construct 20 small terminals (keypad + lcd 16x2 ) using microcontrollers conected to a central server via a low-cost wireless link (simultaneous use). What kind of multinode radio link do you suggest to use? Is there any one using zigb
2004-12-06 by Graham Davies
If we're going to talk about MIPs for different MCUs, we should make some kind of effort to talk about the same metric and not just rely on the manufacturer's specification. This is often just the clock frequency divided by the number of cycles needed by the smallest instruction.
2004-12-06 by Mark Jordan
On 6 Dec 2004 at 11:20, Paul Maddox wrote: > > Paul, > > > Try a 16MHz MSP430. :-) The 21xx families are 16 bit and run at 16MHz. > > Hmm, not enough code space (8K is the biggest on their parametric table), > they also only list them as 8MIPs. > > Paul > I have ported some MSP43
2004-12-06 by Tony Vandiver
Another advantage of AVRs is better noise immunity than some other processors. I had a Motorola 68HC908GP32 in a dip package on a board that would reset with a single 4kV near field discharge. I put an ATMega128 on a dip adapter board and pinned it out to work on the same board -
2004-12-06 by Paul Curtis
Paul, > > Try a 16MHz MSP430. :-) The 21xx families are 16 bit and > run at 16MHz. > > Hmm, not enough code space (8K is the biggest on their > parametric table), they also only list them as 8MIPs. 8 MIPS max at 8MHz, 16 MIPS at 16MHz. For sure there will be, for instance, a 249
2004-12-06 by NGUYEN NGA VIET
Anyone can tell me about the advantages and dissadvantages of AVRs ? Or, why did you choose an AVR for your jobs ? In what kinds of projects, AVRs are the best choice ? Thank you. vnn ALL-NEW Yahoo! Messenger - all new features - even more fun!
2004-12-06 by Paul Maddox
Leon, > Yes, that is annoying. I was puzzled by it when I tried to drive a DAC as > fast as possible. Philips have an explanation on the LPC2000 Yahoo group; > IIRC it's nothing to do with them but inherent in the ARM design. Its a big shame, it means I can't use the LPC for what
2004-12-06 by Paul Maddox
Paul, > Try a 16MHz MSP430. :-) The 21xx families are 16 bit and run at 16MHz. Hmm, not enough code space (8K is the biggest on their parametric table), they also only list them as 8MIPs. Paul
2004-12-06 by Leon Heller
----- Original Message ----- From: Paul Maddox To: AVR-Chat@yahoogroups.com Sent: Monday, December 06, 2004 11:04 AM Subject: Re: [AVR-Chat] advantages and dissadvantages of AVRs. Leon, > Then there are the Philips LPC2000 ARM chips - cheap, fast and 32 bit. carefull... I bought
2004-12-06 by Paul Curtis
Paul, > > Or, why did you choose an AVR for your jobs ? In what kinds of > > projects, > AVRs are the best choice ? > > For me, I choose them for several reasons > 1) They are Fast, most instructions are 1 clock per > instruction, not 4 clocks like certain other micros. > 2) Good
2004-12-06 by Paul Maddox
Leon, > Then there are the Philips LPC2000 ARM chips - cheap, fast and 32 bit. carefull... I bought one of those kits hoping to use it, but sadly the IO is limited to a max frequency of around 3Mhz, even if the internal core is running at 60Mhz, its to do with the way Philips int
2004-12-06 by Paul Maddox
VNN, > Or, why did you choose an AVR for your jobs ? In what kinds of projects, AVRs are the best choice ? For me, I choose them for several reasons 1) They are Fast, most instructions are 1 clock per instruction, not 4 clocks like certain other micros. 2) Good support for C 3) G
2004-12-06 by Leon Heller
----- Original Message ----- From: NGUYEN NGA VIET To: AVR-Chat@yahoogroups.com Sent: Monday, December 06, 2004 10:27 AM Subject: [AVR-Chat] advantages and dissadvantages of AVRs. Anyone can tell me about the advantages and dissadvantages of AVRs ? Or, why did you choose an AVR f
2004-12-06 by Paul Maddox
Dean, > Have a look at how Dieter is making his Nixie clocks ... > http://www.tube-tester.com/sites/nixie/v300/chronotronix-v300.htm yep, nice, another suggestion to consider... Paul
2004-12-06 by Paul Maddox
Dave, > Doesn't look entirely sane to me.. me neither, but does what I want, fetchs a BYTE from a lookuptable in memory (on a page boundry I should add). > Not sure what step is, but we are now pointing at high(Array*2)+Step yep, Start of my table (array) and a certain number of
2004-12-06 by Paul Maddox
John, > But DOES IT WORK? :-) The flash is in 2 byte lots (16 bit) that is the reason > you need to multiply by 2 to get to the address. yes, it works fine.. Thats why I don't understand it. I understand abotu things being stored as 'words' in the AVR, but I don't see why I only
2004-12-06 by Kathy Quinlan
kelvin kooger wrote: > My suggestion is that all job vacancies should be excluded from the > group discussion which is not avr related. I agree :) As he did not bother to reply to my question and he also spammed many groups, he is now banned. Regards, Kat. -- --------------------
2004-12-06 by kelvin kooger
My suggestion is that all job vacancies should be excluded from the group discussion which is not avr related. excellent excellent wrote:1. CA Service Desk Analyst : candidate should have 3 years of relevant experience with experience to Package administration, user account manag
2004-12-05 by Dave VanHorn
At 05:25 PM 12/5/2004, John Samperi wrote: >At 05:05 PM 5/12/04 -0500, you wrote: > >Has nobody but me run into this issue? > > > >Sorry David....I really love to have another "issue" to >solve :-)) but as i only have the ICE200 to work with >I haven't used any of those opcodes y
2004-12-05 by John Samperi
At 05:05 PM 5/12/04 -0500, you wrote: >Has nobody but me run into this issue? > Sorry David....I really love to have another "issue" to solve :-)) but as i only have the ICE200 to work with I haven't used any of those opcodes yet as they are not supported in the devices that the
2004-12-05 by Dave VanHorn
Has nobody but me run into this issue?
2004-12-05 by Dave VanHorn
They sprayed it through multiple groups, vaguely uP related.
2004-12-05 by Kathy Quinlan
Leon Heller wrote: > ----- Original Message ----- > From: Kathy Quinlan > To: AVR-Chat@yahoogroups.com > Sent: Sunday, December 05, 2004 2:40 PM > Subject: Re: [AVR-Chat] New Job Openings in MNC ain bangalore > > > excellent excellent wrote: > > >>1. CA Service Desk Analyst : can
2004-12-05 by Kathy Quinlan
excellent excellent wrote: > 1. CA Service Desk Analyst : candidate should have 3 years of relevant > experience with experience to Package administration, user account > management, configuration, performance tuning etc. Experience in > Unicenter is an added advantage. > > 2. DB
2004-12-05 by Leon Heller
----- Original Message ----- From: Kathy Quinlan To: AVR-Chat@yahoogroups.com Sent: Sunday, December 05, 2004 2:40 PM Subject: Re: [AVR-Chat] New Job Openings in MNC ain bangalore excellent excellent wrote: > 1. CA Service Desk Analyst : candidate should have 3 years of relevant
2004-12-05 by excellent excellent
1. CA Service Desk Analyst : candidate should have 3 years of relevant experience with experience to Package administration, user account management, configuration, performance tuning etc. Experience in Unicenter is an added advantage. 2. DB Lead/Mgr : The total work experience s
2004-12-05 by excellent excellent
Bhagavad Gita on 10 Audio CDs Rs1500 -------------------------------------------------------------------------------- Now you can listen to the ancient sanskrit chants of Bhagavad Gita, sung in classical melodies by noted devotional singer Sri Vidyabhushana. Listen to all 700 ver
2004-12-04 by David D. Rea
Thanks for the suggestions - I'm not yet comfortable with inline assembly under C, so I doubt bit-banging is going to be feasible. But I neglected to mention that this application doesn't need serial functionality in production, only in development - so I'll probably dust off one
2004-12-04 by Bruce Parham
Good god, Nixie tubes!?!? Can you still buy those things? I remember designing a time code generator for our tracking stations that had a bank of nine tubes in the display. That was 35 years ago! What next, counters using ac cross coupled triodes (tubes)? Bruce > > Have a look at
2004-12-04 by alan_probandt
I considered using the USI of the Tiny26 as a UART but abandoned the idea as too complex. It would be better to use simple 'bit-banging' code for a 'softUART' that is already written. Atmel's ap note on using the USI as a UART mentioned loading the start bit only into the USI ser
2004-12-04 by fnatmed
--- In AVR-Chat@yahoogroups.com, "Paul Maddox" wrote: > Dear all, > > Is it possible to somehow program say 40 or 50 AVRs all at the same time? > Or somehow automate it? > Also is it possible to do this with Surface mount versions before they're > inserted into the PCB? > > I've
2004-12-04 by Geert De Pecker
Andrew, Sami, Dave, Thansk for the help. Works ok now. On to timer interrupts... Geert Andrew Lim wrote: > Geert, > > U need to initialise the stack pointer. > > Add these few lines after ur MAIN. > > ;============================================== > Main: > > ldi Temp, Low(Ramen
2004-12-04 by Andrew Lim
Geert, U need to initialise the stack pointer. Add these few lines after ur MAIN. ;============================================== Main: ldi Temp, Low(Ramend) out SPL, Temp ldi Temp, High(Ramend) out SPH, Temp ;============================================== These 4 lines of code w
2004-12-04 by Leon Heller
----- Original Message ----- From: David D. Rea To: avr-chat@yahoogroups.com Sent: Saturday, December 04, 2004 5:06 AM Subject: [AVR-Chat] ATTiny26: Using USI as UART // Issue Hi Everyone- First post here, so I humbly beg your pardon if this topic has been discussed previously. I
2004-12-04 by David D. Rea
Hi Everyone- First post here, so I humbly beg your pardon if this topic has been discussed previously. I did a quick search through the message archives and didn't turn anything up. I'm working with the following setup: - ATTiny26 @ 1MHz - WinAVR for C development - ATAVRISP I'm
2004-12-04 by John Samperi
At 06:19 PM 3/12/04 -0800, you wrote: > >How about this bit of optimized code? I believe the following properly >emulates your original code. > Thanks Larry I'm doing some work on a new PCB (the old one had a PIC in it..yuck...) so that all my display types run a Mega8, I will tr