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10/18/2023 Map Stopped Working?
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Pi pinouts

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(@cywyo85)
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Joined: 4 years ago
Posts: 4
Topic starter  

Can somebody tell me where to put the wires from my led to the pi?   I don’t want to use any of the other features I just want the lights to show on map.

 

thanks


   
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Mark Harris
(@markyharris)
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Joined: 5 years ago
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There is a sub-board that has schematics for the various build combinations. But it sounds like you are looking for this one; - Mark

image

   
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(@cywyo85)
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Joined: 4 years ago
Posts: 4
Topic starter  

@markyharris what’s the level converter?  Do I need it?   I’m not using a breadboard.  Do I need a breadboard?  I also have 460 bulbs


   
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Mark Harris
(@markyharris)
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So if I understand, you will be building a map with 460 LED's, correct?

So yes, you need to convert the digital out output of the PI which is 3.3v up to 5v that the LED's use. The cleanest way is to use the level converter. You can also find descriptions of using a Diode, and still others have used a single LED to do this as well. For me the Level converter is the best, since its designed to do exactly what we need. They are cheap and easily wired.

With so many LED's you will need to do a calculation of how much power will be used and purchase a 5v dc power supply that will easily support the power needs. Along with that, it will be wise to feed this power to various locations along the string of LED's. Otherwise, if you only connect the power to one end of the string the light levels will be lower (dimmer) on the other end.

You do not need a breadboard, however during the initial setup and testing it is a good idea to use one, otherwise you may be re-soldering some of your work, where a breadboard allows you to work out the bugs ahead of time, then you can solder everything into place. There are various quality of breadboards, so don't skimp because they can have have intermittent holes that can cause headaches.

With so many bulbs, it might be nice to include an ambient light sensor so you can dim it when the overhead lights are turned off. 

Can't wait to see some pictures of your build. Good Luck! - Mark


   
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(@cywyo85)
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Joined: 4 years ago
Posts: 4
Topic starter  

@markyharris I have a power supply to power LEDs it’s a computer charger that puts out 5v.   What I need to know is where on the pins of the Pi do the 3 wires from LED’s go?  I did a sectional chart before using same setup but a different software and it worked.   Just need to know which pins your program uses to talk to LED’s 


   
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Mark Harris
(@markyharris)
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Joined: 5 years ago
Posts: 557
 

The schematic shows the 3 pins that need to be connected. - Mark


   
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