Breadboard Help!

Discussion in 'The Projects Forum' started by michael.cantalore, Jun 25, 2013.

  1. michael.cantalore

    Thread Starter New Member

    Jun 25, 2013
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    Hi all,

    I'm extremely new to circuitry, and am learning bits and pieces with the Make:electronics e-book and a little kit I picked up from radioshack, and its a lot of fun! I'm trying to do a little project and am being a bit impatient about it because its something I really want to build! Issue is i'm struggling to translate the circuit diagram into a good breadboard configuration, and I'm really worried that if I mess it up I might blow up the capacitors or something and take out an eye! (I've heard stories, and I'm slightly nervous...)

    I'm basically trying to breadboard this circuit (and can't clearly see the breadboard photo thats on the website), so am seeking some much needed help! Full credit to Jason Poel Smith for drawing up this circuit diagram - it looks great - if only I could build it now and start using it in my room!!!

    Please help! Thank you all for your time and kindness in helping me :)
     
  2. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
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    Look you need to chill and calm the hell down ... Because you aren't really saying anything or even asking a question....


    So ask a question and everyone who wants to will help ...
    If the circuit is in the make book I can help because I am in the process of read and working through it too ..Also we need all the info you have with schematics and all documentation too please..
     
  3. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    Where is the circuit?
     
  4. tubeguy

    Well-Known Member

    Nov 3, 2012
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    Welcome to the forum.
    For eye protection, wear safety glasses.

    You will get a lot of help if you post a link to your circuit diagram. If you don't know how, just ask :)
     
  5. michael.cantalore

    Thread Starter New Member

    Jun 25, 2013
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  6. LDC3

    Active Member

    Apr 27, 2013
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    It's very unlikely that you can cause capacitors and resistors to explode with the 6 to 9 volts supplied by batteries. About the worst is some burnt fingers from touching something really hot. You might short out a component if you really try.
    When you start using a power supply, the chance of getting hot components is even higher. Since power supplies can supply a lot more current than batteries, some items can get really hot (even when working properly). Although you should have enough experience by then not to wire up components incorrectly. The problem is with shorts that heat up and short out other components.
     
  7. tubeguy

    Well-Known Member

    Nov 3, 2012
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    Google 741 op-amp specs.
    The circuit diagram needs power supply connections which aren't shown (unless I missed something ) :)
     
  8. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    Do you have all the components?

    Are you going to use a solderless breadboard first?

    Or are you going straight to a perfboard?
     
  9. michael.cantalore

    Thread Starter New Member

    Jun 25, 2013
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    I've purchased all the components I need, and was going to use a solderless breadboard for the first attempt.
     
  10. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    It's a simple circuit. Pause the video and draw a sketch of how he laid it out on the solderless breadboard. Make sure you understand how the solderless breadboard holes are interconnected, and start connecting parts. Start with the two 741s; connect them to the power and ground rails, and then start adding the other components. Layout isn't particularly critical in this circuit.
     
  11. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    Here is (in my opinion) an improved schematic; it shows the IC pin numbers, component numbers, and capacitor polarity. In addition, it uses a regulated 12V power supply and includes a current limiting resistor for the LEDs. Also attached is a photo of my solderless breadboard assembly.
     
    Last edited: Jun 26, 2013
  12. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
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    Where did you get the power supply ???
     
  13. Austin Clark

    Member

    Dec 28, 2011
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  14. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    It's actually my own design.
     
    Last edited: Jun 27, 2013
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