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2006-07-25 by bibin john
http://booksbybibin.14.forumer.com/viewtopic.php?t=3 troubleshooting tips for this programmer http://booksbybibin.14.forumer.com/viewtopic.php?t=6 refer avrbook.rar from yahoo group-booksbybibin for more epowere_rm wrote: I need a simple programmer circuit for AVR ---------------
2006-07-25 by Art Granzeier
If you want a very low-cost programmer without needing an adapter for each chip, get a Butterfly ($20), a Butterfly Carrier (http://www.ecrostech.com/Products/Butterfly/Intro.htm) and a breadboard (Radio Shack Catalog #: 276-175). Breadboard the circuit (just a couple of wires fr
2006-07-24 by amol_deshmukh
You cannot make simpler than this It works with POnyprog & ICC-AVR Amol Deshmukh 03d10028 3rd Year Department of Mechanical Engg. IIT_Bombay http://www.me.iitb.ac.in/~adeshmukh/ --------------------------------- See the all-new, redesigned Yahoo.com. Check it out. [Non-text porti
2006-07-24 by Tim Mitchell
AVR-Chat@yahoogroups.com wrote: > wd0e wrote: >> Can anyone point me to a 6 pin keyed header for ISP programming to >> match the AVRISP-II? To put on a PCB we build. Digikey would be nice >> but I'm having no luck finding them anywhere and nothing in the board >> history either.
2006-07-23 by dlc
If you don't want to make one, this one is as simple and cheap as they get, and it'll work with just about anyone's boards: http://www.wrighthobbies.net/products/isp/isp.htm DLC Leon Heller wrote: > ----- Original Message ----- > From: "epowere_rm" > To: > Sent: Sunday, July 23,
2006-07-23 by Leon Heller
----- Original Message ----- From: "epowere_rm" To: Sent: Sunday, July 23, 2006 9:38 AM Subject: [AVR-Chat] AVR programmer >I need a simple programmer circuit for AVR Look for SP12, it's very simple (just a couple of resistors) and supports ICP. Leon
2006-07-23 by epowere_rm
I need a simple programmer circuit for AVR
2006-07-23 by epowere_rm
I hope u can help me I am a new person in avr i decid to learn C AVR using codevission programme my problem is that i cannot understand all examples & i connot find the extention of the programme plz help me
2006-07-22 by Jim Wagner
On Fri, 21 Jul 2006 12:26:31 -0700 Ned Konz wrote: > Jim Wagner wrote: > > I would use async serial over RS422/485 with simple > packets > > containing a CRC. > > > > One of the big problems with TWI in this situation is > that > > the addressed device has to ack in a particular
2006-07-21 by Robert Adsett
At 04:24 PM 7/21/2006 +0000, Ryan wrote: >Are there any benefits towards using a non-logic level FET, aside from >having more choices available? Historically availability has sometimes been an issue. I've had products held up because I couldn't get LL parts, I've a related proble
2006-07-21 by Jim White
Adaptor made. Crimped a 10 pin hdr onto the 6 pin AVRISP-II cable to get going. Have to make 4 more. More on 6 pin headers for new boards later. Jim ----- Original Message ----- From: Ned Konz To: AVR-Chat@yahoogroups.com Sent: Friday, July 21, 2006 1:18 PM Subject: Re: [AVR-Chat
2006-07-21 by James Ronald
Jim, Is this not what you looking for? http://www.mouser.com/catalog/626/1029.pdf ----- Original Message ----- From: Jim White To: AVR-Chat@yahoogroups.com Sent: Friday, July 21, 2006 11:25 AM Subject: Re: [AVR-Chat] 6 pin header for programming Thanks for the leads. Mouser does
2006-07-21 by Ned Konz
Jim Wagner wrote: > I would use async serial over RS422/485 with simple packets > containing a CRC. > > One of the big problems with TWI in this situation is that > the addressed device has to ack in a particular bit time. > In a long wire system, this means that you have to slow
2006-07-21 by Ned Konz
wd0e wrote: > Can anyone point me to a 6 pin keyed header for ISP programming to > match the AVRISP-II? To put on a PCB we build. Digikey would be nice > but I'm having no luck finding them anywhere and nothing in the board > history either. A pointer in a message to Farnell 302-
2006-07-21 by Roy E. Burrage
Compare characteristic curves for the logic level and standard parts, Ryan. You might be surprised at the similarities. REB Ryan wrote: >Are there any benefits towards using a non-logic level FET, aside from >having more choices available? > > >--- In AVR-Chat@yahoogroups.com, Ro
2006-07-21 by Roy E. Burrage
Try these in a part number search on Mouser, Jim: 649-71918-106 649-71922-106 And this page of Amp connectors: http://www.mouser.com/catalog/626/1029.pdf REB Jim White wrote: >Thanks for the leads. > >Mouser does not appear to have anything in 6 pin. If you can point out a stock
2006-07-21 by James Hatley
Just a thought... Have you considered a converter cable? Maybe make one or maybe someone makes one. This would allow you to plug in the ISP 6 pin on one end and then the 10 pin plug the other end of the cable into your board for programming. Shame to scrap 150 boards. Jim ----- O
2006-07-21 by Jim White
Thanks for the leads. Mouser does not appear to have anything in 6 pin. If you can point out a stock number that would be great. I ordered some 1096979 from Farnell which is their new stock number for the Harting 0918 506 7323 noted below. 5 day delivery is the best they can do.
2006-07-21 by Jim Wagner
I would use async serial over RS422/485 with simple packets containing a CRC. One of the big problems with TWI in this situation is that the addressed device has to ack in a particular bit time. In a long wire system, this means that you have to slow down the clock. Further, the
2006-07-21 by Ryan
Are there any benefits towards using a non-logic level FET, aside from having more choices available? --- In AVR-Chat@yahoogroups.com, Robert Adsett wrote: > With a logic level device you can get away without anything additional but you > will be pushing the I/O pins hard. With a
2006-07-21 by Robert Adsett
Quoting Ryan : > The gate goes straight to an AVR output > > --- In AVR-Chat@yahoogroups.com, Robert Adsett wrote: >> >3) Are there any benefits towards using a "mosfet driver"? (When >> >would one be required?) >> >> Depends, what are you using to drive it now? With a logic leve
2006-07-21 by gary skinner
I need to have up to 100 AVRs talk to each other over unknown topology network with long wires. collisions expected. TWI can handle this nicely other than the long wire spec. philips makes a I2C extender part that basically gives SCK & SDA a boost to allow low pullup R's to work.
2006-07-21 by Kathy Quinlan
fxguthri@excite.com wrote: > RE: ferrite beads. Try this info to get a scope on the subject: www.murata.com/emc/knowhow/pdfs/te04ea-1/23to25e.pdfThis and other manufacturers should have some design notes for download. > Frank Thanks Frank :) This is what I love about this list, s
2006-07-21 by Russell Shaw
Kathy Quinlan wrote: > Robert Adsett wrote: > >>>2) What is the purpose of the ferrite bead? >> >>They can be used for EMI, I've not used one myself. > > OK how do we select these, or are they just a one size fits most ? > > People keep telling me to use them in SMPS designs, but
2006-07-21 by Don Ingram
Kathy Quinlan wrote: > Robert Adsett wrote: > >>> 2) What is the purpose of the ferrite bead? >> They can be used for EMI, I've not used one myself. > > OK how do we select these, or are they just a one size fits most ? > > People keep telling me to use them in SMPS designs, but
2006-07-21 by fxguthri@excite.com
RE: ferrite beads. Try this info to get a scope on the subject: www.murata.com/emc/knowhow/pdfs/te04ea-1/23to25e.pdfThis and other manufacturers should have some design notes for download. Frank _______________________________________________ Join Excite! - http://www.excite.com
2006-07-21 by fxguthri@excite.com
Hello again :) Thank you for the kind words. 1.) The low value gate (10 Ohm) resistor helps to control ringing - here's a link regarding the why-for's in a switching regulator design: www.fairchildsemi.com/an/AB/AB-9.pdf2.) You probably won't need the ferrite bead on a SM board l
2006-07-21 by Kathy Quinlan
Robert Adsett wrote: >> 2) What is the purpose of the ferrite bead? > > They can be used for EMI, I've not used one myself. OK how do we select these, or are they just a one size fits most ? People keep telling me to use them in SMPS designs, but I am still not sure what I need,
2006-07-21 by Robert Adsett
At 08:06 PM 7/20/06 +0000, Ryan wrote: >How would one calculate the values needed if > >1) I don't know the inductance of the solenoid and Measure a sample or two. Although not built as inductors they will be reasonably consistent because they need a consistent magnetic field fro
2006-07-21 by Robert Adsett
At 01:49 AM 7/21/06 +0000, Ryan wrote: >First, thank you for the incredible reply! It will take me a day to >chew it over. I will use a shottky diode as you suggest. First a Schottky diode will delay the turn off not quench the current. The Schottky has a lower voltage drop and t
2006-07-21 by Ryan
The gate goes straight to an AVR output --- In AVR-Chat@yahoogroups.com, Robert Adsett wrote: > >3) Are there any benefits towards using a "mosfet driver"? (When > >would one be required?) > > Depends, what are you using to drive it now?
2006-07-21 by Ryan
There I go again... confusing inductors and capacitors. Inductors resist a change in current. --- In AVR-Chat@yahoogroups.com, "Ryan" wrote: > The solenoid draws approximately 1 amp continuous. I have not > measured peak-on, but it is probably several times that
2006-07-20 by Ryan
First, thank you for the incredible reply! It will take me a day to chew it over. I will use a shottky diode as you suggest. Division of the high and low current paths on the PCB is a good thing to consider. Very important especially considering how an analog line next to or para
2006-07-20 by fxguthri@excite.com
Hello: I hope I can help. I have 40 years of electronic experience. The IRL520 is a hefty device, rated at 100V @ 9.2A. BTW - what type of solenoid requirements are involved - high current draw, high mechanical load, repetition rate, etc.? Do you really need to use this type of F
2006-07-20 by Steve Baldwin
Err. OK. By "Exactly correct" you mean that it isn't as you've shown it in your updated diagram at http://i5.tinypic.com/20hrl1i.jpg. Correct ? You said that the wiring between the solenoid and your circuit is integrated in some way. I can't remember the details. If you provide 2
2006-07-20 by Ned Konz
Ryan wrote: > Alright, ideally, I could place a diode across the flyback source > (solenoid)... but in this case I can't. (The solenoid is connected > remotely) I can't figure out how to do this and provide reverse > polarity protection. If I place a polarity protection diode on
2006-07-20 by Ryan
How would one calculate the values needed if 1) I don't know the inductance of the solenoid and 2) The inductance changes with time (because it's a solenoid) ? --- In AVR-Chat@yahoogroups.com, Ned Konz wrote: > > > What is done sometimes instead of a diode is to put an RC snubber
2006-07-20 by Ryan
Yes, to be accurate, the solenoid would be connected to "+12V IN". I'm given one terminal to ground, the other is already connected to +12V IN. Connecting the diode on the ground line would provide me with the opposite problem, negative spikes (i.e. from ESD, or what have you) wo
2006-07-20 by James Ronald
John Samperi wrote: > At 02:31 PM 20/07/2006, you wrote: >> Yeap, but a ONE pin header not 2+ :( > > 2 pin header + Stanley knife + heat shrink= 1 pin header ;) Does till I need like 40 of them next to each other (breakout cable for a LA ;) For a single pin, I just crimp them on,
2006-07-20 by Ryan
Exactly correct - the inductor is connected to +12V In. D3 is for reverse polarity protection to the driver circuit. D2 is supposed to kill any voltage spikes, but would be blocked by D3 as shown. Therein lies the problem. Hopefully this gets through ok, yahoo has been having pro
2006-07-20 by BryanW
No used BASCOM so not sure how they do it, but try slowing the programmer down. If You have the Kanda AVRISP software in the setup box select slowest for the speed and then see if the device is detected. You'll need v4 and above to do this. Bryan (Kanda) ----- Original Message --
2006-07-20 by Behrooz Hariri
I tried 4.194304 MHz external crystal, with and without caps; then tried 32,768 xtal, with and without caps, also CRO for around 1Mhz, and the 'dead' didn't even blink to me! The problem exactly is, the programmer (STK200/300) under BASCOM environment can NOT recognize any chip o
2006-07-20 by Kathy Quinlan
John Samperi wrote: > At 02:31 PM 20/07/2006, you wrote: >> Yeap, but a ONE pin header not 2+ :( > > 2 pin header + Stanley knife + heat shrink= 1 pin header ;) Does till I need like 40 of them next to each other (breakout cable for a LA ;) -- Regards, Kat. ----------------------
2006-07-20 by Steve Baldwin
> Here's a better diagram as to what's going on with the reverse > protection: > > http://i5.tinypic.com/20hrl1i.jpg > > Again, ignore the P-channel. I just can't figure out how to have both > reverse polarity and overvoltage protection. Where's the problem ? As you've drawn it,
2006-07-20 by John Samperi
At 02:31 PM 20/07/2006, you wrote: >Yeap, but a ONE pin header not 2+ :( 2 pin header + Stanley knife + heat shrink= 1 pin header ;) Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 A
2006-07-20 by Kathy Quinlan
John Samperi wrote: > At 01:37 PM 20/07/2006, you wrote: >> I am looking for the single pin 0.1" (2.54mm) square post connectors, >> these are usually crimp, with a square housing a single pin drops into, >> I use these on Jtag adaptors (no one seems to have a standard lol). > >
2006-07-20 by John Samperi
At 01:37 PM 20/07/2006, you wrote: >I am looking for the single pin 0.1" (2.54mm) square post connectors, >these are usually crimp, with a square housing a single pin drops into, >I use these on Jtag adaptors (no one seems to have a standard lol). Altronics? I think you mean part
2006-07-20 by John Samperi
At 01:33 PM 20/07/2006, you wrote: >A meter or two. I know you must have thought of this before, but is there any reason why you can't put a diode across the solenoid's coil? The diagram seem good otherwise with D3 providing reverse polarity protection to the circuit, but I would
2006-07-20 by dlc
You can use the intrinsic diode in a MOSFET for a flyback diode, and many designs do. However, depending upon what you are doing it will cause the MOSFET to heat up. Most folks prefer to move that heating off the part and use an external flyback diode. I've seen MOSFETs used in A
2006-07-20 by Kathy Quinlan
James Ronald wrote: > Thanks. I had been looking for some hard to find connectors as well. The > Mouser online catalog seems to work better then most. And online data > sheets with pictures. > > A link to the part I think Jim is looking for > http://www.mouser.com/catalog/626/102