Thank you so much!

So 2,3,7,11, 12,15,16,21,22 are used by MCA?

According to the example demo file, it seems MCA uses 15,16,21,22 as well. No?

import RPi.GPIO as gp

import os

gp.setwarnings(False)

gp.setmode(gp.BOARD)

gp.setup(7, gp.OUT)

gp.setup(11, gp.OUT)

gp.setup(12, gp.OUT)

gp.setup(15, gp.OUT)

gp.setup(16, gp.OUT)

gp.setup(21, gp.OUT)

gp.setup(22, gp.OUT)

gp.output(11, True)

gp.output(12, True)

gp.output(15, True)

gp.output(16, True)

gp.output(21, True)

gp.output(22, True)

def main():

gp.output(7, False)

gp.output(11, False)

gp.output(12, True)

capture(1)

gp.output(7, True)

gp.output(11, False)

gp.output(12, True)

capture(2)

gp.output(7, False)

gp.output(11, True)

gp.output(12, False)

capture(3)

gp.output(7, True)

gp.output(11, True)

gp.output(12, False)

capture(4)

def capture(cam):

cmd = “raspistill -o capture_%d.jpg” % cam

os.system(cmd)

if **name** == “**main**”:

main()

gp.output(7, False)

gp.output(11, False)

gp.output(12, True)