1. Home
  2. Raspberry Pi Group
  3. It's all gone purple - again.

It's all gone purple - again.

Last year there was an update to the raspi camera driver that was needed to support the pi4.

Unfortunately it broke the v4l2 driver (bm2835 mmal) on the pi zero resulting in infra red light images changing from grey to purple.

A long and fruitless discussion with the guys at pi towers ended when they said that as I wasn't using raspistill or raspivid it was just tough.

I did find a workround that enabled a grey image that used "vcdbg set awb_mode 0". I inserted this in the file /etc/init.d/motion and I got back to greyscale images.

However I've just installed the latest rasbian (2020-05-27-raspios-buster-lite-armhf.img) and now the vcdbg command breaks the v4l driver completely. So I'm stuck once more with purple images.

I'm using the latest version of motion from the raspbian repository (4.1.1-1.1+b2)

Has any one here had this problem and found a solution? I really am losing the will to live trying to keep my "wildlife garden" cameras working.

--
Nev 
It causes me a great deal of regret and remorse 
that so many people are unable to understand what I write.
Reply to
nev young
Loading thread data ...

I know it's bad form to follow-up one's own post but help from another group has sorted this problem for me.

Thanks for looking.

--
Nev 
It causes me a great deal of regret and remorse 
that so many people are unable to understand what I write.
Reply to
nev young

Fantastic! But bad form to say you've solved the problem, but not saying how. If I may, what was the solution?

--

Chris Elvidge, England
Reply to
Chris Elvidge

In brief: install the latest version of motion direct from the development site

formatting link

configure to use mmalcam instead of /dev/video0

mmalcam_name vc.ril.camera mmalcam_control_params --awb greyworld

--
Nev 
It causes me a great deal of regret and remorse 
that so many people are unable to understand what I write.
Reply to
nev young

Cheers!

--

Chris Elvidge, England
Reply to
Chris Elvidge

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.