Activar varios pines de Arduino simultáneamente

http://tronixstuff.wordpress.com/2011/10/22/tutorial-arduino-port-manipulation/

http://www.arduino.cc/en/Reference/PortManipulation

Sometimes you might need to set multiple output pins at exactly the same time. Calling digitalWrite(10,HIGH); followed by digitalWrite(11,HIGH); will cause pin 10 to go HIGH several microseconds before pin 11, which may confuse certain time-sensitive external digital circuits you have hooked up. Alternatively, you could set both pins high at exactly the same moment in time using PORTB |= B1100;

Crear un excel connection manager dinámico

En la propiedad Expressions del connection manager:

"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + @[User::arch_destino] + ";Extended Properties=\"EXCEL 12.0 XML;HDR=YES\";"

Siendo @[User::arch_destino] una variable.

Error al abrir excel generado con ssis

Hay que agregrle XML al connection string:

Provider=Microsoft.ACE.OLEDB.12.0;Data Source=c:\temp\aa.xlsx;Extended Properties="EXCEL 12.0 XML;HDR=YES";