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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Anal Sci. 2016;32(1):35–40. doi: 10.2116/analsci.32.35

Fig. 2a.

Fig. 2a

A close-up view of the portable system. 1. LED current driver board. 2. Optical mounting containing dichroic mirror, LED, objective lens, and optical filter. 3. Photodiode and preamplifier board. 4. Positioning motors, seen here from the side. 5. Arduino microcontroller with stacked motor driver shield and amplifier and analog to digital converter shield connected to preamplifier via white USB cable. The system itself measures 12” wide × 11” deep × 8” tall and weighs approximately 10 lbs.