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2007-12-18 by Enki
Just print the PDF to a PDF file using one of the PDF printer drivers available and the protection will be gone. Unless the text are not really text but images. MJ On 17 Dec 2007 at 14:51, Dave Hylands wrote: > Hi David, > > On Dec 17, 2007 1:49 PM, David VanHorn wrote: > > > I j
2007-12-17 by Dave Hylands
Hi David, On Dec 17, 2007 1:49 PM, David VanHorn wrote: > > I just copy it from the data sheet, massage it a little > > and put it into the library folder, never have to worry > > again about using jmp or rjmp...well unless the data sheet > > is wrong and we know that NEVER happe
2007-12-17 by David Kelly
On Mon, Dec 17, 2007 at 05:21:50PM -0500, David VanHorn wrote: > > I have heard of that but none of my data sheets have been locked. > > I think they may have stopped that after much furore. > > Cool, I just pulled down a M2560 sheet, and it is not locked. :) > I've been working
2007-12-17 by David VanHorn
> I have heard of that but none of my data sheets have been locked. > I think they may have stopped that after much furore. > Cool, I just pulled down a M2560 sheet, and it is not locked. :) I've been working with just the M128 in the last two years, so I hadn't had to try any ot
2007-12-17 by John Samperi
At 08:53 AM 18/12/2007, you wrote: > > Damned incnvenient of them to lock the data sheets against text grabbing > > though. > > When did they start doing that? I have heard of that but none of my data sheets have been locked. I think they may have stopped that after much furore.
2007-12-17 by Dennis Clark
>> I just copy it from the data sheet, massage it a little >> and put it into the library folder, never have to worry >> again about using jmp or rjmp...well unless the data sheet >> is wrong and we know that NEVER happens....... > > Damned incnvenient of them to lock the data sh
2007-12-17 by David VanHorn
> I just copy it from the data sheet, massage it a little > and put it into the library folder, never have to worry > again about using jmp or rjmp...well unless the data sheet > is wrong and we know that NEVER happens....... Damned incnvenient of them to lock the data sheets aga
2007-12-17 by Dennis Clark
Pay no attention to the "assembly uber alles" dinosaurs out there, C is only slightly higher level than that anyway. It does bring up one point, when working in embedded programming it pays to know the assembly so you can check and tweak C constructs to fit your needs. That said,
2007-12-17 by John Samperi
At 08:40 AM 18/12/2007, you wrote: >Some people have entirely too good of a memory.. >:) Your misfortune encouraged me to make include files of the interrupt vectors of all the chips I use. I just copy it from the data sheet, massage it a little and put it into the library folder
2007-12-17 by David VanHorn
On Dec 17, 2007 4:35 PM, John Samperi wrote: > At 06:02 AM 18/12/2007, you wrote: > >RJMP when it should be using JMP, that the ISRs all end in RETI, > > Now David, who would do such a silly thing....... :-) Some people have entirely too good of a memory.. :) Hey, it happens to u
2007-12-17 by John Samperi
At 06:02 AM 18/12/2007, you wrote: >RJMP when it should be using JMP, that the ISRs all end in RETI, Now David, who would do such a silly thing....... :-) He is not like us but he is using the "other" laguage. Regards John Samperi *************************************************
2007-12-17 by David VanHorn
On Dec 17, 2007 1:59 PM, Dennis Clark wrote: > NEVER trust a debugger. :) Turn off the interrupt and see if it still > happens. Something else may be taking you to that address and you may be > chasing a red herring. Check that your int vector table isn't missing any entries, or
2007-12-17 by Steven Hodge
Of course J > their own compartment with a similar venting fan. The need to vent > charging batteries is a well-known issue on boats. Brushless fans, I hope :) [Non-text portions of this message have been removed]
2007-12-17 by Dennis Clark
NEVER trust a debugger. :) Turn off the interrupt and see if it still happens. Something else may be taking you to that address and you may be chasing a red herring. DLC > Hi, > > This is why it is so frustrating. I just re-measured the ground > connection and according to my ohm
2007-12-17 by Dennis Clark
It can't fire if it is grounded. If it IS firing then one of your assumptions is incorrect: A- You are actually attached to ground B- That INT0 is actually what is firing So, disable the interrupt and see if the problem goes away - If it does then assumption A needs to be examine
2007-12-17 by Zack Widup
Hi Richard, My first thought is that if it's grounded, why are you setting it up for use in firmware? Why not just disable it? How is it grounded? Do you have a long circuit trace or wire to ground that might be picking up crosstalk from other nearby lines? Is it "grounded" throu
2007-12-17 by Richard Cooke
Hi, This is why it is so frustrating. I just re-measured the ground connection and according to my ohmmeter it is indeed grounded. And using the debugger it stops on the interrupt: "interrupt (EXT_INT0) void ext_int0_isr(void)" The ATtiny.h file lists EXT_INT0 as = 2 which is wha
2007-12-17 by Richard Cooke
Hi Zack, I've grounded it after not being able to figure out why it keeps firing. I figured that if it was grounded it couldn't be a hardware issue. I grounded it via a very short wire. Thanks, Richard --- In AVR-Chat@yahoogroups.com, Zack Widup wrote: > > > Hi Richard, > > My fi
2007-12-17 by Richard Cooke
Hi Folks, I'll try this question again as my post of Dec 15th didn't receive any replies. What would cause the INT0 to continually fire even if the pin was grounded? I have the set to trigger on rising edge (MCUCR = 0x03) but it will keep triggering. I have also tried to set it t
2007-12-17 by David VanHorn
On Dec 17, 2007 10:18 AM, Steven Hodge wrote: > The thruster battery will be in a naturally-vented compartment. However, > one of the task's of the uC will be to monitor charge currents and turn on a > fan when they are high. The main boat batteries (750 amp-hours) are in > their
2007-12-17 by Steven Hodge
The thruster battery will be in a naturally-vented compartment. However, one of the task's of the uC will be to monitor charge currents and turn on a fan when they are high. The main boat batteries (750 amp-hours) are in their own compartment with a similar venting fan. The need
2007-12-15 by Roy E. Burrage
"Speaking of which, remember these are open contactors. If you need to avoid sparks you may need to enclose them." Remember, too, that if there are combustible fumes you'll need more than just an enclosed contactor. How about your batteries, Steve? Are they in an enclosed space?
2007-12-15 by Robert Adsett
At 09:57 AM 12/15/2007 -0800, Steven Hodge wrote: >Welcome to my world. It's a bit of an industry separator. In the EV >industry relays are low current devices and solenoids are used to open and >close hydraulic valves. > >Ø I've encountered that use of solenoid as well. (Does
2007-12-15 by Steven Hodge
Welcome to my world. It's a bit of an industry separator. In the EV industry relays are low current devices and solenoids are used to open and close hydraulic valves. Ø I've encountered that use of solenoid as well. (Does EV stand for Electric Vehicles? I just bought a Prius.
2007-12-15 by Robert Adsett
At 07:49 AM 12/15/2007 -0800, Steven Hodge wrote: >Robert, thank you for your valuable comments. "Contactor"! I had never >heard that terminology. All that is ever used in the marine world is >"solenoid", or sometimes "relay". But you are right, searching on that term >does the t
2007-12-15 by Steven Hodge
Thanks for confirming. As for other techniques, I thing I'll just stick with the simple voltage divider, turning it on only to sample. I've already bread-boarded up the divider/dual-mosfet thing and it works just fine. Steve From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogr
2007-12-15 by Steven Hodge
Robert, thank you for your valuable comments. "Contactor"! I had never heard that terminology. All that is ever used in the marine world is "solenoid", or sometimes "relay". But you are right, searching on that term does the trick. I am very rapidly converging on using the SW500.
2007-12-15 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "Steven Hodge" wrote: > In Graham's post he says "To turn > the whole thing on, we apply a high > level to the drain of the N-channel." > I assume he meant to the gate, not > the drain? Argh! And I read that post through THREE TIMES before I sent
2007-12-15 by Roy E. Burrage
But Dave...sometimes it's fun to build those circuits, if for no other reason than to get a rise out of others. There's nothing like the surprised look on faces as a huge electrolytic capacitor lets loose with a bang, a cloud of smoke, and shoots a spiral coil of aluminum foil ac
2007-12-15 by David VanHorn
On Dec 14, 2007 10:11 PM, Philippe Habib wrote: > I am one of those people who learn more hands on than from reading. > The ideal book would have some explanation, then some suggestions for > circuits I could build and modify to gain understanding and maybe > some excercises with
2007-12-15 by Philippe Habib
I am one of those people who learn more hands on than from reading. The ideal book would have some explanation, then some suggestions for circuits I could build and modify to gain understanding and maybe some excercises with answers provided so I could check my understanding. I a
2007-12-15 by Roy E. Burrage
While you're waiting for your copy of Art of Electronics to come in, Philippe, you might check this web tutorial out. http://ibiblio.org/obp/electricCircuits/ You might also keep in mind that many manufacturers provide a wide variety of very good, some better than others, applica
2007-12-15 by Robert Adsett
At 07:46 PM 12/14/2007 -0500, Robert Adsett wrote: >For example > >An SW200 > - 250A continuous > - 450A 30% duty cycle, ~360second on time. They would likely >consider this intermittent duty if I recall correctly > - breaking current 1500A at 48V > -
2007-12-15 by Robert Adsett
At 05:19 PM 12/14/2007 -0500, David VanHorn wrote: > > It should be able to. The Optima battery that I will be using is a > starting > > type of battery, not a deep cycle, with a CCA (cold cranking amps) of > 1100 A > > (model D31T). > >Right, but I'm sure there's a finite time l
2007-12-15 by Robert Adsett
At 09:53 AM 12/14/2007 -0800, Steven Hodge wrote: > > > >12V? I^2R losses will eat you alive! 48V would be better, but I'll > >assume you're stuck with it. > >You got it. Boat electrical is moving (very slowly) to higher voltages, >but I'm stuck with the legacy 12 V. > > >Turning
2007-12-15 by Richard Cooke
Hi Folks, I'm embarrassed to have to ask this august group this simple question but it's kicking my butt and I'm at my wit's end. So here goes: I'm trying to use the INT0 pin to wake the chip from idle and have set it to trigger on rising edge. GIMSK = 0x40; //External Interrupt
2007-12-14 by David VanHorn
> It should be able to. The Optima battery that I will be using is a starting > type of battery, not a deep cycle, with a CCA (cold cranking amps) of 1100 A > (model D31T). Right, but I'm sure there's a finite time limit to that. http://en.wikipedia.org/wiki/Car_battery Wikipedia
2007-12-14 by Steven Hodge
>Ouch. >Can the battery actually deliver 400A for 5 minutes? >A large deep cycle should be about 4500 Amp/min, but the puckert >effect says SIGNIFICANTLY less under that fast a drain It should be able to. The Optima battery that I will be using is a starting type of battery, not
2007-12-14 by Philippe Habib
My application was for a hydraulic pump that only needed to run for a few seconds every few minutes. -----Original Message----- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Steven Hodge Sent: Friday, December 14, 2007 11:14 AM To: AVR-Chat@yahoogr
2007-12-14 by David VanHorn
On Dec 14, 2007 2:13 PM, Steven Hodge wrote: > Well the gotcha seems to be the continuous part. Starter relays in cars or > trucks are only designed for a few seconds of continuous use. The thruster > is limited in total use to something like 5-7 minutes, but it is also > require
2007-12-14 by Steven Hodge
Well the gotcha seems to be the continuous part. Starter relays in cars or trucks are only designed for a few seconds of continuous use. The thruster is limited in total use to something like 5-7 minutes, but it is also required, and is designed for, being able to be actually on
2007-12-14 by David VanHorn
On Dec 14, 2007 1:33 PM, Philippe Habib wrote: > Would a heavy duty starter solenoid from a diesel truck do the job for you? > I had a project a few years ago where the truck part was less than 1/4 the > cost of the commercial part. I was wondering the same thing. It would take f
2007-12-14 by Philippe Habib
Would a heavy duty starter solenoid from a diesel truck do the job for you? I had a project a few years ago where the truck part was less than 1/4 the cost of the commercial part. -----Original Message----- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behal
2007-12-14 by David VanHorn
On Dec 14, 2007 12:56 PM, Philippe Habib wrote: > That should be etched in stone and given to each person when they go to pick > up their embedded developer's union card. I'm mostly a software person and > I'm trying hard to learn as much as I can about hardware in order to be ab
2007-12-14 by Philippe Habib
That should be etched in stone and given to each person when they go to pick up their embedded developer's union card. I'm mostly a software person and I'm trying hard to learn as much as I can about hardware in order to be able to be an effective embedded guy. I am finding the a
2007-12-14 by Steven Hodge
>12V? I^2R losses will eat you alive! 48V would be better, but I'll >assume you're stuck with it. You got it. Boat electrical is moving (very slowly) to higher voltages, but I'm stuck with the legacy 12 V. >Turning off this monster will be interesting. Well, the actual thruster c
2007-12-14 by subscriptions@aeolusdevelopment.com
David VanHorn Wrote >> >I have put in a "bow thruster", which is a huge 5.0 KW, 12 VDC motor that >> >draws about 400 A (which is another story). This needs to be run from its >> >own local 12 V battery (an Optima AGM starting type) because to run it from >> >> Maybe not your bes
2007-12-14 by Tim Gilbert
Steve, We've done a lot of voltage measurement in the aviation world, which is similar to your situation. Several points: a. I wouldn't worry about the 10K input Z for the ADC for such a low frequency signal (DC). We use 57.6K and 6.11K resistors (1% or better) and have been able
2007-12-14 by David VanHorn
> >I have put in a "bow thruster", which is a huge 5.0 KW, 12 VDC motor that > >draws about 400 A (which is another story). This needs to be run from its > >own local 12 V battery (an Optima AGM starting type) because to run it from > > Maybe not your best choice of battery. What
2007-12-14 by Steven Hodge
Ah, yes, I did miss that. My scenario would have Vb >> Vcc applied to the uC output pin when off. I like the N-channel fet approach to switch the gate of the VP3203. However, I do need to clarify one point. In Graham's post he says "To turn the whole thing on, we apply a high lev