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by steveb4pi
Sun Oct 22, 2017 8:24 pm
Forum: Beginners
Topic: Newbie Pitfall - BACKUPS don't restore (insufficient space)
Replies: 31
Views: 10867

Re: Newbie Pitfall - BACKUPS don't restore (insufficient space)

Point I'm trying to make is that even half-an-hour (or however long it takes) making a back-up is time well spent if you ever have to get things working again after a SD corruption .. .. and I would bet my .img against any 'incremental' or 'user files' alternative back-up anyday .. after a year or t...
by steveb4pi
Sun Oct 22, 2017 4:13 pm
Forum: Beginners
Topic: Newbie Pitfall - BACKUPS don't restore (insufficient space)
Replies: 31
Views: 10867

Re: Newbie Pitfall - BACKUPS don't restore (insufficient space)

Without wishing to get into a flame war :-) 1) '... lots of empty space' OK, if you don't know that on a PC, Windows will 'transparently' compress stuff for you, then storing big files of 'empty space' can be a concern (FYI, when you setup your Pi Backups folder, right click on the folder 'Propertie...
by steveb4pi
Sun Oct 22, 2017 3:22 pm
Forum: Beginners
Topic: I need help to run windows games on a PI.
Replies: 14
Views: 3273

Re: I need help to run windows games on a PI.

Sorry, but the B3 is way too slow for the average PC game .. in fact it can hardly run a modern web Browser with more than one tab open...and is hard pushed to run Android (which, if you do get it running, will be about the only way to 'download a game and run it' ) The B3 is about equivalent to a 2...
by steveb4pi
Sun Oct 22, 2017 2:34 pm
Forum: Troubleshooting
Topic: Is my raspberry pi zero w broken?
Replies: 2
Views: 910

Re: Is my raspberry pi zero w broken?

Whilst it's not hard to blow the Pi usb, I wouldn't think just plugging in a different hub would damage it .. There should be some indication of what's wrong in the boot-up status messages the Pi displays on the HDMI screen (you can use your TV if you don't have a 'real' display :-) ) PS Ummm .. I k...
by steveb4pi
Sun Oct 22, 2017 2:12 pm
Forum: Troubleshooting
Topic: Raspberry pi 3 downloading 1-100 bytes/second
Replies: 2
Views: 416

Re: Raspberry pi 3 downloading 1-100 bytes/second

When the servers are 'loaded', speed goes down .. and (of course) after every new release you (and milions of others) are in for days of frustration trying to download c... On the other hand, I've never got less than 10kb/s, so 100b/s does seem rather 'unusual' :-) At a guess, your WiFi is 'clashing...
by steveb4pi
Sun Oct 22, 2017 10:12 am
Forum: Troubleshooting
Topic: Problems of a kind I can not describe
Replies: 3
Views: 578

Re: Problems of a kind I can not describe

I assume you are using 'LITE' not l'NOOBS or Desktop (if you are using NOOBS / Desktop, you need a HD screen pluggind into the Pi and a Keyboard plugged into the USB socket plus it neds Internet acess so you still need the Ethernet cable so that means using a USB hub in the Pi zero) If you have LITE...
by steveb4pi
Sun Oct 22, 2017 9:47 am
Forum: Troubleshooting
Topic: HDMI earth /spike causing sd card corruption??
Replies: 14
Views: 2912

Re: HDMI earth /spike causing sd card corruption??

A power 'glitch (or low-voltage at the Pi) will often result in a reboot, however, 9 times out of 10 the SD card will be just fine .. (actually, after hundreds of times of just pulling the power-plug, I would even say 99 times out of 100 it's just fine) So, when you see the Pi reboot, if it ALWAYS '...
by steveb4pi
Sun Oct 22, 2017 8:56 am
Forum: Troubleshooting
Topic: Raspberry pi zero usb dongle, problem with internet sharing.
Replies: 4
Views: 1067

Re: Raspberry pi zero usb dongle, problem with internet sharing.

I managed to get ICS working, so the Pi can access the Internet ... see http://www.questions4steveb.co.uk/html/Raspberry_Pi/Using-the-Pi-Zero (scroll down a page or two to the frst diagram, which explains most of what's going on) HOWEVER, I was never able to actually download code from the Pi 'repos...
by steveb4pi
Sun Oct 22, 2017 7:35 am
Forum: Troubleshooting
Topic: PI Strange behaviour
Replies: 26
Views: 3836

Re: PI Strange behaviour

These days, a corrupted SD card is actually quite rare .. unless your app. is performing millions of write operations on the SD card that is SD cards have a 'write lifetime limit' yes, that's millions of writes, but with 'modern' Pi system software using the Windows trick of 'virtual memory' it's am...
by steveb4pi
Sat Oct 21, 2017 10:43 pm
Forum: Beginners
Topic: Newbie Pitfall - BACKUPS don't restore (insufficient space)
Replies: 31
Views: 10867

Re: Newbie Pitfall - BACKUPS don't restore (insufficient space)

I stand by my original post :- Google 'How to back-up my Pi' (just like any mewbie would) and see how many pages will suggest ''Win32 Disk Imager' .. on my 'top page' of results it was all of them .. Now try google 'pi SD card copier' (not that a newbie knows to 'ask' this). On my first page of resu...
by steveb4pi
Sat Oct 21, 2017 10:47 am
Forum: Beginners
Topic: Powering ZERO with Li-Ion cell
Replies: 7
Views: 2655

Re: Powering ZERO with Li-Ion cell

You can get basic 1200mAHr PowerBank from Poundland == this even comes with micro-USB-full-USB cable ! .. or go on eBay for a multi-cell PowerBank for longer run-time NOTE few PowerBanks allow recharge AT THE SAME TIME as power out i.e. when you plug in a USB power-block (into the PowerBankl microUS...
by steveb4pi
Sat Oct 21, 2017 10:37 am
Forum: Beginners
Topic: Powering Pi Zero with a 240V AC - 5V DC module
Replies: 14
Views: 5579

Re: Powering Pi Zero with a 240V AC - 5V DC module

Running mains into the 'project box' is never a good idea .. it's way too easy to fry the Pi (or the human :-).) Better to 'double use' some other cable with 12v or 24v == so what other 'connections' do you have to the Pi box ?? IF the PI box is wired to Ethernet, a DIY Power over Ethernet (PoE) sol...
by steveb4pi
Sat Oct 21, 2017 9:44 am
Forum: Beginners
Topic: Can I make PWM with GPIO
Replies: 11
Views: 1922

Re: Can I make PWM with GPIO

'Yes' == the Pi GPU has 2 PWM circuits built in, however they are normally used for 'Audio out' (stereo jack) - but the frequency response is clipped to audio by external circuits (you MIGHT get an accetable 5kHz waveform out of it). Depending on what you need it for, you could just 'play' .wav musi...
by steveb4pi
Sat Oct 21, 2017 9:24 am
Forum: Beginners
Topic: Pi 3 painfully slow (Raspbian)
Replies: 11
Views: 10736

Re: Pi 3 painfully slow (Raspbian)

B3 = 'entry level' ???? .. well. yes if we are speaking of Tablets and smart phones (or the dawn of Windows) The Pi CPU is a 'RISC' style machine, so the GHz should be 'discounted' by about /5 ... so 1GHz Pi is about the same as a 200MHz PC .. i.e. what we used to run Windows 95/98 on ... HOWEVER th...
by steveb4pi
Sat Oct 21, 2017 9:01 am
Forum: Beginners
Topic: Need help with "updating" and what command does what.
Replies: 10
Views: 3124

Re: Need help with "updating" and what command does what.

I've been in the computer industry long enough to have learnt one (or maybe two) vital lessons .. IF IT AIN'T BROKE DON'T FIX IT This really should be obvious == once you have your system working, make a back-up so you can get back to that exact same working system (when something hardware fails) an...
by steveb4pi
Sat Oct 21, 2017 8:33 am
Forum: Beginners
Topic: Potential use case thoughts
Replies: 2
Views: 505

Re: Potential use case thoughts

A Pi 3 is oiverkill == the Pi Zero will do this job just fine Depending on the protocol, you may be able to use the Pi 'serial command terminal' RS232 (but see WARNING below) which is 'exposed' on the i.o pins (holes, in the case of the Zero) == the drawback is that not all the flow control (Request...
by steveb4pi
Sat Oct 21, 2017 8:19 am
Forum: Beginners
Topic: Raspian Boot up never stoppes, can't login.
Replies: 5
Views: 804

Re: Raspian Boot up never stoppes, can't login.

If the problem is a corrupted SD card, then 'starting again' may well be your only choice ... HOWEVER a common cause of re-booting is a power supply problem ... since you mention home automation, I wonder if you are powering the Pi from some 'common' 5v supply that is also powering other devices .. ...
by steveb4pi
Sat Oct 21, 2017 8:08 am
Forum: Beginners
Topic: Newbie Pitfall - BACKUPS don't restore (insufficient space)
Replies: 31
Views: 10867

Newbie Pitfall - BACKUPS don't restore (insufficient space)

'Everyone' says, "To Backup your Pi, use Win32 Disk Imager to read the SD card and make a new .img" .. WRONG WRONG WRONG == what they DON'T say is, 9 times out of 10, when you come to 'restore' the backup .img) to a new 'same sized' SD card, Win32 Disk Imager refuses, saying 'Destination insufficien...
by steveb4pi
Sun Nov 27, 2016 4:59 pm
Forum: Off topic discussion
Topic: Any possibility for a small business owner to get some zeros
Replies: 19
Views: 3421

Re: Any possibility for a small business owner to get some z

There are 2 UK distributors and 2 in USA .. and that's it. In UK, Pimoroni limits you to one per order 'per day' (or perhaps 'every other day'). They ship to Sweden, however charge £4, so £4 PiZ + £4 shipping = £8 per Pi Zero. 'ThePiHut' is stricter == they cancelled my second order in 48Hrs and I'v...
by steveb4pi
Sun Nov 27, 2016 4:41 pm
Forum: Graphics, sound and multimedia
Topic: Dealing with RAM/swap "lag" spikes using samplers
Replies: 2
Views: 850

Re: Dealing with RAM/swap "lag" spikes using samplers

tmpfs is a RAM disk system that might help == you read your sampes off SD and compress them to a folder in tmpfs from where it should be fast enough to decompress 'on the fly' as needed.. You could maybe pipe the files via 'gzip' yourself (to compress/decompress under your own control) or use some m...
by steveb4pi
Sun Nov 27, 2016 2:56 pm
Forum: Other projects
Topic: DIY PI-TOP, rise against hoarding manufacturers !
Replies: 15
Views: 4061

Re: DIY PI-TOP, rise against hoarding manufacturers !

Display looks fine, seller even claims it's Pi compatble. Can't say anything about the PowerBank battery .. the link delivered me to a French site :-) Things to watch out for :- 1) Many PowerBanks can't/won't charge at the same time as delivering power to the USB outputs & those that do may 'glitch'...
by steveb4pi
Sun Nov 27, 2016 11:20 am
Forum: Advanced users
Topic: Make a video player with expiration protection
Replies: 1
Views: 606

Re: Make a video player with expiration protection

You are looking at DRM (Digital Rights Management) .. lots of (mega) expensive solutions exist however you need to be clear about what you are trying to achieve if you want to avoid turning your paying customers into non-paying 'pirates' (ever get fed up with being forced to view all that 'FBI warni...
by steveb4pi
Sun Nov 27, 2016 10:14 am
Forum: Other projects
Topic: Charging Circuit
Replies: 1
Views: 654

Re: Charging Circuit

I suggest using a PowerBank = for example the Tecknet iEP390 9600mAH supports both 'pass through' charging (i.e you can use it as a UPS) and has 2 USB outputs (o/p max 3.4A in total ) == a lot less hassle (and likely a lot less cost) Be warned than MOST PowerBanks DON'T support 'pass through' chargi...
by steveb4pi
Sun Nov 27, 2016 10:02 am
Forum: Other projects
Topic: RPI Peephole Cam w/Motion
Replies: 1
Views: 4211

Re: RPI Peephole Cam w/Motion

Likely problems :- 1) Will your Pi Operating System version 'X' recognise the VGA video 'grabber' ? (I believe the one you show comes with a little CD containing drivers for Mac/Windows .. this implies it would need drivers for the Pi ??) 2) Pi comes with a h264 video licence == your 'converter' wil...
by steveb4pi
Sun Nov 27, 2016 9:39 am
Forum: Other projects
Topic: Help Needed - Digital Sign
Replies: 4
Views: 1050

Re: Help Needed - Digital Sign

A Pi will just plug into the HDMI socket on the display .. and you can link the Pi to your LAN via WiFi or Ethernet cable and thence to the Internet from where it can 'fetch' your Google calender ..... The 'only problem' is the software .. instead of displaying the web page 'directly', the page 'cod...

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