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by MarkyV
Tue Mar 28, 2017 12:37 am
Forum: Beginners
Topic: 2 Servo Motor Control
Replies: 4
Views: 2833

Re: 2 Servo Motor Control

In my experience you won't be able to get a good PWM signal as you will get too much jitter using just outputs through the GPIO - my advice would be to use ServoBlaster : https://github.com/richardghirst/PiBits ... rvoBlaster.

Hope that helps

Mark
by MarkyV
Mon Mar 27, 2017 10:57 pm
Forum: Beginners
Topic: Power cord upgrade
Replies: 7
Views: 1029

Re: Power cord upgrade

Do you have anything else plugged into the Pi - USB peripherals, HATs, servos or cameras? - they can draw extra amps - a 2.5Amp 5V PSU should not cause this problem on a bare Pi3B - if it is just the Pi3B, screen and keyboard/mouse then you may have a faulty PSU.

Mark
by MarkyV
Mon Mar 27, 2017 9:40 pm
Forum: Troubleshooting
Topic: Pi Zero W periodic screen blanking
Replies: 1
Views: 692

Re: Pi Zero W periodic screen blanking

Not sure if it's the same issue - but found this : http://raspberrypi.stackexchange.com/qu ... n-flashing

Which seems to suggest it's a power issue to the monitor/settings of hdmi out - I know that doesn't make much sense but it's something to eliminate.

Mark
by MarkyV
Mon Mar 27, 2017 8:25 pm
Forum: General discussion
Topic: types of rasberry pi 3
Replies: 10
Views: 2505

Re: types of rasberry pi 3

Yay time for me to chip in again :)

There are lots of things you can do - but here is my offering - real getting started stuff :) : http://thepimaker.online/getting-started/

But you could also try the official sources of course - https://www.raspberrypi.org/help/

:) - have fun!

Mark
by MarkyV
Sat Mar 25, 2017 2:26 pm
Forum: Beginners
Topic: A couple of questions.
Replies: 4
Views: 653

Re: A couple of questions.

Hi, It would probably be good to get a starter pack - then you know that the parts have a fair chance of all working together - as for compatibility - this chart shows what can be emulated with RetroPie : https://github.com/RetroPie/RetroPie-Setup/wiki/Supported-Systems - so the answer is yes for PS...
by MarkyV
Sat Mar 25, 2017 11:07 am
Forum: Beginners
Topic: On Off Switch
Replies: 9
Views: 4791

Re: On Off Switch

Hi,

On the Pi3B the terminals are in a slightly different place - this page shows the differences : http://www.noveldevices.co.uk/rp-project-reset

Mark
by MarkyV
Sat Mar 25, 2017 6:51 am
Forum: Beginners
Topic: On Off Switch
Replies: 9
Views: 4791

Re: On Off Switch

There are various ways of doing this - you could have a look at:

http://www.raspberry-pi-geek.com/Archiv ... spberry-Pi

There is also a forum thread on this at: viewtopic.php?f=100&t=89030

Mark
by MarkyV
Fri Mar 24, 2017 8:01 pm
Forum: Troubleshooting
Topic: insufficient power source?
Replies: 8
Views: 1590

Re: insufficient power source?

The official Pi power supply I bought is rated as outputting 5V - 2A - I run exactly what you have described in terms of peripherals and it runs fine - I know it's not much help but what you are describing as a power supply should be adequate - so the next step is to check if it is actually supplyin...
by MarkyV
Fri Mar 24, 2017 7:29 pm
Forum: Beginners
Topic: Node Red Usage
Replies: 1
Views: 310

Node Red Usage

Hi all, I've been looking at Node Red and I was thinking of doing a getting started set of videos as it is quite a different concept than normal coding - the question I have (and this is really to teachers and kids(old or young ;) ) learning RPi programming as that is my focus) - is it something tha...
by MarkyV
Wed Mar 22, 2017 1:31 pm
Forum: Beginners
Topic: Want to have several applications with touch screen
Replies: 3
Views: 626

Re: I am lost!!

Hi, I think the search is not so good on these forums - I tend to go to Google: https://pidome.org/ http://lifehacker.com/build-a-diy-weather-forecast-display-with-a-raspberry-p-1784047653 https://opensource.com/life/15/11/organize-your-cooking-open-source-recipe-manager should start you off :) Hope...
by MarkyV
Tue Mar 21, 2017 10:54 pm
Forum: General discussion
Topic: Pi3B and PiZero
Replies: 5
Views: 744

Re: Pi3B and PiZero

If you mean can you take the card out of a 3B and put it in a zero and it will work - the answer for Raspbian is yes - I do it all the time.

Mark
by MarkyV
Mon Mar 20, 2017 11:55 am
Forum: General discussion
Topic: What to do w/ pie zero?
Replies: 8
Views: 1299

Re: What to do w/ pie zero?

I have a really groovy series to get you started with programming.
You can find it here: http://thepimaker.online/getting-started/

Enjoy :)

Mark
by MarkyV
Sun Mar 19, 2017 6:33 pm
Forum: Staffroom, classroom and projects
Topic: RPi as home computer for learning programming
Replies: 17
Views: 6992

Re: RPi as home computer for learning programming

If you want absolutely from the basics programming on RPi - I have produced a series of video tutorials - it's not official but it tells you the basics - It's from my 'Getting Started' series : http://thepimaker.online/getting-started/

Mark
by MarkyV
Sun Mar 19, 2017 6:23 pm
Forum: Beginners
Topic: Wireless GPIO for Raspberry Pi
Replies: 5
Views: 747

Re: Wireless GPIO for Raspberry Pi

I think you probably want several Pi zero Ws around the house but you will have to explain a bit more about what you want them to do before better advice can be given.

Mark
by MarkyV
Sun Mar 19, 2017 6:08 pm
Forum: General discussion
Topic: Is a PI 3 a viable desktop replacement?
Replies: 60
Views: 37089

Re: Is a PI 3 a viable desktop replacement?

If you keep your Pi3 clean and mean you can use it for all the things that the majority of laptop users do - when I first booted up my Pi3 I was impressed at the speed for such a little machine - my usual work computers are a Mac Pro and an i7 16GB Intel PC - having said that I won't be using the Pi...
by MarkyV
Sat Mar 18, 2017 7:18 pm
Forum: General discussion
Topic: Animation
Replies: 15
Views: 3055

Re: Animation

I would say that a Pi is not really a great platform to be creating animations on. Generally you will be wanting a computer with many times the capability of the Pi (in CPU and GPU terms) to create animations unless you like the feeling of pulling your own teeth out - ie. it will just take too long ...
by MarkyV
Fri Mar 17, 2017 9:35 pm
Forum: Beginners
Topic: what is the best way to do offline updates?
Replies: 10
Views: 2227

Re: what is the best way to do offline updates?

It may be a silly suggestion but I'll throw it out there - when our phoneline was down I bought unlimited 4g from Giff Gaff and set up my mobile as a wi-fi hotspot - which would provide you with the update capability you need ..... if you can get 4g :)

Mark
by MarkyV
Fri Mar 17, 2017 10:26 am
Forum: Beginners
Topic: Running Personally written Programs on Rasp. Pi
Replies: 8
Views: 930

Re: Running Personally written Programs on Rasp. Pi

I've got a really nice page on my blog about getting started with python and using i/o with the sense hat. Getting Started : http://thepimaker.online/getting-started/ Python with the sense hat (using i/o) : https://www.youtube.com/watch?v=a9lHeVIADSQ For GPIO - https://www.raspberrypi.org/blog/gpio-...
by MarkyV
Fri Mar 17, 2017 10:07 am
Forum: Beginners
Topic: loading retropie on pi zero
Replies: 2
Views: 407

Re: loading retropie on pi zero

Apparently a known problem - Try viewing this video and see if it is the same issue : https://www.youtube.com/watch?v=rvKHefzOTVc

I think that one is worth posting on my blog :)

Mark
by MarkyV
Thu Mar 16, 2017 2:12 pm
Forum: General discussion
Topic: Pi Zero / LCD / Buttons
Replies: 9
Views: 1677

Re: Pi Zero / LCD / Buttons

I think you will need a breakout board.

There are several options from Adafruit and Pimoroni


Mark
by MarkyV
Thu Mar 16, 2017 12:04 pm
Forum: Beginners
Topic: Power pack
Replies: 4
Views: 619

Re: Power pack

it says in the spec
2A internal switch (~2.5A peak limiting) means you can get 500mA+ from a 3.7V LiPoly/LiIon battery. We had no problem drawing 1000mA, just make sure your battery can handle it!
so theoretically I guess the 3B will run but as I said it depends what else is attached etc.

Mark
by MarkyV
Thu Mar 16, 2017 12:01 pm
Forum: Beginners
Topic: Power pack
Replies: 4
Views: 619

Re: Power pack

If it's the Powerboost 500 - with battery (from Adafruit?) - I suspect you may run into problems with the 3B as it will potentially draw more amps than the zero depending on what you are doing with it - I think also the connected battery will govern at what point the power source will fail.

Mark
by MarkyV
Mon Mar 13, 2017 8:19 pm
Forum: Français
Topic: Arrêter une lecture en boucle dans omxplayer
Replies: 8
Views: 1733

Re: Arrêter une lecture en boucle dans omxplayer

Have you tried Ctrl-C or CTRL-Z to stop the script?

Avez-vous essayé Ctrl-C ou CTRL-Z pour arrêter le script?

Mark
by MarkyV
Fri Mar 10, 2017 10:52 pm
Forum: General discussion
Topic: Pi Zero, all I see is an unknown device called BCM2708 Boot
Replies: 27
Views: 8396

Re: Pi Zero

You will need a mini HDMI cable-> screen, an SD card with and OS on it and probably a keyboard/mouse combination to plug into the micro USB port and of course some power (micro USB supplying 5V 1Amp+) http://ebookion.com/hardware/753-getting-started-with-raspberry-pi-zero.html http://www.wired.co.uk...

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