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2004-01-27 by sven_32@yahoo.com
first I open the com port... Open "com2:19200,8,n,1" For Binary As #1 then I recieve a command to change the settings Disable Interrupts Close #1 Open "com2:9600,8,E,1" For Binary As #1 Enable Interrupts there is no change in the actual settings of the com port.... Please help Ho
2004-01-27 by Jack Valmadre
Hi, I've been running a few simple LED chaser and PWM programs on my AT90S8535 and I just went to switch from my old Windows 98 computer to my Windows XP machine, when I noticed that the RESET pin wasn't working. No matter what I connect to it, it continues to act as if its conne
2004-01-26 by Dave VanHorn
At 03:52 PM 1/26/2004 +0000, sven_32@yahoo.com wrote: >in the beginning of the program Are we supposed to guess what you're referring to here?
2004-01-26 by Kathy Quinlan
> -----Original Message----- > From: Wagner Lipnharski [mailto:wagner@ustr.net] > Sent: Tuesday, 27 January 2004 1:31 AM > To: AVR-Chat@yahoogroups.com > Subject: Re: [AVR-Chat] Driving FET. > > > Kathy Quinlan wrote: > > How about some of the dedicated driver chips like the IRL
2004-01-26 by Wagner Lipnharski
Kathy Quinlan wrote: > How about some of the dedicated driver chips like the IRL 6130 > > Regards, > > Kat. I would love to take a peek in such unit, but can't find it anywhere in the net, mostly at irf.com. Don't you hate when a manufacturer website don't give you the numeric or
2004-01-26 by sven_32@yahoo.com
in the beginning of the program Open "com2:19200,8,n,1" For Binary As #1 further down: *****read new settings from the eeprom Disable Interrupts Close #1 Open "com2:9600,8,E,1" For Binary As #1 Enable Interrupts * * there is no change in the actual settings of the com port.... Pl
2004-01-26 by Dave VanHorn
At 03:24 PM 1/26/2004 +0800, Kathy Quinlan wrote: >How about some of the dedicated driver chips like the IRL 6130 Pricey, but they work nicely. Pay careful attention to bypassing and layout. In my charger, I'm using such a driver. The T26 pumps out 500kHz PWM, and the driver snap
2004-01-26 by Steven Chang-Lin Yu
I just got my LM60 analog temperature sensor, however something is quite strange, I have use a 9V battery and an L7805 5v regulator for the input to the sensor, while in room temperature, the output from the sensor is 0.63V, doesn’t seems to be correct by reading at the datasheet
2004-01-26 by Kathy Quinlan
How about some of the dedicated driver chips like the IRL 6130 Regards, Kat. -----Original Message----- From: Wagner Lipnharski [mailto:wagner@ustr.net] Sent: Monday, 26 January 2004 1:31 AM To: AVR-Chat@yahoogroups.com Subject: [AVR-Chat] Driving FET. Hi, I am building a 4.2V @
2004-01-25 by Wagner Lipnharski
erikc wrote: > > /* Why are you returning the LM339 output to +12V when > everything else is +5V? LM339 is happy with +5V. > One other suggestion: Place a 120R resistor in series with > the FET gate. This suppresses oscillations. */ Some FET requires a little bit more "push" than
2004-01-25 by Stefan Wimmer
Hi AVRfreaks, The AVR OrCAD library on my AVR pages got a new update (http://www.geocities.com/capecanaveral/6368 - click on "electronics/AVR based"). And while I was on it, I had a friend convert it for Protel 99SE. Hope someone finds it useful. As always: Please let me know if
2004-01-25 by erikc
/* my comments like this. */ ----- Original Message ----- From: Wagner Lipnharski To: Sent: Sunday, January 25, 2004 17:30 Subject: [AVR-Chat] Driving FET. Hi, I am building a 4.2V @ 6A stepper motor (6 wires - unipolar) driver, using the IRL530N or IRLZ24 power N FET. I actually
2004-01-25 by Wagner Lipnharski
Hi, I am building a 4.2V @ 6A stepper motor (6 wires - unipolar) driver, using the IRL530N or IRLZ24 power N FET. I actually using the Alegro 2398 (twin bridge bipolar driver) dedicated chip for small motors, that chip doesn't stand such 6A current. As a protection scheme, I am d
2004-01-24 by Dave VanHorn
At 08:02 PM 1/24/2004 +0800, Kathy Quinlan wrote: >Thanks for the pointer, I just rang a local battery supplier, to buy a 3 >cell AAA NiCad Pack in qty's of 100 I would be looking at ~$14 (far to >much) but I can get a single cell Lion Battery with 2AH rating for $6 in >100 qty m
2004-01-24 by William Nachefski
I just posted under files a prototype schematic for my tachometer circuit. Take a look and tell me what you think. I am new to AVRs so let me know if I made any mistakes, or if there are changes that will work better. My needs for this circuit are as follows: Using a laser or led
2004-01-24 by Dave VanHorn
> >One of the problems with maintaining rechargeables is the "memory" >effect that's certainly evident in NiCd. Memory, refers specifically to the voltage droop that happens near a point of previously repeated discharge. Long term overcharge causes charge depression in NIMH, but
2004-01-24 by Kathy Quinlan
Thanks for the pointer, I just rang a local battery supplier, to buy a 3 cell AAA NiCad Pack in qty's of 100 I would be looking at ~$14 (far to much) but I can get a single cell Lion Battery with 2AH rating for $6 in 100 qty more like it lol. He said the price difference between
2004-01-24 by Bernd Felsche
On Fri, Jan 23, 2004 at 07:45:28PM -0500, Dave VanHorn wrote: > While we're sort of on this subject, let me relay a little > research into memory effect on NIMH. > http://www.dvanhorn.org/NIMH/Index.php > It's about halfway down the page. Interesting. One of the problems with mai
2004-01-24 by Dave VanHorn
While we're sort of on this subject, let me relay a little research into memory effect on NIMH. http://www.dvanhorn.org/NIMH/Index.php It's about halfway down the page.
2004-01-24 by Alexandre Guimaraes
Hi, Kat I have a product that I produce for more than 9 years and I have been using NiCd's all this time. I tried many different brands and ended up using Saft high temperature batteries. They are specified to work at continuous trickle charge and really last much longer than oth
2004-01-23 by Mike Murphree
Dave Miller said: > > There is also rechargeable alkalines from Energizer. These can easily > be bought (at least here in the US) at your local store with a decent > electronics section. These have saved my household a lot of money with > 3-kids with gameboys, CD players, etc...
2004-01-23 by Dave Miller
There is also rechargeable alkalines from Energizer. These can easily be bought (at least here in the US) at your local store with a decent electronics section. These have saved my household a lot of money with 3-kids with gameboys, CD players, etc... Thanks, Dave Miller > -----O
2004-01-23 by Dave VanHorn
Alkalines might be more reliable here.
2004-01-23 by Kathy Quinlan
> -----Original Message----- > From: Dave VanHorn [mailto:dvanhorn@cedar.net] > Sent: Friday, 23 January 2004 9:53 PM > To: AVR-Chat@yahoogroups.com; AVR CHAT YAHOO > Subject: Re: [AVR-Chat] NICAD charging cheap and long term. > > > At 09:28 PM 1/23/2004 +0800, Kathy Quinlan wrot
2004-01-23 by Dave VanHorn
At 09:28 PM 1/23/2004 +0800, Kathy Quinlan wrote: >Hi All, > >Need some ideas on charging nicads to get the most life out of them in >low duty cycle pulsed current load and as long life as possible > >Situation is similar to a smoke alarm. > >Any ideas ? Not the best suited batte
2004-01-23 by Dave VanHorn
> >Are you doing the hot shoe shuffle before setting the WDT? > >ldi r16,(1 out wdtcr,r16 >ldi r16,(1 out wdtcr,r16 Yes. I'm doing that. In the M128, I get the timing I expect.
2004-01-23 by Kathy Quinlan
Hi All, Need some ideas on charging nicads to get the most life out of them in low duty cycle pulsed current load and as long life as possible Situation is similar to a smoke alarm. Any ideas ? The product will have an AVR something like a Tiny15, but I do not want to go to the e
2004-01-23 by samperi@ampertronics.com.au
At 09:28 PM 22/01/04 -0500, you wrote: > >Finally, the WDT in the M8 appears to be resetting me at 500mS intervals, >even though it's set for 2S, according to the data sheet. >(0x0F in WDTCR) Are you doing the hot shoe shuffle before setting the WDT? ldi r16,(1
2004-01-23 by Dave VanHorn
Well... It wasn't the code.. The new simulator is broken with the M8 SPI (and others?) If you load a byte into SPDR after setting the SPI up as a master, then wait for the SPIF bit to go high indicating the byte has been sent, you'll wait forever. If you don't use the SPI2X featu
2004-01-22 by Al Welch
Not so much with RS232 but a lot in the old days with the printer ports and dongles. We used to program security dongles from Vault and they would only program with some printer port cards and not others. Once again the levels differ by brands. If you Dell has a USB port you may
2004-01-22 by Bruce Parham
Mike Harrison wrote: > > You can get away with 5V for RS232, so if your levels ate -5.8 and +6 I would be highly surprised if > this was the problem, unless your driver IC has delay or risetime issues at lower supply voltages. > Are the RS232 chips you are using actually designed
2004-01-22 by Al Welch
Look at the MAX3228 instead of the MAX232 for lower supply. According to Maxim... The MAX3228/MAX3229 are +2.5V to +5.5V powered EIA/TIA-232 and V.28/V.24 communications interfaces with low power requirements, and high data-rate capabilities, in a chip-scale package (UCSP). The
2004-01-22 by Kathy Quinlan
Well all the rooms in the house now have dual cat 5 cables wired to a central patch panel in the roof (crawl space for the Americans), The Phone system is up there too (an NEC NEAX D3 or Telstra System 120 as the AU people know them) The servers are all up there now too :o) I am
2004-01-22 by samperi@ampertronics.com.au
At 02:25 PM 21/01/04 -0800, you wrote: >Today I adjusted the board voltage down to 3.3V and the PC quit receiving. The AVR is still running just fine >but the comm Tx level drops enough that the PC no longer receives. A scope shows the Tx levels are -6.0 and +7.2 >when running at
2004-01-22 by Mike Harrison
On Wed, 21 Jan 2004 14:25:06 -0800, you wrote: >Okay, I give. How do I talk to a PC using 3.3V? (A bit OT but...) > >I have a short program running on a M128 that puts out a time of day string on one of the comm ports >every second. The AVR side is an STK500/501 set with the comm
2004-01-21 by Bruce Parham
Okay, I give. How do I talk to a PC using 3.3V? (A bit OT but...) I have a short program running on a M128 that puts out a time of day string on one of the comm ports every second. The AVR side is an STK500/501 set with the comm using the #2 comm translator/connector on the 501.
2004-01-21 by Emerson Santos
Anyone have a AVR ASM or C rotines to DS1302 ??? []'s
2004-01-21 by Erik Loose
Kevin, I've had I2C running on the '163, '128, and '32 for a while now. I'd be happy to answer any specific questions about it. Email me offline. Erik Loose erik@gtran.com -----Original Message----- From: K.Mellott [mailto:klmellott@hotmail.com] Sent: Wednesday, January 21, 2004
2004-01-21 by Rogier Schouten
Hi, Atmel has some appnotes on doing I2C. But beware, there is a mistake in one of these programs. It is a long time ago that I used them, but there is a line with the comment "while ... or ... ", and the code does "while ... AND ... ". Perhaps they have corrected their error. Th
2004-01-21 by K.Mellott
Hi, Anyone done any I2C stuff on the ATmega16 or 163? I'm going to interface to a virtual reality headset to extract tracking data and its in an I2C format. Wanted to use the Atmega16 or 163. The datasheets show some info on how to do it but I was wondering if anyone had any prac
2004-01-20 by Steven Chang-Lin Yu
Thanks for that, I see what I need to do now!!! -----Original Message----- From: Dave Hylands [mailto:dhylands@broadcom.com] Sent: Tuesday, 20 January 2004 3:50 PM To: avrclub@yahoogroups.com; AVR-GCC; AVR-Chat Subject: [AVR-Chat] RE: [AVR club] STK500 Demo file rewritten in C, a
2004-01-20 by Dave Hylands
The ASM sample msu be doing a rotate, rather than a shift (the AVR may use slightly different terminology - I'm more familiar with 68k assembler). To do the same thing in C, you need to manually do the rotate, unless you're going to use inline assembler. Performing the operation
2004-01-20 by Steven Chang-Lin Yu
Guys, I have almost complete the file of the STK500 demo file shows in the manual of the STK500 and preload on the 8515 came with the STK500. The only problem now is the two shift right and shift left function!!! With the original asm demo, the shift left and shift right shift th
2004-01-19 by David VanHorn
At 06:54 PM 1/19/2004 +0000, sven_32@yahoo.com wrote: >Please send me some help. The only hard part, is to make sure that any byte that was transmitting, has finished, before you change the settings. There isn't any way to know on the receive side, so I don't think there's much y
2004-01-19 by sven_32@yahoo.com
Please send me some help. Thanks Sven
2004-01-19 by Brian Dotson
Try "Teach Yourself C in 24 Hours" by Tony Zhang. Very helpful. It's published by Sams. I bought it in a major chain bookstore, and it's available at Amazon. As a graduate EE with limited programming in my formal education, I empathisize. But fret not, you should do fine. At its
2004-01-19 by Rogier Schouten
Hi, I only know assembler, so this may not be what you are looking for: You should enable the timer interrupt in TIMSK (don't know which bit right now) and all interrupts using SEI. Rogier ----- Original Message ----- From: Adrian To: AVR-Chat@yahoogroups.com Sent: Monday, Januar
2004-01-19 by Adrian
Hi, I'm struggling to collate the info in the 2313 datasheet and the include files for winavr distribution of GCC. I want to learn to use the timers & interrupts. I started off with a polled timer test (writing code from memory so may not be precise) to add interruopt driven late
2004-01-19 by samperi@ampertronics.com.au
At 11:47 AM 17/01/04 -0500, you wrote: > >That's what make the world so splendid. For some, the Mega48 is just a mere >result of natural technology development, for others it could be saving >their necks. The Mega48 is just the missing step in the middle of the >option list. Now
2004-01-19 by bukongahelas0815
hi jim, i had the same problem as you 5 years ago when i started AVR with STK200 starter kit and 8515 (the old one) yC. I only know assembler and would like to learn C. Perhaps we can change knowledge. my projekts: - disco light for parties and small bands on stage - analog digit