today i'm going to tell you about LED banner. its very popular now in here in sri lanka. its not difficult to create. in this banner i used two LED panel and S1 control circuit.and also 5V SMPS power supply unit.this S1 unit, it can connect to computer through serial port. and the software which i used here called 'powerled' it totally free of charge and u can get it with the S1 unit.
