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2004-10-23 by Mark Jordan
Hi, I'm having a weird problem with a Mega8 running on the internal clock oscilator at 1 MHz. The internal Power-on Reset seems not to be working. Every time I power up the circuit, I have to manually reset the Mega8. The power at the Vcc pin rises from 0 to +5V in 4mS. The RESET
2004-10-23 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, Bill Velek wrote: > snipped stuff about Google's 'Gmail' and needing an invitation, etc. > > I'm curious whether 'Gmail' has anything that sets it apart from, let's > say, 'Hotmail'. I've had a couple of Hotmail accounts over the years > that I pr
2004-10-23 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, "fnatmed" wrote: > > --- In AVR-Chat@yahoogroups.com, "Chuck Hackett" > wrote: > > > From: Dave Mucha > > > .... > > > Maybe if others need one, you can pass on the favor ? > > > > I might want one if I knew what it was :-) > > > > Can someone enl
2004-10-23 by Chuck Hackett
> From: Dave Mucha > .... > Maybe if others need one, you can pass on the favor ? I might want one if I knew what it was :-) Can someone enlighten me? Cheers, Chuck Hackett "Good judgment comes from experience, experience comes from bad judgment" 7.5" gauge Union Pacific Northern
2004-10-23 by Chuck Hackett
> From: Dave Mucha > > .... > > > If you are protecting an analogue line, why not make it into a > > > digital signal and then use an opto or even fiber optic ? > > > > In this particular case I think it would be overkill but I grant you that it's > > one approach. > > > > Cheers
2004-10-23 by Michael Haisley
oops he probably got a few to pass on...I sent one as well On Sat, 23 Oct 2004 06:40:49 -0000, Dave Mucha wrote: > > --- In AVR-Chat@yahoogroups.com, ahmed adel farid > wrote: > > Hi all > > if anyone have a Gmail invitation, please i need one > > my mail is ahmedadelfarid@y... >
2004-10-23 by John Allen
Hi gang.. Just a quickie to let ya know so far, so good..!! I got the Buttery to sit on Graham's carrier board. It is a well done PCB Graham..!! (Butterfly guy's gota get this thing) http://www.ecrostech.com Idea for next PCB rev: FTDI FT8U232 USB chip..!! Yea baby! Steal the pow
2004-10-23 by fnatmed
--- In AVR-Chat@yahoogroups.com, "Chuck Hackett" wrote: > > From: Dave Mucha > > .... > > Maybe if others need one, you can pass on the favor ? > > I might want one if I knew what it was :-) > > Can someone enlighten me? It's the new email service from Google. Lots of nice featur
2004-10-23 by Kathy Quinlan
Dave Mucha wrote: > > --- In AVR-Chat@yahoogroups.com, "Chuck Hackett" > wrote: > >>>From: Dave Mucha >>> >>>>Since I'm protecting an analog signal line here I assume optos > > are > >>inappropriate >> >>>>(at least I've only seen ones suitable for digital, as opposed > > to anal
2004-10-23 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, ahmed adel farid wrote: > Hi all > if anyone have a Gmail invitation, please i need one > my mail is ahmedadelfarid@y... > thanks a lot > > > --------------------------------- > Do you Yahoo!? > vote.yahoo.com - Register online to vote today! DONE
2004-10-23 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, "Chuck Hackett" wrote: > > From: Dave Mucha > > > > > > Since I'm protecting an analog signal line here I assume optos are > inappropriate > > > (at least I've only seen ones suitable for digital, as opposed to analog, > > > links). > > > > > > If
2004-10-23 by Andrew Lim
Hi Graham, I'll consider using it when I'm switching to Atmega16. But I need to get my Atmega8535 running. Thanks a lot dude ! :) N2 Graham Davies wrote: --- In AVR-Chat@yahoogroups.com, Andrew Lim wrote: > The moment I try to write ... > the error message "Device Missing > or Un
2004-10-23 by Andrew Lim
Hi Andy, I have feed in a 1.8432MHz Xtal. connecting the Xtal to Xtal1 and Xtal2. But still have the same problem. Still cant revive my "dead" uP. N2 "Clark, Andy" wrote: > > The moment I try to write ... Try feeding a 1MHz+ clock into the xtal input, this has dug me out of a hol
2004-10-23 by Chuck Hackett
> From: Dave Mucha > > > > Since I'm protecting an analog signal line here I assume optos are inappropriate > > (at least I've only seen ones suitable for digital, as opposed to analog, > > links). > > > If you are protecting an analogue line, why not make it into > a digital sig
2004-10-22 by Doug Locke
Thanks gentlemen for your thoughts, the situation is simpler than first presented as actually both the the camera and avr will be part of a stand alone system and so can share a common ground. I had considered using SN75156B's and this would seem to be a reasonable option followi
2004-10-22 by John Samperi
At 02:53 PM 22/10/04 +1000, you wrote: > Which ones? I love the $33 ones - worth the price IMO ----- I think they are the ones, based on the Nordic chip (NRF401?) Regards John Samperi ****************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Plac
2004-10-22 by ahmed adel farid
Hi all if anyone have a Gmail invitation, please i need one my mail is ahmedadelfarid@yahoo.com thanks a lot Do you Yahoo!? vote.yahoo.com - Register online to vote today!
2004-10-22 by Dave VanHorn
At 01:15 PM 10/22/2004, Doug Locke wrote: >Hello, wonder if someone could point me in the right direction regarding an >old line scan camera that I am attempting to control using an AVR. The >camera supply is +5v and +15v. Basic point is that the data rate and line >rate signals
2004-10-22 by Doug Locke
Hello, wonder if someone could point me in the right direction regarding an old line scan camera that I am attempting to control using an AVR. The camera supply is +5v and +15v. Basic point is that the data rate and line rate signals are just specified as differential line driver
2004-10-22 by James Wagner
RS422 driver ought to do it. If its old, it probably has a 75176 or variant. They are a somewhat "heavier" load than most modern receivers. If the line length is fairly short (say, up to 25' or so), you don't need to terminate it quite so carefully. There is no real compatibility
2004-10-22 by Dingo
Which ones? I love the $33 ones - worth the price IMO ----- Original Message ----- From: John Samperi To: AVR-Chat@yahoogroups.com Sent: Friday, October 22, 2004 1:23 PM Subject: Re: [AVR-Chat] Re: Remote site questions At 08:02 AM 22/10/04 +0800, you wrote: > >On Friday 22 Octob
2004-10-22 by Dave Mucha
> > Since I'm protecting an analog signal line here I assume optos are inappropriate > (at least I've only seen ones suitable for digital, as opposed to analog, > links). If you are protecting an analogue line, why not make it into a digital signal and then use an opto or even fi
2004-10-22 by John Samperi
At 08:02 AM 22/10/04 +0800, you wrote: > >On Friday 22 October 2004 06:51, Dingo wrote: >> If you only need to send data 400 feet you could look to 433MHz >> radio modules. (They are similar to Garage door remotes, but >> designed for serial data). > I have just ordered 2 TX/RX m
2004-10-22 by Bernd Felsche
On Friday 22 October 2004 06:51, Dingo wrote: > If you only need to send data 400 feet you could look to 433MHz > radio modules. (They are similar to Garage door remotes, but > designed for serial data). > > I'm thinking a microcontroller at each end of the 400 feet. One to > the
2004-10-21 by Dingo
If you only need to send data 400 feet you could look to 433MHz radio modules. (They are similar to Garage door remotes, but designed for serial data). I'm thinking a microcontroller at each end of the 400 feet. One to the device and the other into the serial or ethernet port. Th
2004-10-21 by Robert Adsett
At 02:49 PM 10/21/04 -0400, you wrote: >At 01:09 PM 10/21/04 -0500, you wrote: > >Since I'm protecting an analog signal line here I assume optos are > >inappropriate > >(at least I've only seen ones suitable for digital, as opposed to analog, > >links). I assume that the Transorb
2004-10-21 by Robert Adsett
At 01:09 PM 10/21/04 -0500, you wrote: > > .... > > Transorbs on power and "local" wiring. Optical isolation on > > signal inputs with long wires. > >While searching the net for info on Transorbs I found this on Lightning >protection that may be of interest to others: >http://www
2004-10-21 by Chuck Hackett
Thanks to all for you comments on my remote site question. Thanks to Dingo in particular for providing part numbers. See more comments interspersed below: > From: Dave Mucha > > .... > I use the 12.5mm solder leg verson for my RTC's, or the 22mm > for larger projects like data lo
2004-10-21 by Graham Davies
It has been reported that the ECROS Technology STK500 JTAG Adapter does not work with the STK500/ATmega162 combination. This is because the STK500 adapter was designed for the ATmega16 and ATmega32. The ATmega162 pins out the JTAG interface on different port bits. This does not a
2004-10-21 by Clark, Andy
> > The moment I try to write ... Try feeding a 1MHz+ clock into the xtal input, this has dug me out of a hole a couple of times. AndyC http://pages.zoom.co.uk/andyc
2004-10-21 by Graham Davies
--- In AVR-Chat@yahoogroups.com, Andrew Lim wrote: > The moment I try to write ... > the error message "Device Missing > or Unknown Device (-24)" pops up ... Is it possible that this is the classic misconfigured oscillator problem? Do you actually have your external crystal wired
2004-10-21 by KEN HUNT
I had a similar problem and found that I had to click the "program" button (ctrl-p) rather than hit the "write" icon + On another occasion I had the device go missing and rebooting my pc did nothing - I needed to totally power it off to recover. Don't know if you've tried this bu
2004-10-21 by Andrew Lim
Hi there, I'm trying to set my uP ATmega8535 to external Xtal mode using the Configuration and Security Bit in PonyProg. The moment I try to write to my up by clicking the "Write" button, then the error message "Device Missing or Unknown Device (-24)" pops up. After this, I cant
2004-10-21 by lancy lilly
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2004-10-21 by Dingo
I think the cost of UV parts was they need to be made in a ceramic package - that's what I read at least. Flash love plastic so it id cheaper ----- Original Message ----- From: Zack Widup To: AVR-Chat@yahoogroups.com Sent: Thursday, October 21, 2004 1:56 PM Subject: Re: [AVR-Chat
2004-10-21 by Zack Widup
I used mostly the UV-erasable PIC's when I got started with them. They have little windows. I used a couple OTP devices once I got the bugs worked out in the EPROM versions. Now if I use a PIC it's a flash-memory device. They're about the same cost or even cheaper than the EPROM
2004-10-21 by Andrew Lim
Hi All, Thanks for the great input. I'm sorry that I left out one important information. I'm looking for non-rechargeable Lithium battery which Sonnenschein has it. Sorry about that. N2 Dave Mucha wrote: --- In AVR-Chat@yahoogroups.com, "alan_probandt" wrote: > > > Digi-Key lists
2004-10-21 by Bernd Felsche
On Thursday 21 October 2004 05:42, Chuck Hackett wrote: > Clock: For data logging timestamp purposes do folks use an > external xtal and onboard timer channel (assume Atmega16) or > should one use an external RTC? Tradeoffs? I'd like accuracy on > the order of 10 seconds per mont
2004-10-21 by Zhao Wei
sorry guys. i've to post this here. i'm mostly a lurker on this list and i enjoyed most of the discussion. but right now i've to unsubscribe this list for awhile. i've send to AVR-Chat-unsubscribe@yahoogroups.com two unsubscribe requests. everytime i received a confirmation reque
2004-10-21 by JChavez@soboce.com
Hi, I also use PonyProg with AVRs however I used PICs just a couple of times. Did you see the datashets? some PICs are OTP. Javier abbas raftari con fecha 20/10/2004 07:39:17 a.m. Por favor, responda a AVR-Chat@yahoogroups.com Destinatarios: avr-chat@yahoogroups.com CC: araftary1
2004-10-21 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, Zhao Wei wrote: > sorry guys. i've to post this here. i'm mostly a lurker on this list > and i enjoyed most of the discussion. but right now i've to > unsubscribe this list for awhile. > > i've send to AVR-Chat-unsubscribe@yahoogroups.com two unsu
2004-10-21 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, abbas raftari wrote: > Hi; > I work with Ponyprog program for AVR & PIC programing . > I made a SI-prog programer and PIC programer adapter for PIC programing. > I can program (read & write) many PIC series for exampel 16F84A but I can't > program
2004-10-20 by Dave Mucha
> Backup Power: 110 VAC power is normally available but I'd like to provide backup > power to maintain the RTC clock function mentioned above. What's the > easiest/cheapest way to do this? One thought was to just purchase the smallest > battery UPS I can find. Another thought was
2004-10-20 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, "alan_probandt" wrote: > > > Digi-Key lists D as 6500 mah > > > > If you use a 4 D size batteries you can get over 4 volts > > > Please note that rechargable D batteries might be C batteries in > larger containers and selling for a large premium a
2004-10-20 by Dingo
Firstly here is an Australian bloke who has done similar stuff http://quozl.linux.orgau/?category=Pic Look to the "Emu fat" project (covers lightning, communication to remote frezzer site, etc) Also has pump controllers there too. Secondly for timestamping I'd suggest a DS1307 RT
2004-10-20 by Chuck Hackett
Hi, I'm new to the group and have just received my STK-500 and I'm ready to start my first application (one-off) which is data logging, control and monitoring of the irrigation pump & filter supplying our small orange grove in Tampa, Florida. Background: I'm a retired software de
2004-10-20 by emailbucky
hey guys, i want to create a clock that keeps the time over a 24hr period, below is the code i have written USING AVR GCC, whenver the timer lies between 22 and 23, it should write a value to the port, but its not doing this, can anybody help? SIGNAL(SIG_OVERFLOW0) /* signal hand
2004-10-20 by alan_probandt
> Digi-Key lists D as 6500 mah > > If you use a 4 D size batteries you can get over 4 volts Please note that rechargable D batteries might be C batteries in larger containers and selling for a large premium above rechargable C batteries. This kind of nonsense was typical with NiC
2004-10-20 by James Wagner
Many LiIon batteries are spec'd to drop to 50% capacity after 300 charge cycles. Jim On Wed, 20 Oct 2004 17:11:55 -0000 "Dave Mucha" wrote: > > > > > > > --- In AVR-Chat@yahoogroups.com, Andrew Lim > wrote: > > > > Hi Everyone, > > > > > > > > I'm looking for a good lithium batte
2004-10-20 by James Wagner
A single cell LiIon battery is about 4.1V fully charged and has used a very large percentage of its capacity by the time it drops to 3V. Your circuit needs to be able to monitor the voltage and shut down or provide other warnings when the battery voltage goes too low. Most cells