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2004-09-29 by Bruce Parham
How about a pullup on the reset pin? (Does the programmer use an open drain driver on reset?) I didn't see any other parts on the pcb layout. Bruce Dave VanHorn wrote: > > At 05:36 PM 9/29/2004, John Samperi wrote: > > >At 04:29 PM 29/09/04 -0500, you wrote: > >> > >>First, check
2004-09-29 by Dave VanHorn
At 05:36 PM 9/29/2004, John Samperi wrote: >At 04:29 PM 29/09/04 -0500, you wrote: >> >>First, check that you're connecting the data to the DI and DO pins, >>NOT MOSI and MISO. > >??? For the Mega8? :-)) It is still Mosi and Miso. Duh.. :) 8 not 128.. Anyway, the rest holds.
2004-09-29 by John Samperi
At 04:29 PM 29/09/04 -0500, you wrote: > >First, check that you're connecting the data to the DI and DO pins, >NOT MOSI and MISO. ??? For the Mega8? :-)) It is still Mosi and Miso. Regards John Samperi ****************************************************** Ampertronics Pty. Ltd.
2004-09-29 by Dave VanHorn
At 04:23 PM 9/29/2004, Daniel Boyer wrote: >I am trying to program a mega8 chip (actually I have tried 3 different >ones) and I keep getting errors entering programing mode. I am using >the STK500 board and AVR Studio version 4.09. The chips are the flat >quad package and I think
2004-09-29 by Daniel Boyer
I am trying to program a mega8 chip (actually I have tried 3 different ones) and I keep getting errors entering programing mode. I am using the STK500 board and AVR Studio version 4.09. The chips are the flat quad package and I think that is where my problem is arising since I mu
2004-09-29 by MuRaT KaRaDeNiZ
Hi, Atmel AVR microcontrollers can link the adc mux output to one of the internal comparator input pins. So by quickly switching the adc channel you can apply different signals to the comparator. May be you can facilitate this feature in your circuit. Hope this helps Murat Karade
2004-09-29 by Tomek
THANK YOU GUYS! I checked parts that you suggested but what I want to do is to use the full bandwidth of USB. The chips you proposed are actually emulating USB, LINX is good but 3MBit is far too slow for me. I was thinking rather of 12MBit (Full-speed USB), if I want to send data
2004-09-28 by Phillip Vogel
Piece of cake, and the Linx part has the FTDI part (and all the glue stuff) inside. All you need is the Linx module and a connector. Hook up Tx data & Rx data and you're in business. > -----Original Message----- > From: Daniel Boyer [mailto:dpboyer@dpicts.com] > Sent: Monday, Sep
2004-09-28 by David Greenberg
Does anyone know where I can get a "slave" side I2C driver in assembler for an avr (I am thinking of the tiny13 in particular) for free? I am working on a project with another person to create an inexpensive digital servo with PID control, and before I started trying to create an
2004-09-28 by mikkohelin
--- In AVR-Chat@yahoogroups.com, Dave VanHorn wrote: > At 03:51 PM 9/24/2004, mikkohelin wrote: > > >I implemented a flash burner for AT29C256 using XMODEM protocol with > >8515 and STK200. Xmodem (checksum) uses 128 byte page size while the > >Atmel flash eeprom use 64 byte page
2004-09-28 by Stuart Whelan
Actually, I did what the others before me did and failed to actually read your message. Sorry. :) This the kind of thing you want? (not tested) unsigned int Result; // Grab the first 6 pins states on port b and put it into result. Result = PINB & 0x3f; // Move the current value o
2004-09-28 by Stuart Whelan
I am guessing that by a binary number you mean an output in binary format, like '01010101'? Kind Regards, Stuart Whelan Technical Director Pacific Simulators LTD DDI: +64 3 3778866 Mobile: +64 27 2828074 Recursion: See Recursion. > -----Original Message----- > From: jim_rinaudo [
2004-09-28 by Brian Dean
Hi, This is a quick announcement of the MAVRIC-IIB controller board. The MAVRIC-IIB is the new and improved revision of our popular MAVRIC-II controller: http://www.bdmicro.com/mavric-iib/ The MAVRIC-IIB builds on the great features of the MAVRIC-II, but also includes several oft
2004-09-28 by Daniel Boyer
I don't know of any specific commands because each port is stored as a binary number so there really is no need to convert it. So if you use two ports you will have a low byte and a high byte, one will be port a and the other port b. Ie: Mov R20, PINA Mov R21, PINB Daniel > -----
2004-09-28 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, "Stuart Whelan" wrote: > I am guessing that by a binary number you mean an output in binary > format, like '01010101'? That's what I thought too. PIN STATE state 1 1 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0 0 8 0 1 255 1 So just changing pin state woul
2004-09-28 by upand_at_them
Huh? Each port IS a binary number. Just read the port. Mike --- In AVR-Chat@yahoogroups.com, "jim_rinaudo" wrote: > OK, I surrender. I tried all the searches I can think of and I need > to find the command that takes all the input states of a port and > makes it a single binary n
2004-09-28 by Dingo
I don't know but here is a link http://www.myplace.nu/avr/dram/index.htm and this one http://elm-chan.org/docs/avr/avrdma_e.html ----- Original Message ----- From: alan_probandt To: AVR-Chat@yahoogroups.com Sent: Tuesday, September 28, 2004 8:56 AM Subject: [AVR-Chat] using Dynam
2004-09-28 by jim_rinaudo
OK, I surrender. I tried all the searches I can think of and I need to find the command that takes all the input states of a port and makes it a single binary number. I looked in my codevision help section and no help there either. The input is 12 bits arranged in groups of three
2004-09-27 by acemailone
I'm trying to use a L2014 with AT90S8515 and BASCOM-AVR. This is the code I try to run: Config Lcdpin = Pin , Db4 = Portc.4 , Db5 = Portc.5 , Db6 = Portc.6 , Db7 = Portc.7 , E = Portc.1 , Rs = Portc.0 Config Lcd = 20 * 4 Cls Lcd "Text" End When I run this the LCD is displaying al
2004-09-27 by alan_probandt
Hello, Does anyone have any experience using simple and cheap dynamic RAM chips with the 20 or greater pin size AVR? I'm thinking of an audio digital delay (echo...echo...echo...) that would use a 64K by 1 or 256K by 1 dynamic RAM chip. As I understand it, you could put the addre
2004-09-27 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "Dave Mucha" wrote: > Is there a uC that would offer > 6 internal comparitors ? Assuming comparators will do the job, you could take a look at the Cypress PSoC. The Cypress Web site is seriously broken right now, though, so don't waste too much ti
2004-09-27 by Daniel Boyer
Linx technologies (www.linx also make a chip (~$15 from digikey) that does ez usb interface... The webpage is: http://www.linxtechnologies.com/interface.php?section=products&category= interface_modules&subcategory=qs_series I have not used it yet (ordered one that should arrive t
2004-09-27 by Dave Mucha
Hi all, I have a project that would need either 6 ADC inputs of 12 bit, or use 6 comparitors. I preferr comparitors for their speed and digital value. Is there a uC that would offer 6 internal comparitors ? Dave
2004-09-27 by Alex Gibson
Dingo wrote: ftdi chips, usb to rs232 http://www.ftdichip.com/ cheap easy to use In windows / linux or mac just acts as a com port. Alex > Pity they don't have prices on their site. > > Here is an Australian distributor who sells them for for around US$40 > > http://www.dontronic
2004-09-27 by Dingo
Pity they don't have prices on their site. Here is an Australian distributor who sells them for for around US$40 http://www.dontronics.com/usb_232.html Nigel ----- Original Message ----- From: Alex Gibson To: AVR-Chat@yahoogroups.com Sent: Monday, September 27, 2004 4:42 PM Subje
2004-09-27 by Alex Gibson
Tomek wrote: > Hi all! > > I'm just looking for some stand-alone USB controller to work with > my AVR. I found SL811HS from Cypress and it seems pretty simple to > wire-up but I found little information on configuring, protocols > etc. Does anybody have some experience with this
2004-09-26 by Tomek
Hi all! I'm just looking for some stand-alone USB controller to work with my AVR. I found SL811HS from Cypress and it seems pretty simple to wire-up but I found little information on configuring, protocols etc. Does anybody have some experience with this (some other) chip? How do
2004-09-26 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "stevech" wrote: > will Digikey sell in low volume > orders, like 3ea or 5 ea? Would > this be true of some but not all > items? Digi-Key sell just about everything in their catalog in ones. (The exceptions are things like washers where you have t
2004-09-25 by stevech
will Digikey sell in low volume orders, like 3ea or 5 ea? Would this be true of some but not all items? -----Original Message----- From: Dave VanHorn [mailto:dvanhorn@dvanhorn.org] Sent: Friday, September 24, 2004 8:36 PM To: AVR-Chat@yahoogroups.com; AVR-Chat@yahoogroups.com Sub
2004-09-25 by Robert Adsett
At 07:31 PM 9/24/04 -0700, you wrote: >any particular part number for the switching regulator, 5V at about 1A >from TI that can replace the 7805? thanks... 1 Amp with a 7-13V drop, not much wonder you are getting warm. That would be a 28 to 52 C rise from the heatsink to ambient
2004-09-25 by Bernd Felsche
On Saturday 25 September 2004 10:31, jay marante wrote: [top-post fixed and excessive quoting deleted!] > Bernd Felsche wrote: >> Dave VanHorn wrote: >> > At 12:23 PM 9/24/2004, jay marante wrote: >> > >i don't know the rating of my heatsink. anyway, my final board is >> > >alrea
2004-09-25 by Dave VanHorn
At 09:31 PM 9/24/2004, jay marante wrote: >any particular part number for the switching regulator, 5V at about 1A from TI that can replace the 7805? thanks... Digikey carries some integrated switchers that will work as a drop-in for the 7805. They are pricey, at about $14-$19 IIR
2004-09-25 by jay marante
any particular part number for the switching regulator, 5V at about 1A from TI that can replace the 7805? thanks... Bernd Felsche wrote:On Saturday 25 September 2004 01:32, Dave VanHorn wrote: > At 12:23 PM 9/24/2004, jay marante wrote: > >i don't know the rating of my heatsink.
2004-09-25 by Bernd Felsche
On Saturday 25 September 2004 01:32, Dave VanHorn wrote: > At 12:23 PM 9/24/2004, jay marante wrote: > >i don't know the rating of my heatsink. anyway, my final board is > >already done. i was just curious why such problem and maybe i can > >work on it without changing my board.
2004-09-24 by Dave VanHorn
At 03:51 PM 9/24/2004, mikkohelin wrote: >I implemented a flash burner for AT29C256 using XMODEM protocol with >8515 and STK200. Xmodem (checksum) uses 128 byte page size while the >Atmel flash eeprom use 64 byte page size. So I use for loop (~40000 >iterations, null body) for de
2004-09-24 by mikkohelin
I implemented a flash burner for AT29C256 using XMODEM protocol with 8515 and STK200. Xmodem (checksum) uses 128 byte page size while the Atmel flash eeprom use 64 byte page size. So I use for loop (~40000 iterations, null body) for delay after writing the data into flash. Howeve
2004-09-24 by Dave VanHorn
At 12:23 PM 9/24/2004, jay marante wrote: >thanks for the reply guys... > >ill trim down the input voltage to 12V. but i'll try to work it down to even a smaller input voltage. > >i don't know the rating of my heatsink. anyway, my final board is already done. i was just curious w
2004-09-24 by jay marante
thanks for the reply guys... ill trim down the input voltage to 12V. but i'll try to work it down to even a smaller input voltage. i don't know the rating of my heatsink. anyway, my final board is already done. i was just curious why such problem and maybe i can work on it withou
2004-09-24 by James Wagner
Oooops - I slipped on the power part. It should have been computed from 6V, not 5! On Fri, 24 Sep 2004 12:08:28 -0400 Robert Adsett wrote: > > > > > At 11:24 AM 9/24/04 -0400, you wrote: > >It says that it MUST operate down to 4.80V. So, you > should > >be safe with a 5V supply.
2004-09-24 by Robert Adsett
At 11:24 AM 9/24/04 -0400, you wrote: >It says that it MUST operate down to 4.80V. So, you should >be safe with a 5V supply. It says that it will work up to >130% of the rated power dissipation on the coil. Lets go >through the arithmatic: > >Coil is 100 ohms. Rated voltage is 5V
2004-09-24 by James Wagner
It says that it MUST operate down to 4.80V. So, you should be safe with a 5V supply. It says that it will work up to 130% of the rated power dissipation on the coil. Lets go through the arithmatic: Coil is 100 ohms. Rated voltage is 5V. Power is V * I and V = I * R so power can a
2004-09-24 by Graham Davies
--- In AVR-Chat@yahoogroups.com, Peter Gargano wrote: > ... the extra-extra costs, if you > don't reside (or have set up your > bank account) to be in the USA ... OK, now I understand. As a seller in the USA, I am not setting up my customers for a rip-off by using PayPal. Sellers
2004-09-24 by Robert Adsett
At 04:43 PM 9/23/04 -0700, you wrote: >attached here is the datasheet of the relay i used (6V). i don't think its >possible to supply the coil with greater than 6V. or maybe i just >misunderstood the datasheet. OK, a pull-in voltage of 4.5V so if you are having trouble pulling th
2004-09-23 by Dingo
My experience with Paypal is that the transaction for currency conversion is good but the fee charged to use paypal could be better. But all in all it is a pretty cheap and secure way to sell AVRs (trying to keep thread on topic :) ) Still there are plenty of credit card merchant
2004-09-23 by jay marante
thanks guys... attached here is the datasheet of the relay i used (6V). i don't think its possible to supply the coil with greater than 6V. or maybe i just misunderstood the datasheet. i can't find a 5V relay in our local store so i have to live with that 6V relay. also, maybe th
2004-09-23 by Peter Gargano
Replying to John Samperi: I have as much chance of rubbing shoulders with Mark Latham as I do of seeing Little Johnny Howard walking out of The Lodge (do I have to spell out how small a chance that is?). http://www.pm.gov.au/aus_in_focus/kids/residences.html http://www.theage.com
2004-09-23 by Ken Holt
My experience as a small supplier from a website has been generally favorable, mostly because some trust is first established between the buyer and the seller. We usually use a personal check, sent through the regular mail, made out in US dollars, if from another country. Althoug
2004-09-23 by John Samperi
At 03:39 PM 23/09/04 -0000, you wrote: >--- In AVR-Chat@yahoogroups.com, "Dingo" wrote: > > It has also been my experience that you get a very fair >exchange rate with a credit card. Also a debit (ATM) card. > As I understand from the Dontronics website is that, in some countries
2004-09-23 by Robert Adsett
At 08:39 AM 9/23/04 -0700, you wrote: >i have my project on its final stage, the problem is that the 7805 voltage >regulator heats up the heat sink too much. is this ok? i have inputs >between 12V - 18V. it is connected to a 6V SPDT reed relay switch, which >in turn, facilitates
2004-09-23 by Dave VanHorn
> >Your relay problems are PROBABLY the result of trying to >run a 6V relay at 5V. That is very typical of the behavior. >Can you replace it with a real 5V relay? Or, why not a 12V >relay. That would many are probably rated for voltages up >to 18V. Pull-in and drop-out voltages a