Let's Make Robots!

clearing a serial lcd with arduino

i was wondering if i could use a serial command to clear a serial lcd. i am new to arduino so any help  is appreciated.

arduino uno is not responding -solved-

today i just got my new uno. after stealing a cable from my pinter usb a to b. if i try to upload to the uno i get this message(avrdude:   stk500_getsync(): not in sync: resp 0=00)

i was wondering if it was the usb cable but ive tried 2 already.

 

this error code is for the uno not being connected.if you are using windows you will have to select it manualy.(i have no experience with mac) 

a computer output to a video / cable

recently i got a mini projecter.my laptop computer is only 800/600

i was wondering if i could turn a monitor output into the cables that are yellow and red(dont remember the name)

a computer output to a video / cable

recently i got a mini projecter.my laptop computer is only 800/600

i was wondering if i could turn a monitor output into the cables that are yellow and red(dont remember the name)