removing elevator test

labs/lab-3.md

@@ -185,7 +185,7 @@ Now that you have a completed circuit, take a picture of your setup and save thi
 
 ### 8. Collecting Data
 
-With everything plugged into the 9V and running, unplug the Arduino from your computer. Enjoy the portability of your new breadboard and walk around the building a little bit. Get the temperature to change dramatically by putting your sensor board into a freezer.  Wait for about 2-5 minutes to allow the temperature to adjust. Then carry your board to the Ford Robotics Building and go up to the top floor, shaking the package intermittently. This should provide plenty of data for all of your sensors!
+With everything plugged into the 9V and running, unplug the Arduino from your computer. Enjoy the portability of your new breadboard and walk around the building a little bit. Get the temperature to change dramatically by putting your sensor board into the cold chamber.  Wait for about 2-5 minutes to allow the temperature to adjust. Try rotating your circuit in different orientations so that each axis experiences some acceleration due to gravity, and walk outside to watch humidity change. This should provide plenty of data for all of your sensors!
 
 Go back to the lab and unplug the 9V now (unplug the battery and leave the wires connected to your board). Carefully remove the microSD from the adapter module, and plug it into your computer. You should see a `DATALOG.CSV` file. If you do not, or the file seems corrupted or very small, delete the file, plug the microSD card back in, and watch what the Serial monitor on your computer says while running the code.