WISRD Research & Engineering Journal

Figure 28 . Left: LAG shining the green laser through the twin alignment pin holes. Right: The LAG’s safety features. The LAG has an on/off switch and a “continuity” momentary switch. 3.8 Mounting Camera/Pi to the Tank To set up for the experiment, the Raspberry Pi with camera and Laser Assisted Guide were fixed atop an adjustable tripod stand. Initially the camera was propped-up using items that were available in the lab such as a lab stool, a cup, and painters’ tape, however, since those items were not strong enough to withstand long use, a tripod stand was purchased to replace them. The tripod stand allowed for rapid height adjustment and combatted the uneven ground eliminating any wobble or rotation (Figure. 29).

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