DAQ Testing and Plotting Signals

In lab this week, the amplifier and the electrodes were connected by soldering wires with alligator clips. Wires were also partially stripped in order to allow for a connection between the alligator clips, amplifier, and DAQ sensor. Using MATLAB, a code was produced to create a graphed stream of incoming DAQ signals. A filter was also encoded in the script to shield out noise and unwanted signals. Various plots were graphed when the script was activated, which included raw signals from the DAQ vs. time, filtered signals from the DAQ vs. time, and energy signals from the DAQ vs. time. The graphs of the raw signals vs. time and the filtered signals vs. time are visibly different; the raw signals are a lot more accurate but scattered, but the filtered signals have a much smoother, consistent graph.