multi-spectral imaging system

spectrometer.py

from __future__ import division
import time
import Adafruit_PCA9685

from pyueye import ueye
import ctypes
import datetime

pwm = Adafruit_PCA9685.PCA9685(address = 0x40) #1st 
pwm1 = Adafruit_PCA9685.PCA9685(address = 0x41) #2nd
pwm2 = Adafruit_PCA9685.PCA9685(address = 0x42) #3rd
pwm.set_pwm_freq(1000)
pwm1.set_pwm_freq(1000)
pwm2.set_pwm_freq(1000)

spec = "avo_leaf" #name of speciment

led = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31]
lux = [900,901,902,903,904,905,906,907,908,909,910,911,912,913,914,915,916,917,918,919,920,921,922,923,924,925,926,927,928,929,930,931] #temporary initial value

for x,y in zip(led, lux):
    if (x < 15):
       pwm.set_pwm(x,y,0) #led on 1st mux
    elif ( x>14 and x<32):
       pwm1.set_pwm(x-16,y,0) #led on 2nd mux 
   elif (x>31 and x<33):
       pwm2.set_pwm(x-32,y,0) #led on 3rd mux
   else:
       print(x)
    hcam = ueye.HIDS(1)
    pccmem = ueye.c_mem_p()
    memID = ueye.c_int()
    hWnd = ctypes.c_voidp()
    ueye.is_InitCamera(hcam, hWnd)
    sensorinfo = ueye.SENSORINFO()
    ueye.is_GetSensorInfo(hcam, sensorinfo)
    ueye.is_AllocImageMem(hcam, sensorinfo.nMaxWidth, sensorinfo.nMaxHeight,24, pccmem, memID)
    ueye.is_SetImageMem(hcam, pccmem, memID)
    nret = ueye.is_FreezeVideo(hcam, ueye.IS_WAIT)
    if (nret == 0):
      print("camera")
    else:
      print("____problem!!!____")
    FileParams = ueye.IMAGE_FILE_PARAMS()
    FileParams.pwchFileName = spec + "_led_"+str(x+1)+"_cam_"+ datetime.datetime.now().strftime("%s") + ".bmp"
    FileParams.nFileType = ueye.IS_IMG_BMP
    FileParams.ppcImageMem = None
    FileParams.pnImageID = None

    nret = ueye.is_ImageFile(hcam, ueye.IS_IMAGE_FILE_CMD_SAVE, FileParams, ueye.sizeof(FileParams))
    if (nret == 0):
      print("camera")
    else:
      print("____problem!!!____")
    ueye.is_FreeImageMem(hcam, pccmem, memID)
    ueye.is_ExitCamera(hcam)

    if (x < 15):
       pwm.set_pwm(x,0,0) #led off 1st mux
    elif ( x>14 and x<32):
       pwm1.set_pwm(x-16,0,0) #led off 2nd mux 
   elif (x>31 and x<33):
       pwm2.set_pwm(x-32,0,0) #led off 3rd mux
   else:
       print(x)