Problems in drug development and personalised disease treatments are the main impulse for the development of OoCs. At the Electronic Components, Technology and Materials (ECTM) group at TU Delft an OoC sensor has been developed and the design is now at a stage where a system can be developed to take the sensor out of the initial research environment, into a complete product that incorporates the sensor. In this thesis a design is proposed for a portable parameter analyser based around the STM32L4 microcontroller platform. It contains an instrumentation amplifier and a communication module to connect to an external device. A power consumption estimation is made for individual system components as well as for the system as a whole. From this it is concluded which components contribute the most to the power consumption and recommendations are made on how to decrease this power consumption.