In the last week we have finished the electronic control unit of our robot. It consists out of a DC-DC converter for the power supply of the microcontroller, two motor drivers to control the DC-motors and two IR sensors. Our sumo bot is controlled by an Elegoo Uno and both IR sensors detect the white border line of the arena. We have tested the electronic control unit and it works well. Now we will mount the module into the housing of the robot. Afterwards we will finish the software.