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ILAMtitan

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Everything posted by ILAMtitan

  1. Came home to a new package at my apartment today. I was expecting some screws for another project I'm working on, but was surprised by a much bigger box. Inside was a surprising new alarm clock, which is actually a lot cooler than it sounds! Really jazzes up my workbench. I decided that Vader needed to hop on his ride. Just kidding, he's joined me in at his right full place by my side, on my nightstand. We'll see how long he stays intact before his power is extended. Thanks Cubeberg!
  2. @@RobG, that looks great! I'm absolutely picking up a kit for my cube here at TI.
  3. ILAMtitan

    MSP430i2x?

    It sure does perform as advertised. The new MSP430i20xx family is initially targeted for low cost embedded e-metering applications, and other industrial markets where high precision analog is a must. We already have a few TIDesigns posted regarding its usage: http://www.ti.com/tool/TIDM-SERVER-PWR-MON and http://www.ti.com/tool/TIDC-SMARTPLUG-WIFI In e-meter applications you must sample the voltage and current signals simultaneous, or else you will inject an artificial phase delay that has to be compensated in software. To accomplish this, all of our meteorology devices have multiple d
  4. ILAMtitan

    Mailbag

    That shouldn't be a problem. Our next meeting is Tuesday, so I'll make sure to bring my good camera and get some shots of the team.
  5. I've tossed around the idea of making an e-meter booster pack, but the Launchpads just don't have the proper analog to do the TI energy metering solutions justice. We did just release a new TIDesign for a branch cirucit monitor that can measure up to 7 current channels: http://www.ti.com/tool/TIDA-00222 That might be a decent starting point if you want to make one of these yourself. Hopefully it goes without saying though, mains voltage is super dangerous, and make sure you play it safe.
  6. ILAMtitan

    Mailbag

    My apartment complex sent me a message that I had a new package delivery! Thanks USPS!! Luckily everything inside was intact. 30 RocketBadges from @@cubeberg! I'll be using these to teach some high school kids where I volunteer as a robotics mentor how to solder. Hopefully I'll be back later with photos from the lessons.
  7. Ya, I just looked up the WS2811 lib on the Stellaristi forum, and it's SPI based. Someone with more experience would have to make a new one for the CC3200 since the devices don't share a serial coms peripheral. It would be really cool to have WiFi controlled LED strips though. I might just have to get a CC3200LP and start working on this anyway.
  8. @@MORA99 - This lib is very MSP430 asm dependent. The CC3200 uses an M4, so there is no chance of a direct port. You might have some luck looking into a Tiva WS2811 library since it's the same core, but I doubt it would be a simple port. Once I get my hands on a CC3200 LP I'll probably try to make a compatible WS2811 library for it, or expand this one to work with it as well.
  9. That looks awesome. I would love to hang one in my cube here at work. (I already have a nixie clock at home) Something that you might consider is adding some blue led back lights to the tubes. I built one for my brother that had them and they look really slick.
  10. So, a few tests later, and I have a few things to report if anyone is going to try and make these. 1. The mechanical connections are critical. I wore them for a day, and by the end the LED strips were rather flaky. I need to go in an resolder some connections now. 2. The LED strips don't like the flex. One of them has a break in the DIO line that I had to track down and rebridge. 3. NiMh batteries are far superior to alkaline. Three Alkalines will dip below the dropout voltage of the LDO at around 60-70% life, while NIMhs will stay strong will close to 90%, with a bit extra capacity.
  11. As I teased a little bit in another post, here's my latest project: GrownUp LA Gears! For those of us who were growing up in the mid 90s, LA Gears were the best thing you could strap to your feet. They had LEDs in the heal that would flash when you walked. I wasn't lucky enough to have a pair when I was a kid, so maybe this whole thing is just me living out a lost childhood fantasy..... Much like the WS2811 driver library this project is being used to demo, I also snagged the idea from AdaFruit: https://learn.adafruit.com/firewalker-led-sneakers/overview I recommend reading through
  12. I'm just standing on the shoulders of giant's here. There sadly aren't many photos of the shoes during the build process so far, but I'll probably still do a project post about them when they are done.
  13. Hey guys, I haven't been around much lately, but a recent project brought me back here and using this WS2811 library. I'm trying to enable more people to use the LaunchPad in some of my volunteer work (FIRST robotics) and flashing LEDs is a good eye catching way to do it. To help facilitate people who are already using Arduino and the venerable AdaFruit NeoPixels, I ported over almost all of her functionality to work in Energia. https://github.com/ILAMtitan/WS2811Driver With this, any project using the NeoPixel library will be near 100% compatible. I also took some time and worke
  14. I was able to extract the cover from Garrett's STL file and extend it a bit to fit the TRF-7970 NFC BoosterPack. I added 6mm to it as you can see here: It should be able to fit with many other Boosters as well, but I haven't really tested it out. It sits only a few mm off of the Booster PCB so that the NFC tag is close to it. And here's the file for you guys to play with. 7970_5529Top.zip
  15. I'm very interested in getting the STLs. We just got a 3D printer in the MSP430 lab!
  16. I received a message from my apartment complex on Thursday that a package had arrived, and thinking it was some coffee I ordered I actually put off getting it from the office. When I picked it up, it was a clearly marked ThinkGeek box, and not my coffee at all. Inside was a Build-On Brick Mug!! Oddly perfect since I'm the guy in the office with the Legos in his cube,and I almost bought one a month ago. https://www.thinkgeek.com/product/ee3c/?srp=1 I decide to christen it with a quick light saber duel since I didn't have any coffee; still waiting on that package. Tha
  17. Dung, I expect a full redesign of the control box to include a CC3000 and MSP so that the lights can be controlled from my phone via WiFi.
  18. I'm not sure what the accuracy of using delayMicroseconds will be, but it looks like there might be some jitter in it due to how it process the number of cycles to actually wait. There is also some delay with the digital writes that will lengthen the time that you actually see the toggle. Regardless, I don't trust it. A better method to validate clock accuracy would be to output a clock directly to a pin and measure that. SMCLK on P2.2 would be a good choice since it's brought out on the headers. If your scope can't measure the full 16 or 25MHz, you can just set a divider for SMCLK as
  19. Hmmm, that hadn't even crossed my mind. I'm not a huge fan of tri-state implementations due to their complexity, but I would love to see an example. Do you of any on the 430 (my googling has failed me)?
  20. This project uses a solenoid driven clock, not a motor driven one, so the code will be significantly different. You'll have to generate a steady PWM value, and then vary it depending on the speed you want the clock to run. I'd love to see it if you get it working. I used the transistors as a method to get bidirectional drive on the solenoid, not really as a current delivery mechanism. I don't really see any issue with using multiple pins to fan the current load out, I just don't see a good way to get around the directional driving for a clock mechanism. if you set both bits in
  21. It's the application control card for the system shown in the video: https://www.youtube.com/watch?v=cv9PRXx4cYs That whole board runs on mains, and mistakes happen during development.
  22. One more fried board, courtesy of a colleague of mine. I know it's not an MSP, but the LM3S parts make some pretty patterns when you hit with mains voltage. Just another reminder to always triple check when working with HV.
  23. There are a couple options out there. Inline USB Isolation: http://www.bb-elec.com/Products/USB-Connectivity/USB-Isolators/USB-Isolators.aspx Isolated USB Hubs: http://www.sealevel.com/store/hub7i-optically-isolated-7-port-usb-hub.html Isolated FET: https://www.olimex.com/Products/MSP430/JTAG/MSP430-JTAG-ISO-MK2/
  24. You got off easy. I do a lot of work with mains voltage, and learned my lesson about debugging without an isolated interface early on. THis one blew out my laptop's dock as well in the process.
  25. I'm also interested to see how this is coming along. I work a lot with TI's e-meter designs, so I'm also curious to see how the rest of your open source e-meter is going. Drop me a line if you ever want a design review or any other help.
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