Go to advanced search

by Gavinmc42
Wed Jul 18, 2018 3:15 am
Forum: Python
Topic: Charts from logged data
Replies: 4
Views: 105

Re: Charts from logged data

Going back years but with python I think I used plotlib or mathplotlib?
Later on I used dygraphs.js on a Pi webserver.
Highcharts.js was another one I have used.

Eventually I ended up using HTML5 with SVG and JS for the last few years.
Now I am learning OpenVG for hardware accelerated plotting.
by Gavinmc42
Wed Jul 18, 2018 3:07 am
Forum: Beginners
Topic: 3D character in Raspberry Pi using Blender, feasible?
Replies: 2
Views: 81

Re: 3D character in Raspberry Pi using Blender, feasible?

Can I build 3D characters/animations with Blender(or any other supported modeling software) and deploy and run in Raspberry Pi ? I know there're some hardware limitations, not sure if there's a workaround. Thanks in advance. Yes you can and there is not even much work around needed any more ;) http...
by Gavinmc42
Wed Jul 18, 2018 1:16 am
Forum: Raspbian
Topic: VC4 and Mesa Drivers Update Plan
Replies: 23
Views: 1238

Re: VC4 and Mesa Drivers Update Plan

My 4.14.44-v8 Gentoo64 is reporting version 18.1.2 It is not the current kernel which I think is 4.14.54? Gentoo64 is new to me too, trying to keep up can be tricky with new OS's :oops: Interesting, your Raspbian is reporting the old 0.4 Gallium driver. Sakaki's Gentoo64 is reporting the much newer ...
by Gavinmc42
Tue Jul 17, 2018 6:53 am
Forum: Raspbian
Topic: VC4 and Mesa Drivers Update Plan
Replies: 23
Views: 1238

Re: VC4 and Mesa Drivers Update Plan

Mesa has some utils perhaps glxinfo -B
es2_info?
I am still new at learning this stuff.
by Gavinmc42
Sat Jul 14, 2018 12:09 pm
Forum: Raspbian
Topic: VC4 and Mesa Drivers Update Plan
Replies: 23
Views: 1238

Re: VC4 and Mesa Drivers Update Plan

I though Ubuntu Mate was still an old version?
Is this the one?
https://ubuntu-mate.org/raspberry-pi/
Maybe Kivy needs the old drivers?
by Gavinmc42
Sat Jul 14, 2018 8:54 am
Forum: OpenGLES
Topic: Star Citizen on the Raspberry Pi?!
Replies: 91
Views: 3102

Re: Star Citizen on the Raspberry Pi?!

Hey Tim, Paddy, it has been just over 6 years since Liz made the Pi3D announcement. Big difference now. My current approach is to provide a simple set of classes that can be used to create a great game / app without too much hard graft - I'd love to see something like Scratch mixed with Unity on the...
by Gavinmc42
Wed Jul 11, 2018 1:24 pm
Forum: Gentoo
Topic: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPI3B+)
Replies: 53
Views: 8446

Re: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPI3B+)

Hey, which is the lower power Pi2? 32ibt 2836 or 64bit 2837? I suppose just for Ethernet gadgets the Pi2 rev 1.2 would be better than Pi3B or 3B+. Is there a Pi2 rev1.3 with the metal top 2837 clocking at 1.4GHz? Probably not, need a PCB redesign to get the heat out, 1.3GHz? But old lan chip, so not...
by Gavinmc42
Wed Jul 11, 2018 12:57 pm
Forum: Gentoo
Topic: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPI3B+)
Replies: 53
Views: 8446

Re: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPI3B+)

Not all Pi2 manufacture uses the bcm2837, some are still made with the bcm2836.
Hmm that could be confusing if I needed a lower power WiFi-less 64bit Pi ;)
BCM2836 rev 1.1 , BCM2837 rev 1.2?
by Gavinmc42
Wed Jul 11, 2018 10:34 am
Forum: Automation, sensing and robotics
Topic: Two 6V motors through RPi3B
Replies: 19
Views: 445

Re: Two 6V motors through RPi3B

A USB battery bank if it can output 2+ Amps should be able power the Pi.
DO NOT power the Pi directly from 7.2V.
by Gavinmc42
Wed Jul 11, 2018 2:42 am
Forum: Gentoo
Topic: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPI3B+)
Replies: 53
Views: 8446

Re: Updated 64-bit Gentoo Image for RPi3 Released (now also for RPI3B+)

The old Pi2 uses the BCM2836 SoC, the newer Pi2 uses the BCM2837.
Old 32bit only, new 32/64bit.
So this should work on the new Pi2, but I don't have any.

Gentoo32?
I have only found DIY build instructions, no ready to go image?
by Gavinmc42
Tue Jul 10, 2018 1:40 pm
Forum: Graphics programming
Topic: 3d graphics libraries that run on the Pi 2 that aren't slow?
Replies: 23
Views: 847

Re: 3d graphics libraries that run on the Pi 2 that aren't slow?

Here is what OpenGLES looks like when done by an expert viewtopic.php?f=68&t=214695&start=50 Tim has tried this on a Zero but it gets hot so the VC4 must be working hard. Is there a way to find out how hard the VC4 is working when doing mesa/OpenGL/GLES? Does the VC4 have a way to report resource u...
by Gavinmc42
Tue Jul 10, 2018 1:30 pm
Forum: OpenGLES
Topic: Star Citizen on the Raspberry Pi?!
Replies: 91
Views: 3102

Re: Star Citizen on the Raspberry Pi?!

Yep 50fps, cool stereo cargo hold, cheap ZTE Blade phone and VR Box goggles seemed to work. Must work different downunder, I ended up staring at a wall or floor once moving stopped. Just added another thing to learn to my list, VR on Android :D Exercise machine is bluetooth? Use Microbit as handheld...
by Gavinmc42
Mon Jul 09, 2018 5:24 am
Forum: Beginners
Topic: Bit overwhelmed trying to schedule a watering project (Pi3 +4 channel)
Replies: 13
Views: 333

Re: Bit overwhelmed trying to schedule a watering project (Pi3 +4 channel)

I have even used shell script to read and write GPIO pins. Cron calls the shell script. I did set up the GPIO's on boot with code like this. #!/bin/sh echo "17" > /sys/class/gpio/export echo "18" > /sys/class/gpio/export echo "21" > /sys/class/gpio/export echo "22" > /sys/class/gpio/export echo "23"...
by Gavinmc42
Mon Jul 09, 2018 4:16 am
Forum: OpenGLES
Topic: Star Citizen on the Raspberry Pi?!
Replies: 91
Views: 3102

Re: Star Citizen on the Raspberry Pi?!

There is a single Raglan reconstruction image on Wikipedia. Made me wonder if Wikipedia can do WebGL? The page has lots of words about how it would have looked like in it's glory but a WebGL walk around would be nice. How well will your code translate to WebGL JS? The next demo will allow you to add...
by Gavinmc42
Mon Jul 09, 2018 2:34 am
Forum: General discussion
Topic: Two mechanically broken micro sd cards - Raspberry Pi Zero design fault?
Replies: 45
Views: 3655

Re: Two mechanically broken micro sd cards - Raspberry Pi Zero design fault?

First complainer has made 5 posts, second complainer has made 1 post.
Too much time has been wasted even if they are actual cases.
These two cases have too many zeros after the decimal point on the percentage of 20Million Pi's.

Some people are just plain clumsy too.
by Gavinmc42
Sun Jul 08, 2018 9:17 am
Forum: OpenGLES
Topic: Star Citizen on the Raspberry Pi?!
Replies: 91
Views: 3102

Re: Star Citizen on the Raspberry Pi?!

Typically, the castle did take a couple of weeks or so ;) So you did not go down to the nearest castle and 3D model it an few hours then just to test a bigger model ;) How much National Trust stuff has been 3D modeled? Some nice laser range finder modules around now. Add them to Zero W with GPS and...
by Gavinmc42
Sun Jul 08, 2018 2:21 am
Forum: OpenGLES
Topic: Star Citizen on the Raspberry Pi?!
Replies: 91
Views: 3102

Re: Star Citizen on the Raspberry Pi?!

You just happen to have a Castle obj? How long it it take you to do? I don't really understand the tile engine in the VC4, but there maybe ways to use that to increase fps. No idea how optimized the OpenGL/ES drivers are, generic or VC4? GPU Drivers get improved all the time as people tweak them. Ar...
by Gavinmc42
Sat Jul 07, 2018 2:00 pm
Forum: OpenGLES
Topic: Star Citizen on the Raspberry Pi?!
Replies: 91
Views: 3102

Re: Star Citizen on the Raspberry Pi?!

... it just goes to show how little power is required to produce some amazing stuff at such low cost! Yep, and the possibility of doing it all including the modeling and textures on a Pi is really interesting to me. Gentoo64 comes with Gimp too, just need to figure out those missing icon images in ...
by Gavinmc42
Fri Jul 06, 2018 2:15 am
Forum: Gentoo
Topic: ebuilding 64bit games
Replies: 8
Views: 337

Re: ebuilding 64bit games

Thanks for the ebuild guide links, it was on my list to find them one day. This b4a/Blender does stuff I did not expect, it basically installs a build system where you can make new versions of Blender at anytime. This makes it extremely hack-able and this seems to be part of it's attraction with use...
by Gavinmc42
Fri Jul 06, 2018 12:19 am
Forum: Graphics programming
Topic: 3d graphics libraries that run on the Pi 2 that aren't slow?
Replies: 23
Views: 847

Re: 3d graphics libraries that run on the Pi 2 that aren't slow?

Yikes! Things are getting confusing... I still would like to try open gl es, because the glxgears openGL test runs at about 60 fps without anything else running, and open gl es shoulden't be much worse... You make that glxgears window full screen you find out how bad OpenGL is at the moment. es2gea...
by Gavinmc42
Thu Jul 05, 2018 2:50 pm
Forum: OpenGLES
Topic: Star Citizen on the Raspberry Pi?!
Replies: 91
Views: 3102

Re: Star Citizen on the Raspberry Pi?!

No idea how to do Raspbian screenshots. Bforartists compiles and works in Raspbian :D How well it works I have no idea yet. Ok pretty slow, - sudo raspi-config enable OpenGL, reboot. Whoops I think I just broke Raspbian, not rebooting. So far Gentoo64 is faster but has icon button image issues. Rasp...
by Gavinmc42
Thu Jul 05, 2018 2:37 pm
Forum: Gentoo
Topic: ebuilding 64bit games
Replies: 8
Views: 337

Re: ebuilding 64bit games

Hi Sakaki, need to fix some dependencies. I think OpenColor? Or maybe just some path issues, it could even be no make for aarch64 issues. I did get just get it to compile on Raspbian with the icon images :D I have no idea how to do ebuilds or PR? Not sure how to fix it but it was relatively painless...
by Gavinmc42
Thu Jul 05, 2018 12:45 pm
Forum: Official Foundation Display
Topic: New Screen
Replies: 14
Views: 465

Re: New Screen

Eric Anholt has tweaked the DSI code and so it should be easier to make other DSI screens now.
But I don't know of any yet.

Does anyone else know of third party DSI screens?
Perhaps RPT are working on some?
by Gavinmc42
Thu Jul 05, 2018 12:30 pm
Forum: Wanted
Topic: Engineer needed to build breakout boards - Old "AirPi" project
Replies: 9
Views: 676

Re: Engineer needed to build breakout boards - Old "AirPi" project

In some cities, especially in China air particle counts is the most important information. Honeywell make some that seem to be better than the Sharp one. https://sensing.honeywell.com/sensors/particle-sensors. They need lots of indoor and outdoor versions. Inside, add a CO2 sensor to warn those keep...
by Gavinmc42
Thu Jul 05, 2018 11:46 am
Forum: OpenGLES
Topic: Star Citizen on the Raspberry Pi?!
Replies: 91
Views: 3102

Re: Star Citizen on the Raspberry Pi?!

Anyone a build deps expert?
Need to fix the image icons on the buttons ;)
And yes it does work, you just need to guess icons.

You know there was a Blender pocket edition using OpenGLES, long time ago.

Go to advanced search