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2010-08-28 by Russell Shaw
Chuck Hackett wrote: > I have done a lot of searching for an LED driver with: > - I2C interface > - 16 channels (or, two 8 channel devices if 1/2 the price of a 16 channel device) > - 10 to 30 ma per channel > - Individual PWM adjustable constant current on a per channel basis >
2010-08-28 by Chuck Hackett
I have done a lot of searching for an LED driver with: - I2C interface - 16 channels (or, two 8 channel devices if 1/2 the price of a 16 channel device) - 10 to 30 ma per channel - Individual PWM adjustable constant current on a per channel basis - Ability to identify fault (open
2010-08-23 by evgenii sorokin
The length of cable is too long for CAN i think, may be you'll need to use re-translators to reach the high bitrate . Final bitrate will depends on several factors: the length, the cable type. Also it depends on the cable environment: the industrial sets, HV lines for example. So
2010-08-23 by Dave McLaughlin
Hi Chuck, See comments below. > From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Chuck Hackett > Sent: 23 August 2010 05:07 > To: AVR-Chat > Subject: [AVR-Chat] Preparing for CAN-bus > > > I have been busy field testing my devices in stand-alone mode
2010-08-22 by Chuck Hackett
I have been busy field testing my devices in stand-alone mode but I'm now ready to tackle communications between them. Communication will be a multi-drop CAN-bus implemented over an outdoor, buried, twisted-pair cable (yes, I know I'll have to implement lightning/surge and ground
2010-08-17 by evgenii sorokin
hello :) It's curious, but is there real application in real life for these wonderful leds? :) I'm looking for accelerometer applications too. But i'm trying to use them in real devices. I have some ideas about ones, but i'm thinking they are not financially effective on the mark
2010-08-16 by blue_eagle74
What do you think about this? I used an AVR with a 3-axis accelerometer. http://www.youtube.com/watch?v=72d-NfnnRS4&feature=channel Brian
2010-08-16 by Jamak Topoli
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2010-08-12 by Marc R.J. Brevoort
Hi David V, > Spammer = toast. > No idea how he got approved though. I've seem the same sender "Zhamak Boobs" spam the HD24 yahoo list. Apparently he used a compromised, legitimate account. The moderator there mentioned he did not block the account as usually legitimate messages
2010-08-10 by John Samperi
At 11:50 PM 10/08/2010, you wrote: >Spammer = toast. > >No idea how he got approved though. I have a feeling that lists like these are frequented by IDIOTIC spammers. As soon as I post some reply both here and on the CVAVR list my spam increases. No doubt some imbecile collect em
2010-08-10 by David V
> 11:39:12 AM > > Mobile , Animal , Flower & Love Wallpaper Spammer = toast. No idea how he got approved though.
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2010-08-09 by John Samperi
At 01:16 PM 9/08/2010, you wrote: >Sorry, I don't quite follow your meaning???? That's because I wasn't making any sense!! 2nd time today. I'm a bit dyslectic today and read it as ISP..... Glad you got it working anyway. :-) Regards John Samperi **********************************
2010-08-09 by Philippe Habib
This doesn't really answer your question, but have you thought of not using the HW SPI and just bit banging the stuff you need for your startup? -----Original Message----- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Jeff Blaine Sent: Sunday, Augu
2010-08-09 by Jeff Blaine
John, Never mind it. I made a stupid mistake on the #define - had the wrong blasted pin. Thanks - our suggestion was not the answer - but it helped push my head to the answer and I'm most grateful for it. 73/jeff/ac0c www.ac0c.com From: Jeff Blaine Sent: Sunday, August 08, 2010 1
2010-08-09 by Jeff Blaine
John, Sorry, I don't quite follow your meaning???? do you mean the pins on the SPI port are always dedicated to the SPI function? Or, is it that even when SPI is enabled, you can always directly write to those pins and affect their state (until an SPI operation reverses them, tha
2010-08-09 by John Samperi
At 12:41 PM 9/08/2010, you wrote: >then disable it so that the MOSI line is available for other uses. The SPI, all pins, is ALWAYS available regardless. Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkh
2010-08-09 by Jeff Blaine
My SPI is working fine. But I just want to use it for part of a startup routeene. And then disable it so that the MOSI line is available for other uses. I did not see anything in the data sheet preventing this but that blasted MOSI line wants to stay high even after I disable the
2010-08-07 by Jeff Blaine
Erikc, The AVR provides clock sources for a set of switched capacitor filters used in a communications project. The AVR takes the 3 rotary encoder and 5 buttons as inputs, runs some switching control lines and provides these clock signals which determine what frequency the filter
2010-08-07 by erikc
Mind if I ask what you are doing with this kind of code? In my case, I'm trying to come up with a digital readout for my mini-mill. erikc Jeff Blaine wrote: > Erikc, > > Yes, exactly like that. Thanks! > > 73/jeff/ac0c > www.ac0c.com > > > > From: erikc > Sent: Friday, August 06,
2010-08-07 by Steven Holder
On 06/08/2010 22:55, Jeff Blaine wrote: > > erikc, > > In this project, yes they are together. But that's not always the > case. If I can't find a better solution, then I will just set the > routeene to work with a 2x4 pair and provide it an "encoder number" > which would resolve
2010-08-07 by Jeff Blaine
Erikc, Yes, exactly like that. Thanks! 73/jeff/ac0c www.ac0c.com From: erikc Sent: Friday, August 06, 2010 6:20 PM To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] passing an AVR port's bit pointer to to a function I think so. Are you trying to do something like this? The cod
2010-08-06 by Robert Adsett
On 8/6/2010 3:16 AM, Jeff Blaine wrote: > I have an encoder service function that reads a couple of bits from an AVR and increments a counter if a turn was decoded. > > To make the function generic, I would like to pass the port bits as arguments to the function. > > Unfortunatel
2010-08-06 by erikc
I think so. Are you trying to do something like this? The code compiles under WINAVR. (apologies for being a smartass :D ) // code begins // #include #include #include #define true 1 #define false 0 char last_one; // previous encoder sample char fault; // goes high when both line
2010-08-06 by Jeff Blaine
erikc, In this project, yes they are together. But that's not always the case. If I can't find a better solution, then I will just set the routeene to work with a 2x4 pair and provide it an "encoder number" which would resolve to A0/A1 for encoder 1, A2/A3 for encoder 2, etc. Tha
2010-08-06 by erikc
Will the port bits both be on the same port or can they be on different ports? If so, it seems to me that the best way to go would be to pass the port bits as a bit mask (i.e. pin7 = 0x80 rather than pin7 = 7) and do it that way. erikc Jeff Blaine wrote: > I have an encoder servi
2010-08-06 by Jeff Blaine
I have an encoder service function that reads a couple of bits from an AVR and increments a counter if a turn was decoded. To make the function generic, I would like to pass the port bits as arguments to the function. Unfortunately, I cannot quite figure out how to pass the port
2010-07-29 by Dave McLaughlin
Hi Philippe, I use www.schaeffer-ag.de for front panel design. They have some parts that allow you to make the rest of the box if you want a simple chassis type setup. I prefer to use on off the shelf plastic enclosure which often comes with a metal front and then simply replace
2010-07-29 by Philippe Habib
A while back someone posted about a place for nice one off enclosures. I thought I had saved the message but can't find it now. any suggestions for a nice looking box? Thanks.
2010-07-27 by John
Proper grounding practices can be a bit tricky. Years ago we used to encapsulate gas discharge tubes for lighting protection on telephone lines at subscriber premises with the aim of protecting the subscriber, premises and telephone equipment. Lots of spectacular stuff in testing
2010-07-27 by John Samperi
At 02:53 AM 15/07/2010, you wrote: >how can i see the actually o/p in real-timeØ You can't once the program runs. If you are using the simulator then you can do multi-steps but it's extremely slow. Regards John Samperi ******************************************************** Amp
2010-07-14 by Amir
when i press f5 to run program,the actually o/p doesn't appear in the i/o view in the real-time, the i/o view window doesn't update Permanently . how can i see the actually o/p in real-timeØ [Non-text portions of this message have been removed]
2010-07-07 by David Reaves
Well, I sent this message well over two weeks ago, so I'm not sure why it's being posted now, but, any way... :-) Why not? The idea is to protect the microcontroller from a non-common mode surge on its I/O pins. That is what an optocoupler is designed to do: as well as isolating,
2010-07-07 by Tim Mitchell
-----Original Message----- From: AVR-Chat@yahoogroups.com on behalf of David Reaves Sent: Sat 19/06/2010 17:07 To: AVR-Chat@yahoogroups.com Cc: David Reaves Subject: [AVR-Chat] Re: ATMega16 I/O port protection diodes >This is exactly the purpose logic opto-couplers ("opto-isolato
2010-07-07 by Jim Wagner
I would choose gcc, either through WinAVR or Eclipse. Eclipse runs on linux, Windows, Mac. Any compiler will have a drop-down menu with many processor choices. After all there are many AVRs. And, there are no one-processor compilers. So, every one MUST do many. A long selector me
2010-07-07 by Riccardo Castellani
1 -If you should give suggestion for your experience, what compiler should you choose ? I think it's important good support, for example in IAR I noted it's necessary to select many options for specific processor in drop-down menu. 2- Do you know what compiler has major support i
2010-07-07 by Jim Wagner
Depending on your code size, I would start with a 324. Then upgrade to 644 if you need. I think availability of 1284 is a bit marginal still as it is relatively new. Jim Wagner Oregon Research Electronics On Jul 6, 2010, at 9:44 PM, Riccardo Castellani wrote: > Ok, I will drop my
2010-07-07 by Riccardo Castellani
Ok, I will drop my old 8535 but what to choose as processor ? M164p, M324p, M644p or M1284p ? Can you suggest me a good on line shop fot buying AVR porogrammer ? AVR Dragon or AVR JTAG ICE Mk2 ? ----- Original Message ----- From: Dave McLaughlin To: AVR-Chat@yahoogroups.com Sent:
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2010-07-05 by David Kelly
On Jul 5, 2010, at 2:46 AM, wrote: >> I seriously recommend that you revisit your CPU selection looking for an AVR with JTAG or Debug-wire interfaces for on-chip symbolic debugging. > > 1- AT-Mega8535 has JTAG or Debug-wire interfaces for on-chip symbolic debugging ? > I have AVR
2010-07-05 by Dave McLaughlin
If you are willing to spend money on the IAR compiler, I would suggest you invest in either the AVR Dragon or AVR JTAG ICE Mk2 at the same time. Which one will depend on the processors you intend to use. This means you will want to drop the ATMega8353 and consider one of the late
2010-07-05 by John Samperi
At 05:46 PM 5/07/2010, you wrote: >1- AT-Mega8535 has JTAG or Debug-wire interfaces for on-chip >symbolic debugging ? No. The Mega8535 is a pretty old chip. Use something like a Mega164p which is pin compatible but has JTAG (you lose 4 pins on portc). You can then upgrade to the
2010-07-05 by ric.castellani@alice.it
>I seriously recommend that you revisit your CPU selection looking for an AVR with JTAG or Debug-wire interfaces for on-chip symbolic debugging. 1- AT-Mega8535 has JTAG or Debug-wire interfaces for on-chip symbolic debugging ? I have AVR ISP programmer MKII + STK 500 board 2- I'm
2010-07-05 by stevec
Spend some time reading avrfreaks.net. The forums (including merits of different C compilers), projects section (donated code), products, etc. I recommend CodeVision AVR, IAR, and if you have NO money, WinAVR that is free with Atmel's AVR studio. Your project to work with video o
2010-07-04 by David Kelly
On Jul 4, 2010, at 4:20 PM, Riccardo Castellani wrote: > I wish investing on my knowledge, so if you think Winavr is suitable for my > 2 projects I'll use it, otherwise I'll buy IAR because I don't want to study > winavr to replace it in the future with AIR. What do you think now
2010-07-04 by Jim Wagner
On Jul 4, 2010, at 2:48 PM, Donald H wrote: > > > --- In AVR-Chat@yahoogroups.com, "Riccardo Castellani" > wrote: > > > > I wish investing on my knowledge, so if you think Winavr is > suitable for my > > 2 projects I'll use it, otherwise I'll buy IAR because I don't > want to stu
2010-07-04 by Riccardo Castellani
I wish investing on my knowledge, so if you think Winavr is suitable for my 2 projects I'll use it, otherwise I'll buy IAR because I don't want to study winavr to replace it in the future with AIR. What do you think now ? ----- Original Message ----- From: "Jim Wagner" To: Sent: