Process

After determining the functionality for the plant, I worked one module at a time. 

Module 1: Adding a Servo and determining its three positions. 0 degrees for "Need light", 90 degrees for "Satisfied", and 180 degrees for "listening to music". 

Module 2: Integrating the photocell to sense light and control the servo.

Module 3: Integrating the potentiometer to control the light levels.

Module 4: Integrating the piezo and push-button to control it.

Module 5: Working on the external form.

Flow:

If the light is not enough - Indicate with flag and blinking light.

If the light is enough - Indicate with flag and steady light.

If the button is pressed, play music - Indicate with flag and the plants "sing-along" light.