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The MagPi Magazine - Aimed at learners - Printed edition Kickstarter

bgirardot

(I have no affiliation with The MagPi Magazine other than happy reader)

 

The MagPi Magazine is an online magazine dedicated to the Raspberry Pi. It focuses on learning about programmming (Python, Scratch, C/C++) and beginner to intermediate level projects of all sorts.

 

I have found it to be very approachable for total new comers to programming and hobbiest tools like the Rasbperry Pi and its GPIO pins.

 

I read a lot of questions that often go along the lines of "I am totally new to programming, where should I start?" and I feel very comfortable telling them to checkout the MagPi magazine among other suggestions.

 

If you have not checked out the MagPi before, I encourage you to do so, even if it is just so you are familer with yet another resource for the Raspberry Pi community. If you want to learn about programming, I would suggest you just start with Issue #1 and work your way forward.

 

I, probably like others, sometimes enjoy having a hard copy of project guide to work with. The MagPi is basically on-line only, but they are currently doing a Kickstarter project to produce a printed set of their first 8 issues.

 

Here is a link to the main MagPi website and if you are interested in getting or supporting the printed editions there is a link to their Kickstarter project:

 

http://www.themagpi.com/

  • in reply to michaelkellett

    Hi

    It seems I have just been banned from the RPi forum - at least the topic is locked - maybe not the same thing.

    I closed the datasheet a few minutes ago but it is here http://products.semelab-tt.com/pdf/magnatec/BCU81.pdf

    Yes, I now see your point, I had not before, I apologise. With this small base current the thing probably (possibly, maybe, certainly ) won't saturate, the motor will stall and the current will be limited only by hFE x Ib and the thing will glow.  3 alkalines in the power supply have a fairly low resistance.

    This is only for the lower transistors - the upper ones glow all the time when switched on, at least they will until they burn out.  If they worked as the designer thinks the lower transistors might be provided with Vce=4V5.

    Actually it is hard to discuss this because all the various issues get mixed uo, the lower transistors should never feel the 3V as the top ones will die first , but if they didn't.....

    I did offer to discuss all this with the designer by PM but he prefers to keep it all in the open. God knows why. He is trying to defend the indefensible and doesn't even know it.

    Rant now completed, thank you for reading - if you did.

    Regards

    Graham

     

     

     

    Date: Sun, 9 Dec 2012 17:58:41 +0000

    From: messages@element14.com

    To: grahamedriver@hotmail.com

    Subject: - Re: The MagPi Magazine - Aimed at learners - Printed edition Kickstarter

     

     

     

     

     

     

     

     

          

               

                    

     

                         

     

                              

       

         

       

     

        Re: The MagPi Magazine - Aimed at learners - Printed edition Kickstarter

     

     

        created by Michael Kellett in Raspberry Pi - View the full discussion

     

     

     

    @Graham,

    Not sure if we have the same data sheet but mine shows that the transistor will not saturate at 2.5A with the 8.8mA base current it will get - that's why you'll get 2.5V across it. I was assuming the power rail issue was fixed since th earticle talks about putting 2.5A into the motor. (We're back to the "so many things wrong" issue again )

    I'm attempting to attach the data sheet I found.

    (attempt failed !)

    Google for BCU81 Magnatec

    Michael Kellett

     

     

     

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  • in reply to grahamedriver

    Graham & Steve,

     

    Thanks for the links and and recs, I'll have a look.

     

    Steve