Go to advanced search

by mikerr
Wed Sep 12, 2018 3:16 pm
Forum: General discussion
Topic: Pi Card Imager - android app prepares SD cards without PC
Replies: 21
Views: 18527

Re: Pi Card Imager - android app prepares SD cards without PC

It is on google play, but that isn't required - the apk is elsewhere as well
e.g. apkfun : https://www.apk4fun.com/apk/89659/
by mikerr
Fri Aug 24, 2018 8:37 pm
Forum: Other projects
Topic: which rack - system is used here!?
Replies: 4
Views: 157

Re: which rack - system is used here!?

"lego mindstorms" is a kit that includes some electronics, the construction parts are "Lego technic".
by mikerr
Thu Aug 23, 2018 4:32 pm
Forum: Networking and servers
Topic: will i get wifi collision with 100 RPI in 3 cubic meter?
Replies: 6
Views: 295

Re: will i get wifi collision with 100 RPI in 3 cubic meter?

For 100 clients I'd consider using 2-3 AP's on different channels.

Many cheap router/AP's have trouble with large number if devices connected, but I've always found unifi AP's work well.
by mikerr
Mon Aug 20, 2018 9:00 pm
Forum: Python
Topic: QR scanner output using HID
Replies: 3
Views: 80

Re: QR scanner output using HID

by mikerr
Mon Aug 20, 2018 7:57 am
Forum: Python
Topic: QR scanner output using HID
Replies: 3
Views: 80

Re: QR scanner output using HID

Well that's not ASCII ... but I can "see" the letters there in the 3rd field, seem to be

ascii code = 3rd code + 93

[0, 0, 23, 0, 0, 0, 0, 0] => 23 => 23 + 91 => 116 = 't'

Code: Select all

codes = 23,8,22,23 
for code in codes:
    print chr(93 + code)
by mikerr
Fri Aug 17, 2018 4:18 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Desktop x86 Resolution change
Replies: 12
Views: 4020

Re: Desktop x86 Resolution change

fruitoftheloom wrote:
Fri Aug 17, 2018 10:59 am
The OP is not running Virtual Box :shock:
VMware equivalent then...

Virtual Machine > Install VMware Tools.
https://docs.vmware.com/en/VMware-Fusio ... 01D2B.html
by mikerr
Thu Aug 16, 2018 6:59 am
Forum: General discussion
Topic: how to run firefox when you click the internet button
Replies: 2
Views: 133

Re: how to run firefox when you click the internet button

Sorry, but what is a 'internet button'? Simply add a shortcut to FireFox to your Task bar. The one which is there is for Chromium (maybe that's what you call internet button' The internet icon is a shortcut to the current default browser. Change the default browser via update-alternatives : sudo up...
by mikerr
Fri Aug 10, 2018 6:54 pm
Forum: General discussion
Topic: RaspiCam lens for optical zoom
Replies: 6
Views: 3457

Re: RaspiCam lens for optical zoom

Is there any way to make a digital zoom in Python for Raspicam? Yes, with picamera: http://picamera.readthedocs.io/en/release-1.10/api_camera.html#picamera.camera.PiCamera.zoom 4x digital zoom, centered: import picamera with picamera.PiCamera(): camera.resolution = (640, 480) camera.start_preview()...
by mikerr
Thu Aug 09, 2018 7:36 am
Forum: General discussion
Topic: For me using the octopi distro wasted time, not real-time enough?
Replies: 15
Views: 680

Re: For me using the octopi distro wasted time, not real-time enough?

Are you using the camera with octoprint ?

Camera preview really slows it down with pi zero, only the pi3 can really handle the camera features.
by mikerr
Wed Aug 08, 2018 4:35 pm
Forum: Off topic discussion
Topic: Definition of ironic
Replies: 32
Views: 4609

Re: Definition of ironic

It's only Pie ... imagine you could get much more upset if Android R ended up called Raspberry Pie ! (now unlikely as they've used up the Pie name) So, we started with Raspberry Pi, there have been Orange Pi, Apple Pi, NanoPi, BananaPi, and now Android Pie. Context. Yes, most of that list are clearl...
by mikerr
Wed Aug 08, 2018 9:39 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Wifi Networks Displayed, but won't connect?
Replies: 4
Views: 139

Re: Wifi Networks Displayed, but won't connect?

you could try manually adding the details by editing /etc/wpa_supplicant/wpa_supplicant.conf

e.g.

Code: Select all

country=GB
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
	SSID="YOURWIFI"
	psk="password"
}
by mikerr
Wed Aug 08, 2018 9:24 am
Forum: Off topic discussion
Topic: Definition of ironic
Replies: 32
Views: 4609

Re: Definition of ironic

bensimmo wrote:
Wed Aug 08, 2018 8:38 am
Seems they are using a cherry pie, not a raspberry one?
Image
by mikerr
Sun Aug 05, 2018 9:48 am
Forum: C/C++
Topic: How the Heck does my RPI3 Complete a Program 1200% Faster than my HP Probook??
Replies: 5
Views: 655

Re: How the Heck does my RPI3 Complete a Program 1200% Faster than my HP Probook??

Probably debug build, there's a huge amount of expensive runtime checks enabled by default such as out-of-bounds array indexing and memory overrun detection https://randomascii.wordpress.com/2011/07/22/visual-c-debug-buildsfast-checks-cause-5x-slowdowns/ (although for some code it can be 100x slowdo...
by mikerr
Sun Jul 29, 2018 3:25 pm
Forum: Graphics, sound and multimedia
Topic: Multiple displays running simultaneously
Replies: 12
Views: 511

Re: Multiple displays running simultaneously

Do people only read the title ?!

He did say one pi per screen....

You could have a copy of the video on each pi, and start each one playing simultaneously via SSH.
by mikerr
Fri Jul 27, 2018 7:59 am
Forum: Advanced users
Topic: PXE boot before microSD
Replies: 7
Views: 325

Re: PXE boot before microSD

I don't think you can directly change the boot order, but you can selectively disable SD via GPIO: https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/bootflow.md 1. E.g hold gpio22 low and SD boot will be ignored, so would boot to PXE 2. Alternatively via software: renaming /bo...
by mikerr
Thu Jul 26, 2018 11:31 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Can I use my RPi to make a bootable usb(pc)x86 Debian?
Replies: 16
Views: 556

Re: Can I use my RPi to make a bootable usb(pc)x86 Debian?

You may need to turn off "secure boot" in your PC bios for the RPD x86 USB to boot up
by mikerr
Mon Jul 23, 2018 9:01 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Raspberry Pi For Desktop Resets
Replies: 1
Views: 97

Re: Raspberry Pi For Desktop Resets

Sounds very much like running the ISO without persistence.

Have you actually installed it to a virtual disk, or just running from the ISO mounted in VMware ?
by mikerr
Fri Jul 20, 2018 11:02 am
Forum: General discussion
Topic: Raspberry Pi 3 B vs. Dell Latitude E5500
Replies: 2
Views: 186

Re: Raspberry Pi 3 B vs. Dell Latitude E5500

In terms of CPU grunt, yes the dell is much much more powerful, but bigger, more power usage, noisier etc

For plex, that will mean the dell can do transcoding on the fly for clients.
The Pi3 can run plex fine, but without any transcoding.
by mikerr
Fri Jul 20, 2018 9:16 am
Forum: General discussion
Topic: A new level of seasickness - Or how I learnt to stop worrying and love the new website
Replies: 66
Views: 2790

Re: A new level of seasickness

Why not mention "new website theme" in the thread title ... you should know better, Dougie !
by mikerr
Fri Jul 20, 2018 9:05 am
Forum: General discussion
Topic: New homepage - nice job!
Replies: 9
Views: 475

Re: New homepage - nice job!

All those "Buy for business" links go to the same place as "Buy", which is just confusing. I like the projects section, particularly if you choose "browse all projects" you get a nice menu to filter by topic / hardware /software Nice to see blender in software... https://projects.raspberrypi.org/en/...
by mikerr
Sat Jul 14, 2018 9:55 am
Forum: General programming discussion
Topic: Question About Compiling RasPi Apps
Replies: 9
Views: 620

Re: Question About Compiling RasPi Apps

Well a Pi3 is much faster (> 10x) for compiling apps than a Pi Zero.

That's 100% compatible and far easier than messing with cross compiling on a PC
by mikerr
Fri Jul 13, 2018 7:32 am
Forum: Raspbian
Topic: How do I set default web browser?
Replies: 3
Views: 295

Re: How do I set default web browser?

Code: Select all

update-alternatives --config "chromium-browser"
by mikerr
Thu Jul 12, 2018 7:44 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Pixel For Pc
Replies: 20
Views: 833

Re: Pixel For Pc

While you should really just download the latest version,
running an update:

Code: Select all

sudo apt-get update && sudo apt-get dist-upgrade
will have the same effect and bring in the most recent drivers for WiFi etc.
by mikerr
Tue Jul 10, 2018 7:53 pm
Forum: General discussion
Topic: Are there 3D data available of the official Raspberry Pi case?
Replies: 4
Views: 245

Re: Are there 3D data available of the official Raspberry Pi case?

I think there was talk of cad files for the lid at release time (custom lids)
but it's easy enough to measure from the actual physical unit.

I did that to make my own custom lids - here's my original template:
https://www.tinkercad.com/things/5qPYHNU8diO

Go to advanced search