Go to advanced search

by mikerr
Mon Oct 23, 2017 10:04 am
Forum: General discussion
Topic: Save energy for a Raspberry
Replies: 12
Views: 723

Re: Save energy for a Raspberry

The nearest you can get without adding hardware is temporarily disabling the wifi/ethernet/usb chips - this can be done in software, and can be brought back online without rebooting. with those off, the lowest pi consumption is around 66mA https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=1272...
by mikerr
Fri Oct 20, 2017 9:03 am
Forum: Cases
Topic: In search of a larger case
Replies: 10
Views: 538

Re: In search of a larger case

I use the WDLABS 6x6 case in a few instances where I want more room: https://i.imgur.com/4WN8vq9m.jpg http://wdlabs.wd.com/category/pidrive-enclosures/ Big enough for a pi + HDD, or 2 Pi - but I think you might need bigger if you want 2x pi plus psu ? Or there are various versions of the MediaPi cas...
by mikerr
Fri Oct 20, 2017 8:45 am
Forum: Off topic discussion
Topic: zero vs orange pi?
Replies: 11
Views: 809

Re: zero vs orange pi?

It should be mentioned that a large amount of threads here are basically linux / debian based - not actually pi specific - most answers could equally be applied to any other machine running a debian variant (Armbian, ubuntu on PCs etc) The Pi, or other SBC is often people's first exposure to linux a...
by mikerr
Tue Oct 17, 2017 11:12 am
Forum: Troubleshooting
Topic: Is this how NOOBS SD card directory should look like?
Replies: 9
Views: 454

Re: Is this how NOOBS SD card directory should look like?

In OSMC you can install samba from the app store.

That creates a network share so you can copy /paste over the network from your PC

Typing //RECALBOX in a PC should access RecalBox's webpage for tranferring ROMs
by mikerr
Tue Oct 17, 2017 10:52 am
Forum: General discussion
Topic: Project: Covert Recording in bait car using Rasberry Pi + Camera Module
Replies: 6
Views: 272

Re: Project: Covert Recording in bait car using Rasberry Pi + Camera Module

Anyone have the rough size of the file per hour of recording either at 720p or 1080p? This depends on the bitrate setting, and amount of noise/movement in the image. Default bitrate for raspivid is 17Mbps so potentially a maximum of 7GB an hour at 1080 but in practice will be much lower. Have a loo...
by mikerr
Tue Oct 17, 2017 8:53 am
Forum: General discussion
Topic: KRACK Key Reinstallation Attacks raspbian patch?
Replies: 15
Views: 2094

Re: KRACK Key Reinstallation Attacks raspbian patch?

Raspbian Jessie and Stretch are patched now

https://raspberrypi.stackexchange.com/q ... 3880#73880

Not wheezy though ?

As for routers, mikrotik were quick and already patched:

https://forum.mikrotik.com/viewtopic.php?t=126695
by mikerr
Mon Oct 16, 2017 2:17 pm
Forum: Beginners
Topic: [SOLVED] Pi Zero W - No overvoltage protection?
Replies: 13
Views: 439

Re: [SOLVED] Pi Zero W - No overvoltage protection?

Imperf3kt wrote:
Mon Oct 16, 2017 1:02 am
There've been a couple of people recently testing powering their Pi from a 3.7v lithium battery (with no boost circuit)
Apart from no USB and no HDMI, their Pis are working just fine
Actually many USB devices continue to work on 3.3v even if it's out of spec
by mikerr
Sun Oct 15, 2017 6:24 pm
Forum: Beginners
Topic: light weight distros ?
Replies: 6
Views: 213

Re: light weight distros ?

Take a look at dietpi.com or minibian https://minibianpi.wordpress.com/features/

or raspbian lite with gui:
https://sourceforge.net/projects/raspian-lite-gui/
by mikerr
Sun Oct 15, 2017 6:16 pm
Forum: Raspbian
Topic: Raspbian as OS for old tablet.
Replies: 7
Views: 418

Re: Raspbian as OS for old tablet.

Yes you can run full linux on android devices in various ways:

http://www.linux-magazine.com/Online/Fe ... e-to-Linux

Install debian, on which raspbian is based.
by mikerr
Thu Oct 12, 2017 2:01 pm
Forum: Automation, sensing and robotics
Topic: How to shrink my pi3 program into a single chip?
Replies: 11
Views: 520

Re: How to shrink my pi3 program into a single chip?

"Arduino" covers a lot, but many projects can be reduced to using a single bare ATmega328 chip, or the dinky 8 pin Attiny85 On ARM/pi you could use a Pi Zero to reduce size / chip count... But you need to tellus what your project is, and which features of the pi3 you're using. <grumpy old man talk:>...
by mikerr
Thu Oct 12, 2017 1:12 pm
Forum: Camera board
Topic: Text overlay over raspicam video stream (file system)
Replies: 7
Views: 419

Re: Text overlay over raspicam video stream (file system)

Well I wrote that code a few years back before raspivid/still had any overlay options, (original thread here: https://www.raspberrypi.org/forums/viewtopic.php?f=43&t=75737&p=543374#p543374) now raspivid has built in overlay options - that's the better method (or edit the raspivid source) Do you real...
by mikerr
Wed Oct 11, 2017 8:18 am
Forum: Using Raspberry Pi in the classroom
Topic: Pi desktop version does not have minecraft?
Replies: 6
Views: 592

Re: Pi desktop version does not have minecraft?

minecraft-pi uses the GPU so will only run on a physical Pi QEMU emulation will only emulate the ARM CPU not the GPU, so even that is a no go (I tried it) It IS however possible to use the minecraft-pi API on a PC, using a plugin for PC Minecraft : http://dev.bukkit.org/bukkit-plugins/raspberryjuice/
by mikerr
Wed Oct 11, 2017 7:59 am
Forum: Camera board
Topic: Text overlay over raspicam video stream (file system)
Replies: 7
Views: 419

Re: Text overlay over raspicam video stream (file system)

Raspivid has text overlay options: --annotate, -a Enable/set annotate flags or text Adds some text and/or metadata to the picture. Metadata is indicated using a bitmask notation, so add them together to show multiple parameters. For example, 12 will show time(4) and date(8), since 4+8=12. Text may i...
by mikerr
Thu Oct 05, 2017 6:34 pm
Forum: Windows 10 for IoT
Topic: Win10 & .NET framework 4 full on Raspberry Pi
Replies: 9
Views: 845

Re: Win10 & .NET framework 4 full on Raspberry Pi

Exagear costs money... You can do the same thing for free with qemu and WINE Either way it will be too slow to be of much use - think Pentium 300 speed ( I did get windows 98 running reasonably well though: https://www.youtube.com/watch?v=oDiLHFsnPWE ) A better idea is to find a Linux version of wha...
by mikerr
Wed Oct 04, 2017 7:41 am
Forum: Troubleshooting
Topic: When are Predictable Network Interface Names Assigned? - Stretch
Replies: 13
Views: 569

Re: When are Predictable Network Interface Names Assigned? - Stretch

[quote=wally333 post_id=1218190 Predictable names uses the device MAC to create the name the software sees. That means I can have a single /etc/dhcpcd.conf file that's common to all 14 of my raspberries. All your MACs will be different so how do you specify interface using "the same file for all pi...
by mikerr
Tue Oct 03, 2017 1:53 pm
Forum: Raspbian
Topic: Mesa driver much slower on Stretch than on Jessie
Replies: 95
Views: 4097

Re: Mesa driver much slower on Stretch than on Jessie

I was able to improve MESA performance 2x by regressing to the jessie version of one of the libraries, while still running stretch: Bare stretch: glxgears -info 123 frames in 5.0 seconds = 24.481 FPS edit /etc/apt/sources.list to add this at the end: deb http://mirrordirector.raspbian.org/raspbian/ ...
by mikerr
Tue Oct 03, 2017 9:18 am
Forum: Media centres
Topic: Make a RPI dvr shows for me and playback over-the-air shows on multiple devices for free.
Replies: 3
Views: 535

Re: Make a RPI dvr shows for me and playback over-the-air shows on multiple devices for free.

Yes you can use the pi as a DVR using TVheadend and a usb TV tuner.

Either under raspbian or there is a module for us inside LibreElec/Kodi too
by mikerr
Mon Oct 02, 2017 11:28 am
Forum: General discussion
Topic: If you built a fully loaded Raspbian
Replies: 18
Views: 839

Re: If you built a fully loaded Raspbian

Pre built images are a way of saving time. E.g. RPi could only distribute Raspbian Lite and not the full Raspbian GUI version, then make you apt-get all the rest - possible - but it would be tedious and probably take an hour or more at install. There may be room for another distro - but decide your ...
by mikerr
Sun Oct 01, 2017 10:45 am
Forum: General discussion
Topic: PoE
Replies: 16
Views: 2300

Re: PoE

(old thread - but PoE still relevent) I've just found these to convert normal 48v PoE down to 5V with micro USB plug: https://www.amazon.co.uk/DSLRKIT-Active-Splitter-Ethernet-Raspberry/dp/B01H37XQP8 https://www.amazon.com/DSLRKIT-Active-Splitter-Ethernet-Raspberry/dp/B01H37XQP8 No need for speciali...
by mikerr
Sun Oct 01, 2017 10:30 am
Forum: Advanced users
Topic: What is this symbol about?
Replies: 10
Views: 622

Re: What is this symbol about?

The OP doesn't mention it, but I'd guess he's using 2 different sd cards with different firmware
e.g. one for kodi / another for raspbian
by mikerr
Fri Sep 29, 2017 3:59 pm
Forum: Advanced users
Topic: High speed of Raspberry Pi Desktop (was Pixel) !?
Replies: 14
Views: 721

Re: High speed of Raspberry Pi Desktop (was Pixel) !?

Mainly the move to systemd and it's parallel scripts - arch got systemd first and always boasted much faster boot times.
by mikerr
Wed Sep 27, 2017 4:11 pm
Forum: Off topic discussion
Topic: Raspberry Pi for the post apocalypse survivalist.
Replies: 13
Views: 1247

Re: Raspberry Pi for the post apocalypse survivalist.

On the other hand there is a serious point at the bottom of all this. If, for whatever reason, the internet went out one day it would not be long before there are serious difficulties for all of us. That's one reason I keep an offline copy of wikipedia around (via rachel-pi 64GB sd https://rachelof...
by mikerr
Sun Sep 24, 2017 9:19 am
Forum: Camera board
Topic: Baremetal webcam in 15 minutes
Replies: 2
Views: 363

Re: Baremetal webcam in 15 minutes

I'll have a play to see how fast switch on to first picture can be done ! Previous best was 8 seconds from rainbow to photo taken (with arch). [edit] the ultibo version is about 3 seconds from plugging in power to camera preview shown on screen :lol: For the lazy, here's prebuilt boot files ready to...
by mikerr
Fri Sep 22, 2017 2:40 pm
Forum: General discussion
Topic: Pi Card Imager - android app prepares SD cards without PC
Replies: 17
Views: 3094

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

NOOBS loads but then gives me an error on the home screen which reads "File system is reporting the free space as 976624 clusters, not 975480 clusters." Sorry for the late reply - but this might help someone else: I think that error means the FAT32 filesystem is corrupt - usually caused by removing...
by mikerr
Fri Sep 22, 2017 2:29 pm
Forum: RISCOS
Topic: RISCOS Not on NOOBS?
Replies: 20
Views: 1223

Re: RISCOS Not on NOOBS?

Coincidentally I was just adding RISCOS to my android imager app (https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=170856&p=1203875) so this download may be of use: https://sourceforge.net/projects/raspbianjessie/files/RISCOS.zip/download [108 MB] Extract the zip to a blank SD as you would NO...

Go to advanced search