This paper researches the generation of EMG signals in the human body and the basic mechanisms behind its creation, defining the possible ways of acquisition of EMG signals from muscles and further describing the characteristics of the EMG signal. We present already realized control systems for a robotic arm using EMG signals and show their way of controlling a robotic arm, we declare them with a regard to how many muscles do we record the EMG signal from and with respect to the method of processing that signal. After that, we propose a conceptual design of a system for EMG control of a robotic arm, and go through the parts of the system explaining the principle of operation of each, show the influence of the signal and determine the value of the necessary components. We use these insights determine the final schematic with help of which we design and build a printed circuit board and we populate it with components, and then we show how to connect the microcontroller to the EMG board.