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...occasionally comes out with some great quotes delivered deadpan. After the Wallabies beat the Argies in the Rugby Championship last year:
"This win will have given them an injection and, as we all know, you don't have to give an Aussie too much of an injection for his confidence to start coming out of his mouth."
If your neighbours don't listen to The Ramones, turn it up real loud so they can.
“We didn't have a positive song until we wrote 'Now I Wanna Sniff Some Glue!'” ― Dee Dee Ramone
"The Democrats want my guns and the Republicans want my porno mags and I ain't giving up either" - Joey Ramone
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statement of the bleeding obvious isnt it?
bryce
MCAD
---
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Well, if you can't win, better to lose with an attempt at humour, I suppose
Christian Graus
My new article series is all about SQL !!!
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So I ordered a Beaglebone Black from Sparkfun 10 days or so ago and they were on back order and stated that they had a shipment coming in Jan. 5th so on Jan. 3rd they got a shipment of 240 of them and my order was place on BO Arrived status. I might add that they said on there BBB page that 240 were available!
So here it is 4 days later and they modified my order to New Order again and when I called they said I would have to wait for the next shipment on Feb. 19 because all the BO's head of me got them.
WTF?
If they were all ate up by BO's why did they put on the BBB page that there were 240 available for shipment.
This just seems like bad practice to me or am I just over reacting?
Either way I have cancelled my order and won't do business with them again!
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They're actually really good. The problem is the website doesn't do a great job of relaying status. Those Beagles are selling like mad.
I've never had a problem with Sparkfun.
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I guess I'm just overanxious and over sensitive?, and a little pissed!
I cancelled the order because I saw 2 other sites had them available but when I went back today they were also sold out so I'm thinking it was the same thing with them.
I've never had a problem with Sparkfun either but I emailed them this morning about status and they never answered me so am a little pissed about that.
C'est la vie
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Just one of those things with items in demand. Sit tight and wait or look elsewhere.
The ones I have seen on Ebay are Feb shipping.
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Yeah they rescheduled for Feb. 19, I guess I just don't agree with putting them out for sale when they are already promised. 
I'll reorder at a later date I've got plenty of other stuff to do right now anyway.
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I have just placed an order for one through farnell and they have given me an estimated delivery date of 3/Feb.
I am backing the Logiboard[^] on Kickstarter and the pledge I have gone for includes boards for Raspi and Beagle, so thought I might as well get the beagleblack in time for when the logi is due to arrive in April.
(Kickstarter closes in 59hrs)
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Thanks Dave I'll check it out.
I'm going to hold off for a while, I was really disappointed when this happened so I'll wait and get from another vendor later.
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I've ordered thousands of dollars of stuff from SparkFun, and not a single problem. I've followed them since they were a couple college guys running it out of an apartment. Its really a stand-up company growing faster than they can keep up with. I'm sure this is just a problem with the inventory system, they recently changed the entire back-end.
Either way I wouldn't have a problem ordering anything from them, if you think it was wrong, email the sales people and they will bend over backwards to make it right.
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Windows 7 at a low, low price. Coming from Germany(land of the lost parcel)(and chocolate)(mmmmmm....), supposed to arrive any time between 14th December and this Monday(!). Still not here. 
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Has anyone had any experience with the Freescale K60 microcontrollers? I'm curious as to how nice they are to work with. It appears there may be some significant memory size limitations, but I'm not an expert (or I wouldn't be asking!).
CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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uControllers generally are restricted in the amount of programmable and RAM memories but some allow expansion.
Also it seems that this brand relies on the Tower to expand which looks like that would be a major restriction, at least for me. I'm cheap and wouldn't want to pay extra for the tower.
Do you need the encryption?
If not why not check out the Raspberry Pi or Beagle Bone Black which has a wide user base and a plethora or expansion boards.
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Thanks for the comments, Mike. The choice isn't mine, but a client wants some technical software written that will likely run on the microcontroller. I'm thinking that may be a major hurdle. We're talking about finite difference solutions to the non-linear wave equation using data from the ADC's as input, so the computations aren't trivial. I currently am using C# to do the calcs and it works fine. I can translate it to C, but my concern is whether it can be ported to a uCPU.
This application would take about 10 position and load readings per second, differentiate the position to get velocity, then use the velocity and load as boundary conditions. I need to store enough cycles of data (5 to 10 cycles per minute) to spot changes and estimate the nonlinear parameters. If the parameters are estimated correctly, then the calculated cycles should repeat. All in real-time. On a PC this would be a piece of cake, but on a uCPU with limited memory, I'm not sure.
I think it's likely beyond what the Raspberry Pi could handle, but maybe not. I'm not familiar with the other uCPU's - I generally haven't done much of that other than play with some of the Microchip PIC chips - that was a lot of fun, but nothing sophisticated.
CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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Walt Fair, Jr. wrote: I generally haven't done much of that other than play with some of the Microchip PIC chips - that was a lot of fun, but nothing sophisticated.
I haven't done any real intensive or critical real time collection on a uController yet and have only worked with the 8-bit Atmel chips so I can't comment on much else.
Good luck!
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Never used such microcontrollers, sorry. Memory size doesn't look that bad, however it strongly depends on your needs.
Veni, vidi, vici.
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Thanks for the comment. Yes, I think there may be memory limit problems, or maybe I'd have to go back to the olden days of counting bits and bytes and using trickery to squeeze data in limited systems.
CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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Walt Fair, Jr. wrote: I'd have to go back to the olden days of counting bits and bytes and using trickery to squeeze data in limited systems.
It is a microcontroller, isn't it? 
Veni, vidi, vici.
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It sounds like 1mb or 256kb of storage isn't much, but that is a LOT of code. I would be very surprised if you had so much code you couldn't fit it in there. I've designed some very complex systems that took less than 128kb of storage on the chip, including TCP/IP stack, CAN, etc.
Really if you are butting up against the 1mb barrier, you are better off using a chip that doesn't have onboard storage (or a few KB for startup), then connect up a NAND device and run off of that. Usually when you get to that point you are looking at POP or BGA chips and have people to help work that out...
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Thanks for the comment, Ron. I'm not overly worried about the program code memory, although that might be a consideration in the end. It's the data memory for lots of floating point arrays that has me (perhaps needlessly) concerned. I'm guessing I need about 10,000 FP numbers in a rotating buffer to fully describe the system and I need at least 3 or 4 additional arrays for comparisons. It sounds like I'm creeping up on around 250 KB just for data storage, not to mention program code and other odds and ends.
I also need to find out how the FP arithmetic will be handled to see if that presents a precision problem or not.
CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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10,000 FP values, considering single precision FP, takes up about 40kb of memory (4 * 10000 / 1024, so 39.06kb).
The biggest issue I would see you having may not be RAM, since you can easily get external memory and use that, but MCU's aren't known for speed in floating point operations, mostly because they don't usually have floating point coprocessors (FPU's), so they have to do the operations in integer registers.
The FP arithmetic is typically as accurate as the data type is, so I wouldn't worry too much about that. If you are using an analog input to read the data they publish how many bits they are and how many bits are usually "jitter" or accuracy bits (typically 2 or 3).
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I think we're pretty much thinking the same, Ron. I estimated about 40k per array and about 5 arrays to do the calcs and comparisons. That would use about 200k right there in single precision. My C# code needs double precision, but that may mainly be due to my laziness. I may need to dust off some scaling methods, etc. to make things work in single precision. If not, then array memory will be proportionally larger.
Right now I have no idea what FP library they'll be using, but most of them slow things down, so that is also a concern ofr real-time coding. Fortunately I've done more time critical things in the past, but it's been a long time, so I'll likely have to relearn a few things.
CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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"It is as devoid of thermal excitation as the dextro mammary of a female necromancer"
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "As far as we know, our computer has never had an undetected error." - Weisert | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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It's unseasonably warm here - but that won't last: we will probably be frozen solid (or at least unable to move except on foot due to 1 inch of snow) by next week.
Stay in, stay warm, cuddle your SO. Wait for cold to pass!
Never underestimate the power of stupid things in large numbers
--- Serious Sam
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