I want to make a project similar to this Turn Signal Biking Jacket
I want to use led's only for the left, right and a stop indicator(on the back, i don't want the leds on the sides like the instructable project).
According to me, the leds require 1 pin each and will share a common gnd(that's 4 pins).
The microphone will require 1 additional pin, with 1 going to the gnd (5 pins).
And I might require 2 pins for the power outlet (6 pins out of 8).
Now, i am a newbie in all this stuff so i don't want to go about experimenting with the chips. I am ready to disable the reset pin cause i wont require the chip again. I have got a couple of instructable's to help me in the programming and set-up plan(though they have used Arduino Uno or Lilypad), so I only want to know if it is possible to make the project with the attiny13a chip without the requirement of any additional parts.
Also, as an alternative, i wanted to use these leds instead of the lilypad led's, so i want to know if i can do the model in exactly the same way without using any mofsets etc(i just want 6 leds on each side). I'm extremely sorry for my horrible drawing(First time and no correct tools. used paint!)
ANY HELP IS APPRECIATED.