Circuit Board (Forestry)

Circuit boards are an item provided by Forestry. They can can be used to change what a farm produces or certain attributes of an Electrical Engine by attaching different Electron Tubes.

In order to make circuit boards you will need a Carpenter.

The Basic Circuit Board only has one slot for an Electron Tube, Enhanced Circuit Board has two, Refined Circuit Board three and the Intricate Circuit Board has four.

To use this in machines (farm, etc), You will need a soldering iron and some electron tubes.