electrical 'noise' from a pic

Discussion in 'Embedded Systems and Microcontrollers' started by vanaardep, Apr 18, 2010.

  1. vanaardep

    Thread Starter New Member

    Apr 10, 2010
    Hi there

    Im having a strange problem with a circuit that i have constructed. This circuit controls about 6 leds using a pic16f628, no problems with the circuits operation but for some reason it cases electrical noise. This noise interferes with a 27mhz RC system. What can i add to the circuit solve this?

  2. Markd77

    Senior Member

    Sep 7, 2009
    First move the PIC as far away from the receiver ariel as possible.
    If you already have the 0.1uF capacitor across Vss and Vdd, which should help, you could try wrapping the power supply wires a couple of times around a ferrite bead. If that doesn't work a metal foil enclosure might help.