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2012-08-20 by Philippe Habib
Are you saying that I'd do better with the capacitor/resistor combo and a FET than by using a FET to amplify the 0-5V signal out of my DAC? Cost wise, its not a big difference either way. Going with a DAC, I'd use a tiny24 to drive a SPI DAC, to get 4 ch of PWM, I'd have to get a
2012-08-20 by Jim Wagner
Some of the brick LED drivers I have used have pretty "stiff" control inputs. BuckPuck is one. Not much current at the high voltage end, but quite a bit (several milliamperes) at the low voltage end. Do not assume they are anything like a high impedance. A "single transistor" is
2012-08-20 by Philippe Habib
Yes, I knew about that. My plan is to have a 0-5V DAC and a transistor with a gain of 2 as a buffer to drive the LED driver's input. Thanks for taking the time to point out some stuff I might not have been thinking of. ----- Original Message ----- From: "Jim Wagner" To: AVR-Chat@
2012-08-20 by Jim Wagner
You won't get 10V from a 5V DAC! It will need a 10V reference. Jim Wagner ----- Original Message ----- From: "Philippe Habib" To: AVR-Chat@yahoogroups.com Cc: AVR-Chat@yahoogroups.com Sent: Monday, August 20, 2012 3:19:50 PM Subject: Re: [AVR-Chat] Re: Using a capacitor to conver
2012-08-20 by Jim Wagner
The OP could drive a switch FET (2N7000, for example) from the AVR and powered from +10V or more. A couple of resistors and a cap will do it. And, you will get far better linearity than though any op-amp. Jim ----- Original Message ----- From: "Cat C" To: "AVR-Chat@yahoogroups.co
2012-08-20 by Cat C
Either way you'll likely still need an amplifier (neither AVRs nor DACs won't likely give you 10V output). So you could go with the PWM and a buffer/amplifier. Cat ---------------------------------------- > To: AVR-Chat@yahoogroups.com > CC: AVR-Chat@yahoogroups.com > From: phabi
2012-08-20 by Jim Wagner
And, further, you will NOT get a 10V signal from a 5V logic PWM. From 5V logic,it will vary from (approximately) 0 to (approximately) 5V. There are ways to get 10V out, but you need some kind of supply that is 10V or higher to do it. Second, it will take more than just a capacito
2012-08-20 by Philippe Habib
Thanks Don, In my case I'm supposed to drive a commercial LED driver's input 0-10VDC control voltage. Since the input impedance of the LED driver bricks will no doubt vary between manufacturers and probably even models from the same manufacturer it sounds like I'll be safer by us
2012-08-20 by Philippe Habib
I need to generate a 0-10V signal to control some dimmable LED drivers. I know I could do it with a DAC, but I think I might be able to save a part by generating a PWM signal and smoothing it out with a capacitor to make a voltage out of it. My problem is, I don't know how to pro
2012-08-20 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, Philippe Habib wrote: > Can someone provide some guidance about how to size the capacitor > and what type of capacitor is best suited for this type of thing? You need a resistor in addition to the capacitor. The values for the R and C to get good
2012-08-20 by Tim Mitchell
----Original Message---- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of bonzadog Sent: 20 August 2012 09:48 To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] Re: fast controller > I think if someone wants a high speed system (100Mhz) why > not as
2012-08-20 by bonzadog
I think if someone wants a high speed system (100Mhz) why not assume that he knows why instead of forcing him to explain something that is not relevant to his search. Try an ARM processor they offer large memory and high speed. BD Am 19.08.2012 20:12, schrieb englsprogeny1: > > T
2012-08-19 by bobgardner@aol.com
-----Original Message----- From: englsprogeny1 To: AVR-Chat Sent: Sun, Aug 19, 2012 2:14 am Subject: [AVR-Chat] Re: AVR Studio breakpoints Note: I'm using AVR Studio 4.18 I used the wizard to make the project (no external makefiles) The app does stop at the 'phantom breakpoint' -
2012-08-19 by englsprogeny1
The ATMega128 & ATMega8 go up to 16MHz (per the datasheets). Why do you need high speed? High speed isn't always better. Do you care about power usage and heat? Tell me what drives your '100MHz Requirement'? --- In AVR-Chat@yahoogroups.com, farshid alipour wrote: > > Hi > > I nee
2012-08-19 by David Kelly
On Aug 19, 2012, at 1:44 AM, John Samperi wrote: > At 03:59 PM 19/08/2012, you wrote: >> Below I try to set a breakpoint but AVR Studio moves this breakpoint down: > > Try the disassembly view, it may not be "optimised out" but it may > be optimised the way the compiler thinks be
2012-08-19 by farshid alipour
Hi I need a fast controller with good performance in noisy places it's main clock should be near 100Mhz. I'll be grateful if anybody can help me. best regards [Non-text portions of this message have been removed]
2012-08-19 by John Samperi
At 03:59 PM 19/08/2012, you wrote: >Below I try to set a breakpoint but AVR Studio moves this breakpoint down: Try the disassembly view, it may not be "optimised out" but it may be optimised the way the compiler thinks best. It's a common thing that happens when you do source lev
2012-08-19 by englsprogeny1
Note: I'm using AVR Studio 4.18 I used the wizard to make the project (no external makefiles) The app does stop at the 'phantom breakpoint' --- In AVR-Chat@yahoogroups.com, "englsprogeny1" wrote: > > As some of you know, I'm migrating to include AVR studio in my projects, instead
2012-08-19 by englsprogeny1
As some of you know, I'm migrating to include AVR studio in my projects, instead of just what comes with WinAVR Below I try to set a breakpoint but AVR Studio moves this breakpoint down: I set the breakpoint at the line: PORTA = inputButtons; but AVR Studio moves this breakpoint
2012-08-09 by Bob Paddock
> There was talk of a newer version of winAvr but I guess someone > knocked that on the head. There are some newer snap-shots, such as GCC 4.7.1 here: http://sourceforge.net/projects/mobilechessboar/files/avr-gcc%20snapshots%20(Win32)/ Should get you support for the newer XMega p
2012-08-08 by John Samperi
At 10:00 PM 8/08/2012, you wrote: >This probably means that Atmel are dropping support for AVR Studio 4.x in >the toolchain to force people to move to Atmel Studio 6. Correct, as it has been mentioned many times at AVRFreaks. :-) There was talk of a newer version of winAvr but I
2012-08-08 by bayramdavies
--- In AVR-Chat@yahoogroups.com, David Kelly wrote: > ... sadly the XPLAIN A3BU is about 1 > step newer than 4.18 supports ... Maybe I have good news for you, then. I have used the XMEGA-A3BU Xplained with AVR Studio 4.19 and AVR Toolchain 3.3.1. I have met no problems, in spite
2012-08-08 by David Kelly
On Aug 8, 2012, at 9:03 AM, Steven Hodge wrote: > I just timed loading Studio 6 on my quad 3.0 Ghz box. 23 seconds, > acceptable to me. Maybe it's because I'm running Windows 7 x64 on it? Could be. 32 bit XP Pro SP-latest here. The HD I/O on that machine seems to be 10x slower th
2012-08-08 by Steven Hodge
I just timed loading Studio 6 on my quad 3.0 Ghz box. 23 seconds, acceptable to me. Maybe it's because I'm running Windows 7 x64 on it? Steve From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of David Kelly Sent: Wednesday, August 08, 2012 6:21 AM To: AVR
2012-08-08 by David Kelly
On Aug 8, 2012, at 7:00 AM, bayramdavies wrote: > I have used Studio 6 and hate it, so this is not good news for me. Studio 6 is typical Microsoft bloatware and slows everything to a crawl. The problem is its written in .Net, so its not native code. Apple ran PowerPC code faster
2012-08-08 by bayramdavies
This is an informative post, I'm pretty certain of my results and I don't really have a question. AVR Studio 4.19 does not work with AVR Toolchain 3.4.0. It crashes at Start Debugging. Everything is fine with Toolchain 3.3.1. This probably means that Atmel are dropping support fo
2012-08-08 by Alex Shepherd
> I found precompiled code (.hex) for ATmega microcontroller but I'd like to > get "C language" code please but I was not able to fnd it. > thanks Maybe this is what you're looking for - an Arduino library with example sketches: https://github.com/rayshobby/opensprinkler/tree/mas
2012-08-08 by Riccardo Castellani
I found precompiled code (.hex) for ATmega microcontroller but I'd like to get "C language" code please but I was not able to fnd it. thanks >GitHub", which points to: >https://github.com/rayshobby/opensprinkler >The project was done using arduino, and instructions for building t
2012-08-06 by Dave Hylands
Hi Riccardo, On Mon, Aug 6, 2012 at 12:26 PM, Riccardo Castellani wrote: > Can you indicate me if on OpenSprinkler project site , I can find source code (in C language) to programme the AVR microcontroller ? This page: http://rayshobby.net/?page_id=160 has a link "Download in Git
2012-08-06 by Riccardo Castellani
Can you indicate me if on OpenSprinkler project site , I can find source code (in C language) to programme the AVR microcontroller ? [Non-text portions of this message have been removed]
2012-08-05 by H. Carl Ott
On Sat, Aug 4, 2012 at 8:57 PM, englsprogeny1 wrote: > ** > > > Hi guys, > > I want to start including audio in my projects a bit more. So far I've > designed using MP3 modules that I purchased on EBAY. I now want to design > using the AVR's 16 bit PWM to create audio. > > I've f
2012-08-05 by Steven Holder
On 05/08/2012 01:57, englsprogeny1 wrote: > > Hi guys, > > I want to start including audio in my projects a bit more. So far I've > designed using MP3 modules that I purchased on EBAY. I now want to > design using the AVR's 16 bit PWM to create audio. > > I've found a project tha
2012-08-05 by Jim Wagner
Register structure is similar and consistent, but not identical among devices. Within a single family (example Mega48/88/168/328) it will be, with very few exceptions, identical. Not so when you make larger jumps. Another example, AVRs with a single UART used to name the data reg
2012-08-04 by englsprogeny1
Hi guys, I want to start including audio in my projects a bit more. So far I've designed using MP3 modules that I purchased on EBAY. I now want to design using the AVR's 16 bit PWM to create audio. I've found a project that does this: http://elm-chan.org/works/sd20p/report.html W
2012-08-01 by John Samperi
At 07:27 AM 2/08/2012, you wrote: >all this talk about rasperry pi may not be relevant ..or PI in the sky... Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA Tel. (02) 9674-
2012-08-01 by Jim Wagner
What we are forgetting here, is that the OP asked for something that would handle smtp because the "server in a box" supported smtp. However, in looking at the specs, the smtp that this device supports is as a CLIENT. On the other hand, it also supports html, which should be very
2012-08-01 by Alex Shepherd
> How many people here, being used to bare metal programming, would be > comfortable programming the Raspberry?Sure, it's hard to make an > embedded web site anyway; but for most non-networked things? > Sorry this is a bit off-topic but it's a question to the people I care to hea
2012-08-01 by Tim McDonough
On 7/31/2012 9:34 AM, Leon Heller wrote: > On 31/07/2012 14:58, Tim Mitchell wrote: > >> >> > Raspberry Pi. Knoiw it's noit AVR, but 25 euro, not bad >> >> I believe the waiting list is still quite long. > > > Farnell is supplying them from stock, apparently. They are in fact the
2012-07-31 by Steven Holder
On 31/07/2012 18:03, Cat C wrote: > > > How many people here, being used to bare metal programming, would be > comfortable programming the Raspberry?Sure, it's hard to make an > embedded web site anyway; but for most non-networked things? > Sorry this is a bit off-topic but it's
2012-07-31 by Leon Heller
On 31/07/2012 18:03, Cat C wrote: > > How many people here, being used to bare metal programming, would be > comfortable programming the Raspberry?Sure, it's hard to make an > embedded web site anyway; but for most non-networked things? > Sorry this is a bit off-topic but it's a
2012-07-31 by Jim Wagner
Not familiar with Jaycar "webserver" but certainly, any "real" webserver will do more than smtp! Does it not do udp or anything like that? If it is the one I found ( SD / MMC Card Webserver In a Box ) , the catalog says http, ftp, smtp CLIENT, dns CLIENT, RS232 serial port. So, i
2012-07-31 by Philippe Habib
I got something from Netburner that has a web server, and a couple of serial ports and firmware to give you a virtual serial connection over the web. You can also use it to present web pages and some of their products include I/O ports and ADC inputs. They have a complete GUI to
2012-07-31 by Cat C
How many people here, being used to bare metal programming, would be comfortable programming the Raspberry?Sure, it's hard to make an embedded web site anyway; but for most non-networked things? Sorry this is a bit off-topic but it's a question to the people I care to hear from :
2012-07-31 by H. Carl Ott
On Tue, Jul 31, 2012 at 4:54 AM, adspi wrote: > ** > > > Hi All, > > this is not AVR-specific but I thought you could help me out. > > Jaycar had a web server in a box. This was so convenient for one could > turn on and off devices via the internet and check the status as well. >
2012-07-31 by Leon Heller
On 31/07/2012 14:58, Tim Mitchell wrote: > > > Raspberry Pi. Knoiw it's noit AVR, but 25 euro, not bad > > I believe the waiting list is still quite long. Farnell is supplying them from stock, apparently. They are in fact the enhanced $35 version. I got mine from RS and had to wa
2012-07-31 by enkitec@gmail.com
On 31-Jul-12 10:58, Tim Mitchell wrote: > ----Original Message---- > From: AVR-Chat@yahoogroups.com > [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Richard > Austin Sent: 31 July 2012 14:32 To: AVR-Chat@yahoogroups.com > Subject: Re: [AVR-Chat] Web server in a box > >> Raspberry
2012-07-31 by Tim Mitchell
----Original Message---- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Richard Austin Sent: 31 July 2012 14:32 To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] Web server in a box > Raspberry Pi. Knoiw it's noit AVR, but 25 euro, not bad I beli
2012-07-31 by Richard Austin
Raspberry Pi. Knoiw it's noit AVR, but 25 euro, not bad On 31/07/12 09:54, adspi wrote: > Hi All, > > this is not AVR-specific but I thought you could help me out. > > Jaycar had a web server in a box. This was so convenient for one could turn on and off devices via the internet
2012-07-31 by Leon Heller
On 31/07/2012 09:54, adspi wrote: > Hi All, > > this is not AVR-specific but I thought you could help me out. > > Jaycar had a web server in a box. This was so convenient for one could > turn on and off devices via the internet and check the status as well. > > Arduino have got s
2012-07-31 by adspi
Hi All, this is not AVR-specific but I thought you could help me out. Jaycar had a web server in a box. This was so convenient for one could turn on and off devices via the internet and check the status as well. Arduino have got some nice boards but unfortunately they do not supp