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  1. Fish4Fun

    Dell Laptop Touchpad......

    This post is really more of an "experience" question than electronics..... I have been using various Dell Notebooks for a long time.....mostly the D620/E6500 series for the last 10 years or so....I always keep a "back up" because being "down" for a couple of days pretty much means my world...
  2. Fish4Fun

    Getting Started with FPGAs.....

    Hey Justin! Welcome to EP! I received my MOJO a week or two back....it is sitting on my bench waiting patiently for me to make an LED blink :-) That whole crawling before you run thing is slowing me down a bit....well that, and a large list of things to do on other...
  3. Fish4Fun

    Fuel tank sender resistance range conversion

    PCM ==> Powertrain Control Module....or so google tells me :-) So I am going to Ass-U-Me that the gauges are electronic NOT analog....since you state that the gauges all receive serial data from the PCM, this implies that each gauge has either a dedicated serial line, or a unique serial...
  4. Fish4Fun

    Fuel tank sender resistance range conversion

    Hello autowolf80...Welcome to EP! First, some general advice about posting inquiries to technical forums....while you are intimately familiar with your project, we have to glean everything we know about your project from your post, and while some details may seem obvious to you, they are not...
  5. Fish4Fun

    Electronics Repairer Wanted

    Tron788.....no disrespect, but you are kidding aren't you? The traxxas QR1 sells on ebay for less than $70 ( http://www.ebay.com/itm/Traxxas-QR-1-Quad-Rotor-Helicopter-6208-Blue-Ready-To-Fly-/151422388271?pt=Radio_Control_Parts_Accessories&hash=item23417a482f ), NO ONE qualified to repair...
  6. Fish4Fun

    Please Design This PCB...

    Fish....Fish?....FISH!....Why do I always get nominated for these projects? LMFAO.....reminds me of a college buddy's approach to dating....eliminate all the small talk and get straight to the heart of the matter....he said the slap to success ratio was worthwhile..... Good Luck Shilon! Fish
  7. Fish4Fun

    LED Power?

    Just FYI, the Chinese 3W driver listed assumes 3 * 1W LEDs in series....a typical 1W LED used with these drivers has a Vf of 2.5V to 4V suggesting that the design of the driver is an output voltage of perhaps 6V to 12V with a constant current of ~300mA.....The LEDs referenced have a Vf of 2.6V...
  8. Fish4Fun

    ATMEL vs PIC vs ARM microcontroller

    abhimanyu143...Welcome to EP! My personal preference is the AVR family from Atmel, but I don't think they are really any "better" than PICs, though there are likely some things each are best suited for......my very limited experience with PICs came a long, long time ago...I have never played...
  9. Fish4Fun

    LED lighting without power source

    @ADRT....& High Voltage Near By....That seems the most probable....it is hard to guess exactly HOW it is happening, but it is almost certainly some type of transformer coupling of the twisted wires in the x-mas light string with stray EM waves from the power lines.....to test this theory you...
  10. Fish4Fun

    How many people can fix electronic devices?

    @MichaelDP....&...."how many people could actually fix most electronics".....I would guess the literal answer to that question is likely "none"; that is, I doubt seriously there is anyone who could fix most electronics simply because any one person, even with remarkable technical skills, would...
  11. Fish4Fun

    Getting Started with FPGAs.....

    OK....first note....the Xilinx ISE download is MASSIVE!!!!!! If you "Download the entire package" it is ~8GB! They do have an "installer" that allows you to install only components you want/are "licensed to use".....Which brings up the next caveat.....while Xilinx has "free" basic tools for...
  12. Fish4Fun

    LED lighting without power source

    I would not say that is "normal" behavior....could be several things causing it....but they are all something of a stretch...if they happen to be in close proximity to a an AC mains line carrying high current I suppose it is possible you might get a "transformer" reaction into the led wiring...
  13. Fish4Fun

    Polarities on Fuse Holder?

    Hrrrrmmmm, well both tabs should be one or the other, lol. A fuse is a series connected device and you can choose to place it between the positive terminal and the device or between the negative terminal and the device...generally one would place a fuse in the "ungrounded" path so that...
  14. Fish4Fun

    Energy harvesting from solar panel

    wdariusw, It sounds like you are attempting to build a solar site evaluation device, perhaps a "logger'....these are readily available already built ( http://www.solarpathfinder.com/PF?id=JX9yF4Qr as a quick example) many with very sophisticated capabilities......If you are seriously considering...
  15. Fish4Fun

    Getting Started with FPGAs.....

    @Frenoy Osburn.....Thanks! After reading through the info about the MOJO, I ordered one of those as well :-) We will see if there are enough examples between the MOJO and the Papilio to get me off the ground....lol! Fish
  16. Fish4Fun

    Getting Started with FPGAs.....

    @BobK.....WOW, ok, so it turns out I am not the first person to think learning an HDL w/o having 'played' with an FPGA first is a lot to ask...... I found the link to the above quoted site here: http://papilio.cc/index.php?n=Playground.Playground along with links to other Tutorials on how to...
  17. Fish4Fun

    Getting Started with FPGAs.....

    @Harald Kapp....Thanks for the reply! I assume from your suggestions about an HDL that you have some working knowledge of FPGAs....and while I understand the importance of platform migration, I am not 100% certain it is pertinent to my needs.....I am a hobbyist and as such I have absolutely NO...
  18. Fish4Fun

    Help with RS485

    FuzzyWombatSoup..... You should REALLY look @ the Dallas series of 1-wire devices....lol, they are a PERFECT fit for your application...you can have a nearly infinite number of devices virtually any distance apart and use a single wire to connect ALL of them, lol, but if you are bound and...
  19. Fish4Fun

    Stepper motor control

    Deimantas, If you are using 1.5A NEMA17's then the ULN2004 driver you linked WILL NOT WORK....Furthermore, a pair of full-bridges will NOT replace a stepper driver in a typical CNC configuration. I have been where you are in the CNC learning curve; I know it seems confusing, but there are some...
  20. Fish4Fun

    LED min and max Current and Voltage

    Vmin ~0.75V Vmax > 12V Imin = 0A Imax >> 10A NO! The current limiting resistor limits the current! 0 - 500k ohms Do you mean Vf (Forward Voltage) of Vd (Voltage Drop) ? .... See #1 LOL! You need to do some reading....LEDs are current driven semiconductors, the Forward Voltage is a...
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