Task 1: Make the PhotoCell oscillate around the setPoint.

Figure 1: PID Photocell
Task 2: Use Python to plot your reselts.

Figure 2: Python script.

Figure 2.1: PID control plotted using Python (Figure 2.); Low pass filter was used in the circuit.
Task 3:
Fix the set point everytime the button is pressed.

Figure 3: Increasing set point plotted using Python (Fig 2.).