Fab automation (#2)

- Use KiKit for fab automation
- Add splitflap scripts for exporting pcb pdfs, and switch to splitflap script for 3d rendering (for consistency with fab automation)
- Added support in 3d rendering scripts for soldermask & silkscreen colors, option to skip virtual components
- Added silkscreen to base and screen pcbs for commit and date info

electronics/scripts/generate_pdf.py

@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+#   Copyright 2015-2021 Scott Bezek and the splitflap contributors
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+import argparse
+import logging
+import os
+import pcbnew
+import shutil
+import subprocess
+
+from collections import namedtuple
+
+import pcb_util
+
+electronics_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+logging.basicConfig(level=logging.DEBUG)
+logger = logging.getLogger(__name__)
+
+
+def run(pcb_file):
+    output_directory = os.path.join(electronics_root, 'build')
+    temp_dir = os.path.join(output_directory, 'temp_pdfs')
+    shutil.rmtree(temp_dir, ignore_errors=True)
+    try:
+        os.makedirs(temp_dir)
+        plot_to_directory(pcb_file, output_directory, temp_dir)
+    finally:
+        shutil.rmtree(temp_dir, ignore_errors=True)
+
+
+def plot_to_directory(pcb_file, output_directory, temp_dir):
+    board_name = os.path.splitext(os.path.basename(pcb_file))[0]
+
+    with pcb_util.get_plotter(pcb_file, temp_dir) as plotter:
+        plotter.plot_options.SetDrillMarksType(pcbnew.PCB_PLOT_PARAMS.NO_DRILL_SHAPE)
+        plotter.plot_options.SetExcludeEdgeLayer(False)
+
+        LayerDef = namedtuple('LayerDef', ['layer', 'mirror'])
+        layers = [
+            LayerDef(pcbnew.F_Cu, False),
+            LayerDef(pcbnew.B_Cu, True),
+            LayerDef(pcbnew.F_SilkS, False),
+            LayerDef(pcbnew.B_SilkS, True),
+            LayerDef(pcbnew.F_Mask, False),
+            LayerDef(pcbnew.B_Mask, True),
+            LayerDef(pcbnew.F_Paste, False),
+        ]
+
+        pdfs = []
+        for layer in layers:
+            plotter.plot_options.SetMirror(layer.mirror)
+            output_filename = plotter.plot(layer.layer, pcbnew.PLOT_FORMAT_PDF)
+            pdfs.append(output_filename)
+
+        _, map_file = plotter.plot_drill()
+        pdfs.append(map_file)
+
+        output_pdf_filename = os.path.join(output_directory, '%s-pcb-packet.pdf' % (board_name,))
+
+        command = ['pdfunite'] + pdfs + [output_pdf_filename]
+        subprocess.check_call(command)
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser('Generate a pdf of the PCB')
+    parser.add_argument('pcb_file')
+    args = parser.parse_args()
+    run(args.pcb_file)
+