Schema

The recad.Schema module allows for drawing circuits. The drawing follows the basic structure containing pre-defined elements for use in a drawing. A common import structure is:

from recad import Schema
class recad.Schema(project, library_path=None)

The Schema

recad.Schema.load(path)

Load a new Schema from a file.

Parameters:

path – the file path

recad.Schema.write(self, /, path)

Write a new Schema from to file.

Parameters:

path – the file path

recad.Schema.plot(self, /, **kwargs)

Plot a schema

Parameters:

**kwargs – see below

Keyword Arguments:

  • theme – the color theme.

  • scale – Adjusts the size of the final image, considering only the image area without the border.

  • border – draw a border or crop the image.

Example Usage:

 1from recad import *
 2
 3schema = Schema("test-project")
 4schema.move_to((50.8, 50.8))
 5schema = (schema
 6    + LocalLabel("Vin").rotate(180)
 7    + Wire().right()
 8    + Symbol("R1", "100k", "Device:R").rotate(90)
 9    + Junction()
10    + Symbol("U1", "TL072", "Amplifier_Operational:LM2904").anchor("2").mirror("x")
11    + Junction()
12    + Wire().up().length(5)
13    + Symbol("R2", "100k", "Device:R").rotate(270).tox("U1", "2")
14    + Wire().toy("U1", "2")
15    + Symbol("GND", "GND", "power:GND").at("U1", "3")
16    + LocalLabel("Vout").at("U1", "1")
17)
18
19schema.plot(path = 'docs/_static/schema_opamp.svg', scale = 10)
first circuit