Recent content by rxwontfit

  1. R

    Understanding B and H Fields: A Thought Experiment on Magnetic Field Propagation

    I know this. That doesn't answer my question. To say that B will circle the wire - does it imply that the iron filings will actually start moving in circles around the wire? Aka will they actually receive a constant angular force? Or will they simple orient themselves in a circular fashion...
  2. R

    Understanding B and H Fields: A Thought Experiment on Magnetic Field Propagation

    Hey everyone, I'm learning about B and H fields in electromagnetic waves and propagation class. Trying to wrap my head around the idea that magnetic fields wrap around current carrying wires. Consider this: If you were to take a clear, hollow cylinder, drill a hole at both ends, run a...
  3. R

    Maximizing Data Transfer Speed: How to Achieve 480 Mbit/s with USB 2.0

    Thank you for your comments so far. @skeptic & FlexGunship: thanks, but certainly your OS can supply data at rates listed on this page? http://usbspeed.nirsoft.net/ Furthermore, wireless networks cards - they must interact with the OS in order to pump data out and haul data in at rates of 54...
  4. R

    Maximizing Data Transfer Speed: How to Achieve 480 Mbit/s with USB 2.0

    The high-speed (USB 2.0) protocol is capable of 480 Mbit/s. How can I send data at these speeds!? This seems like a simple question, but I cannot seem to find a simple answer. Cheers, JoAr
  5. R

    Modifying Average Power of Binary Signal

    Recent technological advancements in the fabrication of LEDs have made it possible to utilize the visible spectrum as a high-speed communications channel. The potential applications for communication through light are essentially ubiquitous; lights illuminate our homes and buildings, streets…etc...
  6. R

    Modifying Average Power of Binary Signal

    @ everyone: I'll give everyone a little more background information and our current architecture... What we have at the moment are two laptops. One acting as a transmitter, and another a receiver. On the transmitter side, we're running a simple Visual Basic script that interfaces with the...
  7. R

    Modifying Average Power of Binary Signal

    Hello everyone, My colleague and I are transmitting serial data over a visible light communication channel. How can we eliminate flicker? - i.e. when the signal is 01000100 the LED is dimmer than 01111011. When long strings of data are sent, it causes the LED to flash and it's detectable to...
  8. R

    Add To Win API Send To Menu for VLC Project

    When right-clicking any file in Windows Explorer, there's a SEND TO menu. I want to add to this menu. My colleague and I are attempting communication over a visible light channel for our senior year electrical engineering project. What I'm imagining is right-click->Send To->VLC. There will be a...
  9. R

    Can Visible Light Communication Reach Higher Data Transfer Rates?

    it comes down to this: how do I send a 3Mbaud bitstream out of the USB port? I have the drivers installed for the FTDI chip, I'm looking for a language where I can actually specify that 3Mbaud is the baudrate...but from what I've seen I cannot find any.
  10. R

    Can Visible Light Communication Reach Higher Data Transfer Rates?

    indeed it does mask the usb as a serial port - but from a software side, communicating with the serial port requires that I fit within serial port restraints (within 115,000 baud?)... how can I transfer data at 3Mbaud if the software won't support it?
  11. R

    Can Visible Light Communication Reach Higher Data Transfer Rates?

    A colleague and I are in our 4th year of Electrical Engineering and are designing a Visible Light Communication device capable of sending text, pictures, videos, etc over a binary light channel. We are currently using an FTDI chip to interface between the USB and receiver/transmitter. According...
  12. R

    FREQUENCY: Radio to Infrared threshold

    Thanks for your replies, still looking for lots more insight, people please post up! :smile: @berkeman That's precisely the question: "Is it possible to generate photos via RF currents in antennas"... And how would the light be emitted? Would it follow much the same principles of EM...
  13. R

    FREQUENCY: Radio to Infrared threshold

    Hi folks, EM radio signals range in frequencies from a couple Hz up to approximately EHF (30-300GHz)... As we exceed the 300GHz threshold, we begin to approach the infrared section of EM spectrum, and furthermore into the visible light area of the spectrum. My question is, what happens...