Michael Holland

In this lab, we used Mavic 2 Pro drones at different altitudes to conduct measurements on wind speed by comparing battery life of the drones hovering in place. Methods: The first step in this lab was to gather our supplies. The class members in lab got partners, and each partner group got a Mavic 2 Pro drone, landing pad, and two or more fully charged batteries from the Purdue Dispatch Center. We then headed to coordinates 40.44364180047488, -87.03272783607103. We set up the drones with landing pads in a row, spaced 5 meters apart. We each had different assigned altitudes so we lined up in order of increasing altitude, south to north. The altitudes for all of the partner groups were 3m, 25m, 50m, 75m, 100m, and 121m. My partner and I flew at 75m AGL. We set up and pre-flighted the drones on one battery, and when everyone was ready, we switched the batteries to a new fully charged one and started up at the same time. We then all took off and flew to our assigned altitudes while facing t...

 Creating a lap joint via soldering: The first step is to strip the wire to make the last 1/4 inch of the wire exposed metal. Do this on both ends. Next, you need to heat up and clean the soldering iron. You then have to coat each end of the stripped wire in melted solder wire. You do this by taking solder wire and putting it onto the soldering iron to melt it. Then simultaneously put the end of the electrical wire and the end of the soldering wire onto the soldering iron in the puddle of solder. This makes a nice thin coating of solder on the end of the electrical wire. Once you do this with both ends of the electrical wire, make another puddle of solder on the soldering iron, and stick the two ends of the electrical wire together, dip them both in the puddle at the same time, and quickly pull the ends out. Pull the electrical wire ends away quickly and the solder will cool and harden, connecting the two ends together. The connection should be a filleted connection, not a round co...