Design of data logger with multiple SD cards

This paper describes the design of general data logger system which is able to store data from few input channels and having large memory space. The proposed data logging system is aimed to be able to store plenty quantities of data from analog signal over an extensive period of time so that it will be able to be left unattended for a quite long time. Besides the communication between microcontroller and memory unit are discussed in detail in this paper. The limitation of memory storage is also tested. A prototype of data logger is developed and tested to verify the concept mentioned before.