Flowchart of the firmware

Overview

The software system was designed so that the light system, sound system and leaf shrinking mechanism could work independently. The main for loop only has 3 functions: senseSound(), senseLight(), and pullLeaves(), and can be used separately if needed. All functions are pseudo-parallel using timestamps from the millis() command. 


View our code on Github.

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Calibration Instructions

To calibrate the photo resistors:

• In LightSystem.h, set f_cal, br_cal, and bl_cal to zero
• In NewLightSoundLeaf.ino, set the parameter for SenseLight3 in the main loop to true
• Plug in the plant and place in normal lighting conditions, then open the Arduino serial monitor
• Note the differences in the three sensor values, and add a calibration value to each that makes them equivalent (for example, if the numbers were 783, 812, and 804 you could normalize to 800 and have the calibration values be 17, -12, and -4)

To calibrate the sound sensors:

• In SoundSystem.h, set f_cal, r_cal, and l_cal to zero
  
• ​In NewLightSoundLeaf.ino, set the parameter for senseSound in the main loop to true
  
• Plug in the plant and place in normal sound conditions, then open the Arduino serial monitor
  
• Note the differences in the three sensor values, and add a calibration value to each that makes them 0 (for example, if the numbers were 18, 45, and -10, the calibration values be -18, -45, and 10)

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For questions about calibration please email minhkhang.vu@students.olin.edu or luis.zuniga@students.olin.edu