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  1. rkcstr

    iDRV3 - New 3A Buck Driver

    I have about 300 pieces (~290) of 0805 size 16V 10uF XR7 ceramic caps if you're looking for some. Have plenty of other SMT parts too, including a bunch of 1206 and 0805 sized resistors, if you have something specific you're looking for. I'll be happy to trade for a driver :)
  2. rkcstr

    Micro-Drive laser driver by rkcstr

    I've transitioned to a distributor only via my website. If anyone is interested in distributing through their website, please let me know. I've had a number of customers ask about purchasing single drivers, however I cannot operate in that capacity, so there is still a customer base for the...
  3. rkcstr

    Micro-Drive laser driver by rkcstr

    ANNOUNCEMENT: Some may know that I've finished school. That means now I'm officially earning a paycheck as a resident physician. It also means I have crap for free time. That means that I've had little to no time to prep and ship orders let alone assemble more drivers to fullfill orders...
  4. rkcstr

    organic chemistry help

    Oh, I hated O-chem. Good luck with that stuff.
  5. rkcstr

    Ton of sleds with optics and box of misc stuff - Auction

    Haha, ok. The prices are arbitrary; the value is whatever the buyer is willing to pay ;)
  6. rkcstr

    Ton of sleds with optics and box of misc stuff - Auction

    Haha, Yeesh! I had these posted for like a week with no interest, now everyone wants something! I just want them out of my way, trying to minimize the amount of stuff for my upcoming move, so I'm inclined to sell them combined for the fact of getting rid of them! So, I will keep it...
  7. rkcstr

    Ton of sleds with optics and box of misc stuff - Auction

    Re: Ton of sleds with optics and box of misc stuff yeah, buying multiple can probably save on shipping. I forgot to bring #3 with me on my trip out of town, though, so I won't be able to ship it together with these and won't be back until the end of the month. Anyway, I should be able to fit...
  8. rkcstr

    Ton of sleds with optics and box of misc stuff - Auction

    Re: Ton of sleds with optics and box of misc stuff Yup, still available
  9. rkcstr

    WTB: Harvested Drive Sleds

    I'm selling a box of 30 some harvested sleds, mostly 6x. I could probably find enough PHR sleds added in to make it 40. Looking for $25 shipped in the US. Shipping alone will probably be at least $10, so its not like I'm making much on these.
  10. rkcstr

    Ton of sleds with optics and box of misc stuff - Auction

    Re: Ton of sleds with optics and box of misc stuff Um, a small LED and larger LED flashlight, some DX matches, couple ~1x3" round aluminum stock, bag of small "mouth" glowsticks, a small DC fan, a tiny red laser pointer with pattern heads, CR2032 batteries, bag of LEDs (don't know what color)...
  11. rkcstr

    Ton of sleds with optics and box of misc stuff - Auction

    I have two things up for sale: 1. A box of a bunch of harvested sleds. Over 30 6x Blu-ray sleds and a few PHR sleds. Most of them should have intact optics, though some are damaged. Lots of cool lenses, mirrors, etc. The red and blu-ray diodes have been harvested but most still have the IR...
  12. rkcstr

    Iphone 4

    haha, heya
  13. rkcstr

    While I was Gone

    What kind of car? I'm guessing a Toyota (well, Scion)? tC?
  14. rkcstr

    Help identifying some songs

    Shazam recognized the third one as "This is How We Do It" by Solid Base from the album Die Sommer Tanzscheibe
  15. rkcstr

    Iphone 4

    Its not going to be in any agreement since it has nothing to do with the service carrier of the phone. The carriers keep their own records that they get from your phone's communication with the network, which can be used to triagulate your whereabouts, anyway. Nothing is transmitted in regard...
  16. rkcstr

    100ohm trimmers

    1 and 3 are either end of the resistive track, 2 is the wiper. How it works is there is a carbon track in the pot that from one end to the other is the full measured resistance (between 1 and 3). A metal contact is attached to the rotating portion that moves across this track (pin 2) and can...
  17. rkcstr

    Iphone 4

    I have the iPhone 4 on ATT... I'm not a huge fan of ATT, but it works. What I wish is that I could get better in-building coverage, but that may be an issue with any carrier anymore using higher and higher frequencies. But, 3G coverage is pretty limited and really isn't all that fast, IMO...
  18. rkcstr

    L1117 Driver

    Reminds me of when I started... Etched all my boards myself, cut and drilled all the holes, inserted vias by hand, and so on. Even sold over 500 of them like that, which was a crapload of work! If you're drilling holes in the board, my suggestion is a Dremel (or other high speed rotary tool)...
  19. rkcstr

    Commercial/Industrial quality Greenlee Digital Multimeter (DM810) - can do low ohms

    I'm reviving this item for sale. I'm open to offers. I use these to set current on my drivers by measuring setting resistance since they can measure low ohms. Much simpler than soldering or connecting up a load and power source.
  20. rkcstr

    Micro-Drive laser driver by rkcstr

    I don't have a definitive answer, but I suspect it probably isn't as it seems. The regulator needs appx 1V extra itself, then you drop another 1.25V over the resistor on the output, so that's where the drop-out voltage comes from. Since the regulator can't produce more voltage than you give it...




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