(Sorry for the late update) In the past few weeks, we've been working on adjusting the LED light and to implement the calibration of our micro-plate reader. We made an aluminum layer to shelter from external light source and augment the intensity of light inside the optical instrument. After we successfully achieved it,  we moved our attention to the testing section( still working on it). 

The image above documents the making process of the aluminum sheer, we used a double layer aluminum to conceal the inside and outside of optical instrument and attached both side to a double face adhesive tape.

These two picture shows how our wires are connected, and each serves a specific function to the main board.