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rockets4kids

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  1. Like
    rockets4kids got a reaction from dangpzanco in tone generator on MSP430 g2553   
    Are you seriously so lazy that you are not even going to bother to edit the text of your classroom assignment before asking someone else to do it for you?
  2. Like
    rockets4kids got a reaction from ike in tone generator on MSP430 g2553   
    Are you seriously so lazy that you are not even going to bother to edit the text of your classroom assignment before asking someone else to do it for you?
  3. Like
    rockets4kids got a reaction from cubeberg in tone generator on MSP430 g2553   
    Are you seriously so lazy that you are not even going to bother to edit the text of your classroom assignment before asking someone else to do it for you?
  4. Like
    rockets4kids got a reaction from oPossum in tone generator on MSP430 g2553   
    Are you seriously so lazy that you are not even going to bother to edit the text of your classroom assignment before asking someone else to do it for you?
  5. Like
    rockets4kids got a reaction from pabigot in Fast and Fun MSP430 Robot Car   
    A proprietary file format for a one page image that could better be advertised as a URL?
     
    PASS...
  6. Like
    rockets4kids got a reaction from gsutton in ultra low power mcu, is it a narrow segment?   
    You can't really compare the M4 with the MSP430, and even the M3s are a stretch.  The M0 is actually a good comparison with the MSP430, and on the contrary, they tend to have as much or more flash/ram than the msp430.
     
    Spec wise, the LPC1114 blows the 2553 out of the water at half the price.  Sadly, there is little documentation available outside of the data sheet, very little sample code, and almost no community support.
     
    TI would be in some real trouble if anyone addressed those issues...
  7. Like
    rockets4kids got a reaction from bluehash in ultra low power mcu, is it a narrow segment?   
    The story of the MSP430, as I have heard it, is a result of the fall of communism in Eastern Europe.  Supposedly, utilities were free, or at least unmetered, in the communist era.  The switch to capitalism meant the need for a lot of utility meters, and the MSP430 was developed to support this niche - yet large volume -- market.  This story is somewhat substantiated by the large number of early MSP430 app notes that focus on measurement.
     
    Regardless, the MSP430 managed to become one of the most popular low power MCUs in the 1990s, and dominated for many years.  However, with the proliferation of always-on battery-powered devices, power consumption has become an issue across the board.  Just about every micro-controller vendor touts their nano-power or pico-watt parts these days.  What sets the MSP430 apart is that the architecture was designed to support low-power from the start, whereas it was merely bolted-on in somewhat less-than-elegant ways on pre-existing architectures.
     
    The recent explosion of new ARM Cortex-M based architectures have all included similar power-saving features in their design, and now for the first time TI has a lot of serious competition in the low power market.  In many ways, the only direction to go in the low-power realm is lower voltage, and that is where TI is going with the 0.9v parts.  One of the others is low-leakage gates, the focus of the Wolverine parts.
  8. Like
    rockets4kids got a reaction from bluehash in Fluke Multimeter in Battlestar Gallactica   
    In this case, BSG - TOS.
     
    aka, the cheezy Glen Larson version from the late 1970s which was totally awesome when I was 10.
  9. Like
    rockets4kids got a reaction from yair in ultra low power mcu, is it a narrow segment?   
    The story of the MSP430, as I have heard it, is a result of the fall of communism in Eastern Europe.  Supposedly, utilities were free, or at least unmetered, in the communist era.  The switch to capitalism meant the need for a lot of utility meters, and the MSP430 was developed to support this niche - yet large volume -- market.  This story is somewhat substantiated by the large number of early MSP430 app notes that focus on measurement.
     
    Regardless, the MSP430 managed to become one of the most popular low power MCUs in the 1990s, and dominated for many years.  However, with the proliferation of always-on battery-powered devices, power consumption has become an issue across the board.  Just about every micro-controller vendor touts their nano-power or pico-watt parts these days.  What sets the MSP430 apart is that the architecture was designed to support low-power from the start, whereas it was merely bolted-on in somewhat less-than-elegant ways on pre-existing architectures.
     
    The recent explosion of new ARM Cortex-M based architectures have all included similar power-saving features in their design, and now for the first time TI has a lot of serious competition in the low power market.  In many ways, the only direction to go in the low-power realm is lower voltage, and that is where TI is going with the 0.9v parts.  One of the others is low-leakage gates, the focus of the Wolverine parts.
  10. Like
    rockets4kids got a reaction from bluehash in Launchpad MSP-EXP430G2 and linux tty?   
    Are you having problems at the PC end or the MSP430 end?
     
    At the PC end, you should be able to talk to the MSP430 exactly the same way you talk to your Arduino. Just substitute the appropriate /dev/tty.
     
    Personally, I just use "screen". $ screen /dev/ttyS0 9600
  11. Like
    rockets4kids got a reaction from sirri in 1 Battery (JT) Power Source for MSP430 Launchpad ^_^   
    The Joule Thief is only suited for applications where lack of regulation and extreme ripple are not an issue -- such as pulsing an LED.
     
    If you want a cheap and simple regulator boost regulator to *reliably* power an msp430, take a look at the Microchip MCP1623, MCP1624, or MCP1640.
  12. Like
    rockets4kids got a reaction from spirilis in My time with the LPC1114 dip28   
    I have been told that the reason for the wide packaging is to allow for more PCB traces to be routed underneath the chip.  Apparently, there *is* still a section of the commercial market using single-sided, through-hole boards, and that is the target market for this chip, not hobbyists.
  13. Like
    rockets4kids got a reaction from izdane in Post your Thrift Store finds   
    Obligatory:
     

     
    Sadly, thrift stores have gotten quite expensive in the past few years, and I hear the trend has increased with the popularity of the above-referenced song.  It should also be known that most thrift stores (or the depots that supply them) skim the cream and sell it on eBay these days.
     
    I have always had much better luck with Craigslist, Freecycle, or just driving around affluent neighborhoods on trash day.
  14. Like
    rockets4kids got a reaction from bluehash in Post your Thrift Store finds   
    Obligatory:
     

     
    Sadly, thrift stores have gotten quite expensive in the past few years, and I hear the trend has increased with the popularity of the above-referenced song.  It should also be known that most thrift stores (or the depots that supply them) skim the cream and sell it on eBay these days.
     
    I have always had much better luck with Craigslist, Freecycle, or just driving around affluent neighborhoods on trash day.
  15. Like
    rockets4kids got a reaction from GeekDoc in Post your Thrift Store finds   
    Obligatory:
     

     
    Sadly, thrift stores have gotten quite expensive in the past few years, and I hear the trend has increased with the popularity of the above-referenced song.  It should also be known that most thrift stores (or the depots that supply them) skim the cream and sell it on eBay these days.
     
    I have always had much better luck with Craigslist, Freecycle, or just driving around affluent neighborhoods on trash day.
  16. Like
    rockets4kids got a reaction from bluehash in New (soon to be) valueline chip. MSP430G2955 56kb Flash 4kb Ram!   
    Although the pages/references to the 2955 have disappeared, there are several 2755/2855 pages:
     
    http://www.ti.com/product/msp430g2855
     
    http://www.ti.com/product/msp430g2755
     
    and even some errata sheets:
     
    http://www.ti.com/lit/er/slaz515/slaz515.pdf
     
    http://www.ti.com/lit/er/slaz516/slaz516.pdf
     
     


  17. Like
    rockets4kids got a reaction from izdane in TI deals is back   
    Yes!  You can now get all the hardware at the old pricing, but we're going to call it a deal now.
     
    What a brilliant marketing strategy!
  18. Like
    rockets4kids got a reaction from ike in TI deals is back   
    Yes!  You can now get all the hardware at the old pricing, but we're going to call it a deal now.
     
    What a brilliant marketing strategy!
  19. Like
    rockets4kids reacted to Rickta59 in Is it just me or tonight TI doubled LaunchPad price?   
    I'm going to use this price increase as an excuse to find something better. I've long put up with all the warts on the msp430 because of the price. At $4.30 I felt like it needed a hand from the community to let it shine. At $9.99 you are just taking advantage of the work the rest of us have done for free.
     
    Things I used to like about the msp430:
     
    $4.30 with hardware debugger
     
    Things that have bugged me from day one, that I put up with because the price was $4.30
     
    o Lack of Linux or Mac support
    o CCS v4 based on some ancient version of Eclipse and full of plugins that made it
    dog slow and unreliable
    o Size limited CCS
    o Lack of launchpad CCS support on linux
    o The tiusb3410 9600 baud limited linux nightmare of a usb -> serial interface
    o lack of dip chips beyond 16k/512bytes
    o Booster pack stupidity,
    o Lack of standardization for the pin layouts.
    o Couldn't even figure out some standard pins for SPI/I2C/UART
    o Different chips use different pins for spi , uart , i2c
    o Can't use i2c/spi and hw UART at the same time
    o no 5 volt available from USB connection
    o Spending all my time on these forums trying to explain why the Serial port doesn't work
    o Wondering why they launched it with a 2k chip with no hardware UART when they were
    trying to make it look like an Arduino and then being surprised when people bought them
    and put them in a drawer until Energia emerged.
    o Having to explain to people why an msp430g2231 really isn't the same as an atmega328
    and how to get around the fact that there is no hardware uart so you have to juggle
    to be able to send serial commands to a g2231 while running a servo code both using
    the timer chip
    o not enough ram on the chips to do useful things with sdcards or graphics displays
    o msp430 chips get expensive in low quantities once you leave the value line
    o msp430 chips don't really compete on a performance or price basis to ARM or PIC chips
    other than with the value line chips. So you can waste a lot of time learning the architecture
    only to find out that doing real world things with them is probably not the smartest
    decision.
    o It is actually very difficult to source msp430 chips. It took about 1 year after I got my
    first msp430g2553 before I started seeing them available on http://octopart.com To be
    honest, now I don't care I really want a dip chip version of a FRAM chip as that is
    really the only useful msp430 chip.
    o Confusing licensing schemes with regard to USB code and the msp430f5510. I decided to
    not try and figure out the lawyerese and just use another usb solution after trying
    to get an answer on e2e.ti.com
     
    So did TI fix any of those problems? No, the community did.
     
    How does TI repay the community ..
     
    "Thanks, we got it. We'll take it from here. Oh, BTW the price is going up!"
     
    You're welcome!
     
    -rick
  20. Like
    rockets4kids got a reaction from GeekDoc in IRC   
    A few notes to those unfamiliar with IRC...
     
    Traffic on #43oh is highly variable. In order to make use of it, you pretty much need to stay connected most or all of the time. Don't ask a question and then leave five minutes later. Also, it is not polite to leave immediately after someone has answered your question. Stick around and help the next person who asks a question.
     
    It is highly unfortunate that there are no channel operators (*cough*bluehash*cough)on #43oh as this has led to an inordinate amount of highly off-topic traffic which has ultimately resulted in some of the most helpful members abandoning the channel. Please try to limit the amount of non-MSP430 traffic, and do not, under any circumstances, engage those with severe psychological problems. There are IRC channels for that, but #43oh is not one of them.
     
  21. Like
    rockets4kids got a reaction from pine in Hot glue gun suitable for fixing header joints?   
    Would not recommend hot melt glue here. Epoxy will be far stronger and more reliable.
     
     
  22. Like
    rockets4kids got a reaction from yamaplos in OLPC XO laptop + Energia   
    The big hit is indeed the JVM, both in terms of overall package size and memory usage. If you can ditch the IDE and use a lightweight text editor, you will have a much smaller, much more responsive system. If you can go a step further and ditch the window system and run directly in the framebuffer, you will have an even faster, more responsive system.
     
    It is worth noting that old laptops with specs much better than the XO are basically free these days, so unless you are targeting an existing XO userbase, it is going to be easier to simply find alternative hardware.
  23. Like
    rockets4kids got a reaction from chibiace in energia device support   
    I have not used Energia, but the 2013 is similar enough to the G2 series that the basic peripherals should works just fine. Needless to say, you should not expect to find support for the SD16 peripheral.
     
    Speaking of the SD16 on the F2013, I have been playing with that recently. I have been unable to achieve more than 12 bits of usable precision on a breadboard. I am not sure if this is a function of noise on the breadboard, or it is inherent to the design of the F2013. I can watch the noise drop steadily as I increase the oversampling rate but I can still only get 12 bits at the *maximum* oversample rate (1024x) so I am inclined to think that the problem is inherent to the F2013.
     
    If you really need 16 bits of precision, you may wish to look elsewhere. I sampled some msp430afe253 parts which have three SD24 ADCs along with a separate analog front end but have yet to complete testing with them yet.
     
    BTW, if you already have the SD16 working and you are getting better than 12 bits of precision, I'd love to hear how you are doing it!
  24. Like
    rockets4kids got a reaction from Oscarasimov in Completely clueless and need advice for screen choice.   
    I finally got my HD44780 working a few weeks back (what a PITA!) but once I did I fell in love. I have also noticed that they are now super cheap on eBay. There are plenty around $2.30/ea with free shipping -- at least for the 5V versions. The cheapest 3.3V ones I saw were about $4.50.
     
    It is difficult to find a multi-digit LED display for less, and in addition you are going to need either a driver chip of some sort. The common driver (I forget the part number offhand) is ridiculously expensive from US distributers ($5 - $10, IIRC) but can be found on eBay in the $1 - $2 range. You can also use shift registers and transistors and drive it from the uC more directly.
  25. Like
    rockets4kids got a reaction from spreng37 in Strange breadboarding issue (MSP430G2231 + TLC5940)   
    It's a really good idea to have a 10 uF on the power rails.
     
    Also, double check all of your ground and power connections for breadboard faults.
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