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HylianSavior

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Everything posted by HylianSavior

  1. We made a video describing the whole project- check it out!
  2. Board all soldered up and working! Hopefully we'll have some demo videos out soon.
  3. Design is finished and sent to the fab! It's now been christened as "BoosterBot".
  4. Board routing is pretty much complete! Still need to add in ground planes and do a DRC. Also, the hole for the ball caster in the middle is made of three overlapping drill hits at the moment, which isn't supported by the fab. I'll have to change it to a cutout, which I'm not feeling too great about.
  5. Yep, we're mounting a ball caster on the front to keep it balanced.
  6. The idea is that everything mounts straight onto the BoosterPack so the board itself is the chassis. You can see that the motors are mounted straight onto the BoosterPack in the back of the image. This is for the Intern Design Contest so keep an eye out for it! Your BoosterPack looks really nice as well. I've used the Magician Chassis before and it's great.
  7. https://www.dropbox.com/sh/jrogxsmuv0zul65/AAAEET4Bxoq1iO3496Pk3dqOa Placement is pretty much done now. I'm concerned that some of the tall tantalum caps and inductors will scrape the ground, as they're on the bottom of the board. I'll have to flip them to the top if there isn't enough margin.
  8. Quick update: https://dl.dropboxus...oosterpack2.png The five sensors up at the front are reflectance sensors on the bottom of the board for line tracking and maze solving. The middle three are for PID line following, and the two at the edges are for recognizing splits in the track.
  9. http://youtu.be/I0JuGvbfIIE http://boosterbot.in https://github.com/Hylian/BoosterBot http://hackaday.io/project/1845-BoosterBot Here's a BoosterPack that @@szhao, jwp071, and I are working on. It's a BoosterPack that turns a 40-pin Launchpad into a fully functional robot. It has two Micro Metal Gearmotors from Pololu driven by a DRV8833 motor driver IC and has five QRE1113 reflectance sensors from Fairchild for line tracking. It also has breakouts for a Sharp IR distance sensor and a servo. For power, a 3xAAA battery holder fits between the LP headers, which powers the 3.3V and
  10. I've made a daughterboard for the TI Evalbot using the EM connectors. It has a MSP430G2553, Xbee (Bluetooth Bee), and an XV-11 LIDAR. The goal is to eventually get SLAM working with it. The LIDAR (laser distance sensor, really) continuously rotates and reports distance values and angular velocity. The MSP430 controls the rotation with PWM and the velocity data, and acts as a SPI slave to the Stellaris on the Evalbot to report distance values. The XBee is connected straight to the Stellaris UART. Example of the LIDAR in use: http://youtu.be/KnspWPlBM_o I just got the boards in and
  11. Hi all, I'm trying to get the Capacitive Touch Boosterpack working with the new F5529 Launchpad, but I'm a bit confused. I am trying to implement the "RO_COMPB_TB0_WDTA" example for the F5529 provided in the Capacitve Touch Library code examples. From what I can see, the timer measures the length of a single charge up over RC, which varies when C is changed, via the comparator, which snaps the voltage back to 0 after it fully charges. Diagram of RO taken from CapTouch Library Guide: http://i.imgur.com/chb09pR.png Diagram taken from the example: * c-+----------------
  12. Whoa, that image came out much larger than I expected. Well, it's a matter of personal opinion. I've had Macs over the years, and OSX is a nice OS, but usually end up sticking with Windows and Linux. My Mac Mini G4 is sitting in the corner running Debian still faithfully working as a home server. As for system upgrades, I would disagree. They've only been making it harder for users to get at system internals, which is a part of Apple's philosophy. The image above is a bit exaggerated since Mac Pro is crazy overpriced even compared to the other Mac lines, but I would argue that har
  13. Sorry to be the naysayer here, but I would much rather go for building my own PC than buying a Mac. The price premium is just too large for not that much in return. If you're set on buying Mac, I would say MBP.
  14. Yes, yes and no. What is that red track on the right side of the board? From an RF point of view, it will short out the antenna. It would be best to have an off-board antenna. Maybe a wire monopole or a dipole on a chunk of coax. If you went with a dipole on coax then you could put a decent RF connector on the board and avoid routing pitfalls. I'll give you ideas on how to route your board if you like. What would you like to do? What do you mean by the "red track"? The one going up to one of the pins is a ground line, which should disappear once I put in a ground plane.
  15. Hmm, that's a good suggestion. I don't actually have much experience with the CC1101. I'll look into it. Edit: Thinking of revising antenna design using this DN: http://www.ti.com/lit/an/swra160b/swra160b.pdf
  16. After much neglect, I redid the entire board, using the Launchpad libraries. Made the traces much tighter this time. Anyone have any opinions on antenna placement? Is it a better idea to move it away from the rest of the components, or just have it the way it is now?
  17. I've had great success getting samples off Serpac. I used a .edu and received a huge sampler pack that I did not ask for, but my friend also ordered with a regular email and got what he asked for.
  18. Bumping the thread... Anyone have any experience with C2000? I'm considering using it on my quadrotor, but I fear the learning curve might be a bit too steep for me... Being a 150MHz ARM core, it might be a bit too overpowered as well. Edit: After a bit of research, it looks like Stellaris is more what I want...
  19. I personally like these LCDs: http://www.sparkfun.com/products/10168 They can't be beaten at $10 each. Controlling them isn't difficult and you get a full 84x48 graphic display with LED frontlight.
  20. Then how do we choose the weight? What is a suitable weight? What the filter is doing is keeping a running average so that one large fluctuation won't change the value a whole lot. Right now, for every input, it keeps 3/4 of the current value and averages in 1/4 of the new value. You can change these values through some reasoning and trial and error to get what you want.
  21. http://hackaday.com/2011/10/17/how-to-d ... k+a+Day%29 This article may be of interest to some.
  22. The Arduino/AVRs seem to be very popular on simple wheeled robots; why not the MSP430? Something small, simple, low-cost, and that docks right underneath or on top of the Launchpad board. This idea isn't fully developed yet, but I would imagine it to have something along the following: -Battery holder -One or two buttons -Motor controller -Geared motors -Prototyping area And maybe a display of some sort, wireless communication module, and a simple distance or reflectance sensor. The idea is to keep it low-cost, since the Launchpad is already so cheap. The motors will probably end
  23. Looks like my request got rejected because I used an .edu email... one of the few times that using an education email doesn't help.
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