How can I use computers or turtles to check how many items and stacks are there in a barrel? (Is there any way even?)
Im using MindCrack Feed the beast pack.
There is no practical way to count the number of items in a barrel using computercraft.
The only way to interact with a barrel (via computercraft) at all is to use a turtle and the only way that a turtle can interact with a barrel is to insert/pull out single stacks of items at a time. This is impractical as a method to count the contents of a barrel as a turtle only has 16 inventory slots available.