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fcs attachment (unippu style)

receiving data from master
On/Off
1 : Master arm
2 : Trigger

sending data to master
On/Off
1 : Active 1. It is used to tell if a pump of a drop tank is active or a radar of missile is active.
2 : Active 2. It is used to tell if a radar finds something or ready to drop a bomb.
3 : Lock on buzzer. For Lock on before launch (LOBL) missile or somthing that should ring buzzer when ready.
1 : ID. You can see them at the FCS micro controller.
2 : Current amount : Amount of drop tank fuel or bombs.
3 : Max amount : The max amount of drop tank fuel or bombs. Send at least 1.