This mod adds base game electronic circuit, advanced circuit and processing unit items to Bob's electronics. Recipes are adjusted so the circuits use bobelectronics circuit boards as ingredients. e.g. Processing unit is built from Bob's electronic logic boards. A top tier Advanced processing unit is added, which corresponds to Bob's Electronic processing board. The progression where each level of circuit requires multiple units of the previous level is preserved, which results in the higher level circuits remaining a significant resource sink.
I consider the default bobmodule settings rather overpowered, so module strength is reduced down to something closer to what unmodded factorio provides. There are four levels of module, numbered 0 to 3 inclusive. Levels 0 to 2 correspond to unmodded factorio module levels 1 to 3.
There are also four intermediate module items (module cable harness) which don't provide any module effects. These only exist to provide an additional construction step when building modules.