Shutter Release trouble

[jmansonphoto]

Hey, I am quite new to all this so please excuse me for the basic question. I'm running a camera shutter release through a button with this code

Code: Select all

import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BOARD)

GPIO.setup(11,GPIO.IN, pull_up_down=GPIO.PUD_DOWN)

GPIO.setup(15,GPIO.OUT)

try:
        while True:
		GPIO.output(15, GPIO.input(11) )
                
except KeyboardInterrupt:
        GPIO.cleanup()

and i want to integrate it with this code so it takes several shots with a pause when I press the button.

Code: Select all

import RPi.GPIO as GPIO
from time import sleep

GPIO.setmode(GPIO.BOARD)

GPIO.setup(15, GPIO.OUT)

while True:
    GPIO.output(15, True)
    sleep(0.1)
    GPIO.output(15, False)
    sleep(4)

I have attempted many mash-ups with little success. Any help would be greatly appreciated while I'm still learning python

[paddyg]

something along the lines of:

Code: Select all

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BOARD)

GPIO.setup(11,GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(15,GPIO.OUT)
SHOT_PAUSE = 4.0
next_shot = 0.0

try:
  while True:
    tm = time.time()
    if GPIO.input(11) and tm > next_shot:
      GPIO.output(15, True)
      sleep(0.1)
      GPIO.output(15, False)
      next_shot = tm + SHOT_PAUSE
    time.sleep(0.01)
               
except KeyboardInterrupt:
  GPIO.cleanup()

I think it's better to pull the input pin up then connect it to GND (less things can go wrong) in which case you would need a 'not' in there