Schematic drawing software
I use ProSchematic ( schematic drawing software ) for all diagrams and
schematics on this site (except those bits of data sheets on some pages).
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||Advantages of ProSchematic are:
* Unlimited pins.
* Unlimited library parts.
* Unlimited schematic page size.
* Graphic diagram drawing layers.
* Unlimited netlisting for pcb creation.
* Low cost.
* Easy to use.
CLICK image for larger view
As you can see there are three control panels as well as the
menu and main schematic screen.
Common actions (large buttons)
The top panel contains large buttons which display the
most used controls (below this are smaller buttons for less frequently used
operations e.g. text size, color control etc).
Note: You can access
all the tools using the buttons or hotkeys e.g. Alt-w Wire
Select tool and you can see each hot key by opening the Tools
Draw a schematic using four main buttons.
All you need are:
I have highlighted above the four tool buttons (in the above list)that you need to start drawing a schematic
- You can use all the others as
you progress through drawing your schematic (and as you need them when the
drawing becomes more complex).
- Library part
selector/manager. (The 3-books symbol).
- Select tool. (The
- Wire draw tool.
(The line with 'wire' text).
- No-connection -
at a pin. (The X ).
Initiallly though these four are enough to draw schematics.
Then check the schematic using the netlist tool in the process panel - although
it does netlisting it also checks the schematic for errors e.g. unconnected
pins or duplicate parts etc.
- Select a part using the library part selector..
- Place the part
- Stop part placement (click right or hot escape
- Use the wire draw
tool to draw wires between pins.
- Use the no-connection
to set pins as unconnected.
- Use the select
tool to move parts or wires around the schematic.
Note: 'no-connects' tell the netlister
accept a pin that has no wire connection - just a useful way of ensuring that
you think about every pin in the design as you have to put the 'nc' in
Schematic drawing software : Proceses
On the top left is a process panel
that gives easy access to the main processes that you need in drawing a
schemaitc progressing from design to the final netlist.
These include pin review, netlisting and BOM output (Bill Of Materials).
Schematic drawing software : Attributes
Beneath that is the attribute panel that shows all the data for
the currently selected part - this can include your own data e.g. manufacturer
Attributes are pieces of data associated with a part - some are internal data
such as the part information (for a multi part symbol) but you can add your own
data such as Manufacturer, cost - any data you like.
Note: The BOM (Bill Of Materials - shopping list!)
generator is customizable so you can output this data to
Schematic drawing software : Libary
The library has many different parts pre-made but if a part
does not exist then its easy to create a new
one as the library editor uses the same interface as the schematic tool
- except for one control - the pin control.
All you do is start the library editor and fill in a few bits of information
(e.g. symbol name, symbol prefix, number of parts in the symbol etc. then on to
the library editor. Just draw your symbol and add pins to it with the pin
tool then click OK - and add to the library - and its done ready for use.
Schematic drawing software : PCB
As well as checking the schematic the netlist tool generates
the netlist which you can output in Tango format so you can import that into a
Schematic drawing software : Layers
An unusual feature of this tool is that it has layers and these allow you to
create complex diagrams that have detailed backgrounds. This type of feature
is more usually found on graphics programs.
Note that as well as adding backgrounds to a complete image you can add colored
backgrounds to individual schematic blocks e.g. for an IC part (this background
can be grouped with the part to keep background and part together).
Here's an example of a diagram created with the layer functionality:
The solderless bread board is on layer 6 while everyting else is on layer 1 so
you can move all items on layer 1 without selecting anything on layer 6. It's
just as if there was a fixed image in the background.
Download schematic drawing software FREE Trial
Sign up for MicroZine
(the free microcontroller
ezine) and you can get the schematics from this site - in ProSchematic format :
this gives you a head start in creating your own schematics.
End of schematic drawing software page.
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