Velleman MK103 Sound to light project

Discussion in 'The Projects Forum' started by JayroK, Feb 2, 2012.

  1. JayroK

    Thread Starter New Member

    Feb 2, 2012
    Hello all,
    I m about to start a DIY project with the MK103 sound to light unit and i had some questions

    I am fairly new to electronic DIY but i want to use the MK103 with over 80 leds at the same time.
    basically instead of having 4 led light up with the sound i want over 80 to do so.
    How should i proceed?
    any help would be appreciated, as i say i am new to this type of DIY.
  2. KJ6EAD

    Senior Member

    Apr 30, 2011
    Last edited: Feb 2, 2012
  3. Audioguru


    Dec 20, 2007
    Replace the LEDs with an N-channel Mosfet. Connect a 1k resistor to ground from the gate of the Mosfet to turn it off. The Mosfet can drive many LEDs connected in strings. Each string will have a few LEDs in series and in series with a current-limiting resistor.
    The strings of LEDs will need a power supply to provide enough current.