Matrix user forums

hi all
i am using pic16f627a for my project...the project include ne555 generating 10 khz and the pic will make some maths..the problem is that the micro controller work fine until i connect the power to ne555..every thing go crazy..all buzzers beeping!

so i am using Breadboard and on it{16f627,ne555,leds,buzzers)

using pins(RB0,RB1,RB2)...internal clock..Mclr is off..RB0 input and RB1,RB2 output......i think the problem from the high frequency out from ne555.....any suggestions?

If it was me, I would scope the power supply line, and see how stable it is.
Also if not already done so, try adding an electrolytic cap of say 100uF and 100nF cer cap across the supply pins of microcontroller.

It may help if you post a circuit diagram.

I'm guessing a school/college project since not using microcontroller to generate 10KHz?