I'm not familiar with what software is available and cannot recognize the origin of this diagram. Does anyone know what software this is? I'm only guessing that it can perform simulation; it may just be for layout.

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    \$\begingroup\$ Looks like Fritzing. Note that Fritzing is generally disliked on EE.SE because it's very hard to read compared to real schematics. \$\endgroup\$
    – Hearth
    Oct 15, 2018 at 13:43
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    \$\begingroup\$ Looks like Fritzing. I don't recommend using it. Wiring diagrams (like in your example) hide information. When designing or troubleshooting a circuit, you need to see the function of each connection. With a wiring diagram, you see no functionality. You have to flip back and forth from circuit to datasheet to wiring diagram. \$\endgroup\$
    – JRE
    Oct 15, 2018 at 13:47
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    \$\begingroup\$ I'd suggest you learn to use something like KiCad [Edited by a moderator.] \$\endgroup\$
    – JRE
    Oct 15, 2018 at 14:06
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    \$\begingroup\$ ... @JRE The only problematic thing is that people assume wiring diagrams is the "right way" (or "one right way") engineers communicate about circuits. And that rightfully annoys them a lot. It used to annoy me a lot, too, but I'm a teacher now and patience has become my second name! ;-) \$\endgroup\$ Oct 15, 2018 at 14:16
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    \$\begingroup\$ … schematic and understood which purpose the cap and the resistor serve. Anyway, what I find insufferable is that fritzing (at least in every wiring diagram I've seen) doesn't show part names; it makes talking about things unnecessarily complicated ("the resistor on the right") and building unnecessarily hard. It's a bad practice. And it would be so easy to fix. Oh, and while I can certainly get out my color code table and reverse engineer the resistors, there's no standard when it comes to LEDs or capacitors, so this wiring diagram not even fulfills the job of unambiguously defining a build \$\endgroup\$ Oct 15, 2018 at 15:19

1 Answer 1


It is most likely Fritzing.

It is an educational free software quite popular among newbies and teachers. It can draw wiring diagrams like the one you posted, or true schematics and even PCB layouts.

It can't simulate the circuit, though.

As Felthry and JRE said in comments, using Fritzing is frowned upon on this site and by professional engineers because of the habit of newbies to post wiring diagrams instead of schematics.

A wiring diagram is to a schematic what a sketch of the exterior of a building is to its blueprints. It only gives a very partial and incomplete view of the thing you are going to build. So it is usually quite useless for understanding the real working of a circuit.

Fritzing in itself it is NOT a bad tool for a newbie, if you understand its purpose. It can be used to draw not too terrible schematics and this won't anger people here.

Just avoid asking questions describing your problem using a wiring diagram instead of a true schematic. This will rightfully annoy many engineers and even make some of them mad.

It's like a little kid showing his parents a crayon drawing of his electronic toy asking "how do it work this?". The parents are probably going to laugh at his naivety with affection. Of course if a teenager or a grown-up shows a wiring diagram to an EE with the same naivety, maybe "requiring" a coherent answer to his problem, the effect can be drastically different!

BTW, I've seen not many things that make most people here get annoyed so much as seeing a wiring diagram instead of a schematic (You are warned! :-)

Note: although seemingly the same thing, posting a photo of a real breadboard with a real circuit built on it (together with its schematic) will sometimes be useful to diagnose problems related to the actual wiring.


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