What are the limits of rx / tx communication between 2 arduinos. What about 1 way communication from one arduino to 10 arduinos? Will this work? Like i take the tx of the master and short it to rx's of all the 10 other arduinos (slaves). I'm trying to create some synchronised events where timing is not important however set of events controlling which LED's glow will be important. I was thinking of I2C but this seems easier. Anyone tried this before?