deploy: 7f10a71

.buildinfo

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+# Sphinx build info version 1
+# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
+config: 31ae1e12a478ed48155d70bc5acbb7c5
+tags: 645f666f9bcd5a90fca523b33c5a78b7

CNAME

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+circuitpainter.blinkinlabs.com

_sources/advanced_usage.rst.txt

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+Advanced Usage
+==============
+
+The goal of circuitpainter is to make the most common parts of PCB generation
+easy, and you might want to do things that this API doesn't directly support.
+
+Note that the underlying pcbnew API is not finished, and will likely be
+different between even minor KiCad versions. Using the python help() function
+on these object references is a good way to explore their options, though it
+gets complicated because they are themselves thin wrappers over the C-language
+pcbnew library. Eventually, you'll need to dig through the KiCad source
+to figure out how things are supposed to work, and don't forget to check the
+bug tracker if things aren't working correctly, because it probably is a bug
+and there might be a workaround / fix.
+
+Extended object properties
+--------------------------
+
+Circuit painter aims to keep circuit creation simple, but there are extra configuration
+settings on many objects that you might want access to. To facilitate this, all
+functions that create a PCB object will also return a reference to that object,
+so that you can modify it.
+
+For example, create a rectangular zone, and save the reference to it:
+
+    .. code:: python
+
+        painter.layer("F_Cu") 
+        zone = painter.rect_zone(0,0,10,10)
+
+Then, modify the zone properties using the pcbnew api:
+
+    .. code:: python
+
+        zone.SetIsRuleArea(True)
+        zone.SetDoNotAllowCopperPour(True)
+        zone.SetDoNotAllowVias(False)
+        zone.SetDoNotAllowTracks(False)
+        zone.SetDoNotAllowPads(False)
+
+Board configuration
+-------------------
+
+Many of the board configuration options (stackup, DRC rules, etc) are
+stored in the board design settings. For example, to create a 4-layer board
+with some different DRC settings:
+
+    .. code:: python
+        
+        import pcbnew
+        settings = painter.pcb.GetDesignSettings()
+        settings.SetCopperLayerCount(4) # Change to a 4-layer board design
+        settings.m_CopperEdgeClearance = pcbnew.FromMM(0.1) # Set the copper-to-edge spacing to 0.1mm
+
+Note that we are importing 'pcbnew' here, in order to use the FromMM() function
+to convert a measurement from mm to KiCad's internal units.
+
+Updating boards / adding manual edits
+-------------------------------------
+
+Circuit Painter is great for automating parts of designs that are highly repetitive,
+but is less effective for more mundane tasks such as wiring up a fancy LED array to
+a microcontroller. On this end, everything that CircuitPainter creates is placed into
+a single group. When you make manual additions to the board, be sure not to put your
+changes into the auto-generated group. Later, if you want to re-generate the automated
+portion of your design, you should be able to just delete that group, then start
+Circuit Painter by passing it the file name:
+
+    .. code:: python
+
+        painter = CircuitPainter('my_file.kicad_pcb')
+
+New objects will then be added to that board, in a new group.
+
+.. autosummary::
+   :toctree: generated

_sources/api.rst.txt

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+API
+===
+
+.. autosummary::
+   :toctree: generated
+
+.. automodule:: circuitpainter
+   :members: CircuitPainter
+   :undoc-members:

_sources/getting_started.rst.txt

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+Getting Started
+===============
+
+Start by creating a drawing context:
+
+   .. code:: python
+
+		from circuitpainter import CircuitPainter
+		painter = CircuitPainter()
+
+Using the painter object, you can draw non-conductive and conductve shapes,
+footprints, and text onto the PCB.
+
+First, set the layer to place the object on (tip: use
+print(painter.layers.keys()) to show all available layers):
+
+	.. code:: python
+
+		painter.layer('F_SilkS')
+
+Next, draw some non-conductive objects:
+
+	.. code:: python
+
+		painter.circle(0,0,3) # Draw a circle with radius 3 at the board origin
+		painter.line(0,0,10,10) # Draw a line from the board origin to (10,10)
+		painter.circle(10,10,3) # Draw a circle with raidus 3 at position (10,10)
+
+So far, there hasn't been any visual indication of what you're making.
+To get a preview of what your design looks like, use the preview()
+function:
+
+	.. code:: python
+	
+		painter.preview()
+
+This will save the design to a temporary location, then open it in the
+KiCad editor:
+
+ .. image:: _static/images/example-two-lines.png
+  :width: 400
+
+It's good for seeing the project, but be careful! The file
+will be deleted (along with any changes you make), as soon as you close
+the window. If you do want to save your board at this time, use the 'Save As'
+feature before exiting the editor!
+
+To change the width of lines, use the width() command:
+
+	.. code:: python
+
+		painter.width(0.5)
+		painter.line(0,0,10,0) # line with width 0.5mm
+		painter.width(1)
+		painter.line(0,5,10,5) # line with width 1mm
+		painter.width(2)
+		painter.line(0,10,10,10) # line with width 2mm
+
+ .. image:: _static/images/example-line-widths.png
+  :width: 400
+
+You can change where and at what angle features are added, by using the
+translate() and rotate() features:
+
+	.. code:: python
+
+		painter.translate(10,10)
+		painter.rotate(30)
+		painter.rect(-5,-5,5,5) # Rectangle is drawn at a 30 degreen angle, centered at (10,10).
+
+ .. image:: _static/images/example-rotate-rect.png
+  :width: 400
+
+Calling them multiple times will stack the transformations (they are
+calculated as a 2d transformation matrix)
+
+	.. code:: python
+
+		painter.translate(10,10)
+		painter.rect(-5,-5,5,5) # Rectangle is drawn centered at (10,10).
+		painter.translate(10,10)
+		painter.rect(-5,-5,5,5) # Rectangle is drawn centered at (20,20).
+		painter.translate(10,10)
+		painter.rect(-5,-5,5,5) # Rectangle is drawn centered at (30,30).
+
+ .. image:: _static/images/example-translate-rect.png
+  :width: 400
+
+Saving and restoring the applied tranformation is done using push_matrix()
+and pop_matrix(). (Note: This is implemented as a stack, and multiple pushes can be nested):
+
+	.. code:: python
+	
+		for angle in range(0,360,30):
+			painter.push_matrix() # Save the current transformation settings
+			painter.rotate(angle)
+			painter.translate(10,10)
+			painter.rect(-5,-5,5,5)
+			painter.pop_matrix() # Restore previous transformation settings
+
+ .. image:: _static/images/example-push-pop-rect.png
+  :width: 400
+
+Besides lines and rectangles, there are other basic shapes such as arc(), cirle(), and polygon().
+
+Drawing shapes is ok but the real fun comes from adding components. To add a component,
+first use the library editor in KiCad to find the library and footprint name for
+the part you want to place. Then, you can add them to your board using the footprint()
+command:
+
+	.. code:: python
+	
+		painter.layer('F_Cu')
+		painter.footprint(0,0,"LED_SMD","LED_0805_2012Metric")
+
+ .. image:: _static/images/example-add-led.png
+  :width: 400
+
+This placed the part, but it won't work well as a part- it's not wired up, so it
+won't actually function! Let's add some nets, and a resistor because that
+is nicer to the LED. Note that CircuitPainter doesn't know or care about what net
+names you assign to what footprints, so be sure to double or triple check that
+your circuit is correct:
+
+	.. code:: python
+	
+		painter.layer('F_Cu')
+		painter.footprint(0,0,"Resistor_SMD","R_0805_2012Metric",nets=['gnd','led_n'])
+		painter.footprint(5,0,"LED_SMD","LED_0805_2012Metric",nets=['led_n','vcc'])
+		painter.track(1,0,4,0)
+
+ .. image:: _static/images/example-connect-led.png
+  :width: 400
+
+Note: In this example, we are manually drawing a track that just happens to line up
+with the centers of the two pads that we want to connect. To see a more exact way
+to accomplish this by looking up the positions of each pad, see the asterix example
+project.
+q
+Also note that we didn't specify a net name to assign to the track. pcbnew is able
+to figure this out because the starting postiion of the track overlapped with the
+second resistor pad, so it assigned the same net to track.	
+
+One LED and resistor is cool, but not that impressive (and honestly more work than
+just doing it by hand). However, we can put this into a loop and combine it with
+the previous translation operations, to make a ring of LEDs:
+
+	.. code:: python
+
+		for angle in range(0,360,30):
+			painter.push_matrix()
+			painter.rotate(angle) # Rotation and translation for the next resistor/led combination
+			painter.translate(5,0)
+			painter.layer('F_Cu')
+			painter.footprint(0,0,"Resistor_SMD","R_0805_2012Metric",nets=['gnd',f'led_{angle}'])
+			painter.footprint(5,0,"LED_SMD","LED_0805_2012Metric",nets=[f'led_{angle}','vcc'])
+			painter.track(1,0,4,0)
+
+			painter.pop_matrix()
+  
+ .. image:: _static/images/example-led-ring.png
+  :width: 400
+
+Not bad for a few lines of code!
+
+To make a complete board, here is the [rest of the owl](https://knowyourmeme.com/memes/how-to-draw-an-owl):
+
+	.. code:: python
+	
+		from circuitpainter import CircuitPainter
+		painter = CircuitPainter()
+		
+		painter.no_designators() # Don't show reference designator names on the board silkscreen
+		painter.layer('F_Cu')
+		painter.width(.2)
+		
+		for angle in range(0,360,36):
+			painter.push_matrix() # Save the current transformation settings
+			painter.rotate(angle)
+			painter.translate(5,0)
+			painter.footprint(0,0,"Resistor_SMD","R_0805_2012Metric",nets=['gnd',f'led_{angle}'])
+			painter.footprint(5,0,"LED_SMD","LED_0805_2012Metric",nets=[f'led_{angle}','vcc'])
+			painter.track(1,0,4,0) # Connect the resistor to the LED
+			painter.track(-1,0,-2,0) # Connect the resistor to ground
+			painter.via(-2,0)
+			painter.track(6,0,7,0) # Connect the LED to vcc
+			painter.via(7,0)
+			painter.pop_matrix()
+		
+		# Fill the back of the board with a copper zone, and assign it to the 'vcc' net
+		painter.layer('B_Cu')
+		painter.circle_zone(0,0,14,net='vcc')
+		
+		# Add a battery connector to the back
+		painter.layer('B_Cu')
+		painter.footprint(0,0,"Battery","BatteryHolder_Keystone_3000_1x12mm",nets=['vcc','vcc','gnd'])
+
+		# Make the board shape to a circle
+		painter.layer("Edge_Cuts")
+		painter.circle(0,0,14)
+		
+		painter.preview()
+
+ .. image:: _static/images/example-rest-of-owl.png
+  :width: 400
+
+Note that we've added a battery connector, vias to connect power and ground from each of the LEDs,
+and a circular board edge to make it look a little prettier. It's not a bad idea to check DRC:
+
+.. image:: _static/images/example_led_ring_drc.png
+  :width: 400
+
+One you are satisfied with the design, you can either save it for further editing in KiCad
+with the .save() command, or go straight to a gerber with the .export_gerber() command.
+
+For more complete examples, see the scripts in the examples directory.
+
+.. autosummary::
+   :toctree: generated

_sources/index.rst.txt

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+.. Circuit Painter documentation master file, created by
+   sphinx-quickstart on Mon Jun 24 12:21:15 2024.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Circuit Painter
+===============
+
+.. image:: _static/images/lotus_leds.png
+  :width: 400
+
+Circuit painter is a creative coding tool for making functional printed
+circuit boards.
+
+Inspired by the simplifed drawing language of Processing, this tool provides
+an environment for designing PCBs using basic geometric shapes such as lines,
+arcs, and polygons. The tool maintains a drawing 'context' that applies a
+translation and rotation matrix to all calls, making it simple to replicate
+circuit features at differnt points across a circuit board. Functional PCB
+components such as part footprints can also be placed, and connected together
+logically using 'nets'.
+
+Circuit painter works as a front end / wrapper for `KiCad's pcbnew <https://www.kicad.org>`_.
+
+For more backgrond on the project, see `Matt's Hackaday Berlin talk <https://www.youtube.com/watch?v=9XV9PSsmMkk>`_ about Circuit painter.
+
+:doc:`installation`
+   How to install Circuit Painter.
+
+:doc:`getting_started`
+   Getting started tutorial
+
+:doc:`advanced_usage`
+   Tips and tricks for extending the use of Circuit Painter
+
+:doc:`notes`
+   Additional Notes
+
+:doc:`api`
+   Function Reference
+
+.. Hidden TOCs
+
+.. toctree::
+   :maxdepth: 2
+   :hidden:
+
+   installation
+   getting_started
+   advanced_usage
+   notes
+   api
+   genindex