Powering the 802.11 Chip with USB Board

Discussion in 'The Projects Forum' started by AgentSmithers, Sep 23, 2011.

  1. AgentSmithers

    Thread Starter Active Member

    Jan 14, 2011
    52
    0
    Hi Everyone, I got a USB programming board from machine science and it emulates a comport on my Linux box called /dev/ttyUSB0.

    I wired the device up like so(Picture Attached)

    but the last issue is that the USB board powers by VDD and not VCC so the unit will not turn on. What is left to get this puppy up and running? VCC is unregulated voltage right? so Do I need to convert my Regulated voltage to something unregulated?

    Currently my board is pushing 5V 500MA and I put a 10k Resister to drop it down to approx 3.3v.

    USB PROGRAMMING BOARD MACHINE SCIENCE
    &
    Nano IWIFI

    Any Enlightenment?
    Thanks!
    -Agent
     
  2. oldtech33709

    New Member

    Sep 24, 2011
    26
    0
    You would be better off using a low drop out linear regulator to derive the 3.3V. Has the load changes the current through the 10K resistor will change. There will be a lot of ripple on the 3.3V.
     
  3. AgentSmithers

    Thread Starter Active Member

    Jan 14, 2011
    52
    0
  4. oldtech33709

    New Member

    Sep 24, 2011
    26
    0
    That site has good selection. You could use a 500mA. Pay close attention to the application notes.
     
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