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by MrGlasspoole
Thu May 24, 2018 5:42 pm
Forum: Python
Topic: 5110 LCD - code optimization, CPU usage
Replies: 0
Views: 208

5110 LCD - code optimization, CPU usage

I never did much with Python and wonder if its normal that this small script uses 18% CPU on a Pi Zero. I did remove the bars of CPU and RAM usage but that changed nothing. #!/usr/bin/env python # -*- coding: utf-8 -*- import time from datetime import datetime import locale import psutil import Adaf...
by MrGlasspoole
Thu May 24, 2018 5:37 pm
Forum: General discussion
Topic: Pi Zero timeserver capability
Replies: 6
Views: 439

Re: Pi Zero timeserver capability

@epoch1970, sure i will add a RTC for boot times that the clients don't get the wrong time.
by MrGlasspoole
Thu May 24, 2018 2:52 pm
Forum: General discussion
Topic: Pi Zero timeserver capability
Replies: 6
Views: 439

Re: Pi Zero timeserver capability

Yes i know this is something nobody can really answer. But i want to get a idea. This is just a home network and maybe someday 50 devices. I did look around and for example this one: https://www.meinbergglobal.com/english/products/modular-3u-sync-system.htm AMD Geode LX 800 (500 MHz, 128 KB L2 cache...
by MrGlasspoole
Thu May 24, 2018 1:04 pm
Forum: General discussion
Topic: Pi Zero timeserver capability
Replies: 6
Views: 439

Pi Zero timeserver capability

I did build a DCF77 timeserver with a Arduino and a Pi Zero. The Arduino receives and decodes the time signal and sends it over serial to the Zero. The Zero has a USB network adapter. Everything works, but i wonder if the Zero has enough power. Somebody has a rough idea how many network devices a Ze...
by MrGlasspoole
Thu Dec 14, 2017 3:41 am
Forum: Camera board
Topic: h264 and the lag
Replies: 7
Views: 1365

Re: h264 and the lag

Ok, did some more testing.
TCP gives me 800 and UDP 300 ms lag with GStreamer to GStreamer.

I really need help to figure out how to make a rtps stream with GStreamer that i can use on my NVR.
by MrGlasspoole
Sat Dec 09, 2017 1:53 pm
Forum: Camera board
Topic: h264 and the lag
Replies: 7
Views: 1365

Re: h264 and the lag

by MrGlasspoole
Sat Dec 09, 2017 11:36 am
Forum: Camera board
Topic: h264 and the lag
Replies: 7
Views: 1365

Re: h264 and the lag

These are all 'c' files.
I also downloaded v1.4.4 what the guy in the video used and it's the same.
This files are not compiled? But why does it work in that youtube video?
by MrGlasspoole
Sat Dec 09, 2017 10:00 am
Forum: Camera board
Topic: h264 and the lag
Replies: 7
Views: 1365

Re: h264 and the lag

I need rtps for my satellite receiver. I don't know what I'm doing wrong with UV4L but i tried now GStreamer to GStreamer on Windows and the lag seems to be Ok. Pi: ~# raspivid -n -t 0 -w 1640 -h 1232 -fps 25 -b 4000000 -vf -hf -a 4 -o - | gst-launch-1.0 -v fdsrc ! h264parse ! rtph264pay config-inte...
by MrGlasspoole
Sat Dec 09, 2017 2:01 am
Forum: Camera board
Topic: h264 and the lag
Replies: 7
Views: 1365

h264 and the lag

I'm trying to build a cam that i can view on my satellite receiver. There is a plugin but it does not work with mjpeg. Everything h264 i tried does not work that it is usable - the lag is horrible. I tried this tutorial: https://chriscarey.com/blog/2017/04/30/achieving-high-frame-rate-with-a-raspber...

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