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The level of automation, including operator assisting functions, is becoming more sophisticated in heavy machinery. This involves using new types of sensors and embedded computers. However, considering the long life cycles of heavy machinery, the electronic control systems should be modular and flexible. A modular control system of an automated machine is often distributed over CAN and Ethernet. However, many interesting sensor and actuator types do not have these interfaces. In this paper, a generic microcontroller board with analogous and digital communication is presented. With this board, CAN communications can be added to many sensors. The board can also perform sensor-related data processing. The microcontroller board is tested in several applications. In an automated wheel loader, the board is used in control of the work hydraulics circuit that is based on digital hydraulics.