Arduino Firmata to light up LEDs

Could someone please help me compose a code to light up  LEDs after reciving a signal from a host computer?

frollard6 years ago
arduino playground and arduino reference;

There are examples for BOTH of the things you have posted.
Mr_Electric (author)  frollard6 years ago
I Checked out the arduino playground and Firmata Wiki and found exactly what I'm looking for. Thanks