Hi,

for christmas this year a few friends and me decided to get out our old
track-car sets (correct name?) and build a big set.

My friend has Sheriff's car www.student.bth.se/~pt98mvo/police2.jpg
in which we wanted the nice flashy lights. So, I set up a AVR AtTiny15 (not
a PIC, I know..) with a surface mounted 7805 on top (not much space
available) and a pair of LEDs with a resistor each.
www.student.bth.se/~pt98mvo/police1.jpg

Problem: When the motor is running, the AVR is not getting enough power, or
possibly not stable enough power.
I tried putting a 22uF condensator over the AtTiny, and that helped a bit
but not enough. At idle speed it works, but at medium speed it starts to
reset and att full speed it does not work at all.

There is also a condensator that came in the car, which might be busted.

What can i do? Do I just need a bigger condensator for the chip, or is there
another problem I need to address?

Thanks

Magnus, Sweden

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