RE: Car DVR with Raspberry Pi 2 and Pi Camera Board

G7OEA — Wed, 09 Nov 2016 22:18:39 GMT

Can you help out a total noob and most defiantly not a programmer. the last time i did any coding I was using a zx spectrum, when it was new btw.

I am trying to use his code on a pi zero with the camera. I can get the camera to show an image on the screen using the following code.

from picamera import PiCamera

from time import sleep

camera = PiCamera()

camera.start_preview()

sleep(10)

camera.stop_preview()

When I tried the code posted i got indent errors so tabbed in the code where python 3 told me. the code "runs" as in it doesn't throw up any errors. the code I am using is below. I have tweaked it to use the board pin layout rather than bcm. This was so I know what pins i was using and also this is why I changed the gpio pin to 21

import datetime

import picamera

import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BOARD)

GPIO.setup(21, GPIO.IN, pull_up_down = GPIO.PUD_UP)

while True:

GPIO.wait_for_edge(21, GPIO.FALLING)

dvrname = datetime.datetime.now().strftime("%y%m%d_%H%M%S")

with picamera.PiCamera() as camera:

camera.resolution = (1920, 1080)

camera.start_preview()

camera.start_recording('/home/pi/' + dvrname + '.h264')

GPIO.wait_for_edge(21, GPIO.RISING)

camera.stop_recording()

GPIO.cleanup()

Can anyone see where i am going wrong? this code is ideal for my drone project. Rather than a gopro I am using the pi and the video preview plan to send to my video osd ground link.

Thanking you kinndly,

Phil

RE: Car DVR with Raspberry Pi 2 and Pi Camera Board

balearicdynamics — Tue, 23 Jun 2015 19:43:45 GMT

Can't say other than repeating DAB. Great post and very nice project. I am too asking what about the cable length; I am thinking to use a different cable with two flat connectors on the side and a 1 mt long cable but I am wondering too if this is possible.

Enrico

RE: Car DVR with Raspberry Pi 2 and Pi Camera Board

DAB — Tue, 23 Jun 2015 19:11:22 GMT

Great post.

Did you notice any timing issues with the longer cable to the camera?

I wonder how long you could go before you ran into problems?

DAB