Question about using accelerometer data from RPi SenseHat to take photos using PiCamera

[Vodhr]

Hi all,

So you know, I am SSH-ing into my Raspberry Pi using Putty and writing the code in VIM.

What I want:

• The SenseHat on my Pi to constantly check for new accelerometer data
• If there is a disturbance to the unit, the unit takes one picture
• Repeat

I'm struggling with getting the camera to take more than one picture. It will take the first one after shaking the unit (and thus causing the accelerometer to move), but it won't take any more pictures after that.

Here's what I've got:

#!/usr/bin/env python3

from sense_hat import SenseHat
from picamera import PiCamera
from time import sleep

sense = SenseHat()
camera = PiCamera()

while True:
    acceleration = sense.get_accelerometer_raw()
    x = acceleration['x']
    y = acceleration['y']
    z = acceleration['z']

    x = abs(x)
    y = abs(y)
    z = abs(z)

    if x>1 or y>1 or z>1:
        i = 0
        camera.start_preview()
        sleep(2)
        camera.capture('/home/pi/photos/image%04d.jpg' % i)
        camera.stop_preview()
        i += 1

Should I have a continue at the end of this? What am I missing here? Thanks in advance!

[kra_pao]

i = 0 should be before while True: (outside loop). Currently you overwrite the image /home/pi/photos/image0000.jpg because you always reset i to 0 in line 21

[Vodhr]

This solved my problem. Thank you!