Week 7 (Outside Lab) - Insulation & Electrical Box

The team used this time to complete insulation of the relay with electrical tape, which is shown in Figure 1.

Figure 1. Relay completely insulated with electrical tape. 

The team also began construction of the box that will house all electrical components. This is basically a small cardboard box with three holes in it for cords that need to connect to external components. The box used, unmodified, is shown in Figure 2.

Figure 2. Cardboard box to be used for electrical component housing.

On Side 1 (shown in Figure 3), there is one hole for the power cord to plug into the wall outlet. On Side 2 (also in Figure 3), there are two holes: one for the USB cord from the Arduino to a computer, and one for the power cord running to the pump and water container. All holes have a slit running from the hole to the top of the cardboard, which allows insertion of the cords without threading everything through the holes.

Figure 3. Sides 1 and 2 of box after holes and slits have been cut for power cords.