View Full Version : Schematic drawing software (simple)

08-29-2006, 01:56 AM
I need to draw a really simple circuit, but I want it to look neat. Is there any free software out there that I can just download, and is easy to use? For reference, I need to draw a DC motor connected to an electronic speed control, a battery, a voltmeter and an ammeter.

Another solution would be copying and pasting the symbols, but I couldn't find any high res images of these. Any help would be appreciated, thanks.

P.S. Is a DC motor a fixed value inductor?

Bruce Bates
08-29-2006, 02:20 AM
bulkhead -

Here is a rudimentary jpeg schematic drawing (attached) of that circuitry, without much detail, that I just tossed together with MSPAINT. At least it's a start :-)

Hope that is helpful.


Bruce Bates

Loopy Byteloose
08-29-2006, 04:16 AM
Free and simple.· The simple is the harder part.

Eagle software has a free one page version as shareware.· Just draw the schematic, don't make a board.· You have to learn to use their library though.

Parallax has its own font that can draw schematics in the SPIN IDE.· I am not sure how well it works to use the font with Notepad, but other claim they can do it.· I just use it inside the IDE and cut and paste -- seems faster.

Eagle will give you a very professional schematic, but it is a bit more of a learning curve.· When you want an image you can select export and it will give an nice 'bit map image' that is very detailed.

"If you want more fiber, eat the package.· Not enough?· Eat the manual."········

···················· Tropical regards,····· G. Herzog [·黃鶴 ]·in Taiwan

08-29-2006, 07:34 AM
Express PCB at http://www.expresspcb.com/·offer fairly good free software essentially for designing PCB's but they also·have a free program for designing schematics which has a library of symbols, motors, IC's, switches etc. etc.·(or you can create your own symbol library). Its also easy to use which is a plus.

Jeff T.

EDIT·: downloaded the Eagle software it looks pretty impressive.

Post Edited (Unsoundcode) : 8/29/2006 12:50:10 AM GMT

08-29-2006, 09:01 AM
Hmm, perhaps what I am looking for is a nice library that I can just copy and paste from instead of learning how to use more advanced software. Thanks for all the input, I'll check it out.

08-30-2006, 12:58 AM
tinycad.sourceforge.net/ (http://tinycad.sourceforge.net/)

Bad spellers of the world untie!