Hi, need your help in programing my Arduino duemilanove please I need to gat digital data on the "RX" and "read" it every 3 sec, if the data is for example 0011 I need to keep checking, but if the data is 1111 I need to send a 5V to an external buzzer from leg "TX" and to keep sending the 5V from t…

using the RX TX

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