Nowadays, non-integer controllers are a widely researched problem. One of questions, that is of great importance, is the design of non-integer order controllers and their approximation. In this paper the author presents an implementation method non-integer order controller of ATmega328P micro-controller. Experiments compared with Matlab Simulink simulation result of non-integer order controller response show consistency of implementation with desired behaviour. The presented approach is promising and can be successfully used in multiple applications.