docs: update readme with settings for generating gerbers

README.md

@@ -66,6 +66,43 @@ manufactured. The listed quantity is to assemble *both halves*.
 Note1: we need to construct our own M2 standoffs of the right length as they
 don't stock M2x9 female-female standoffs.
 
+# Generating gerbers
+Using KiCad 5.1.4, here's the settings to generate gerbers.
+
+Plot settings (should be the defaults):
+```
+Plot format: Gerber
+Included layers:
+  F.Cu
+  B.Cu
+  F.Paste
+  B.Paste
+  F.SilkS
+  B.SilkS
+  F.Mask
+  B.Mask
+  Edge.Cuts
+Plot foorprint values: yes
+Plot footprint references: yes
+Exclude PCB edge layer from other layers: yes
+Exclude pads from silkscreen: yes
+Default line width: 0.1mm
+Coordinate format: 4.6, unit mm
+```
+
+Drill settings:
+```
+Drill File Format: Excellon
+Oval Holes Drill Mode: Use alternate drill mode
+Map File Format: PostScript
+Drill Origin: Absolute
+Drill Units: Inches
+Zeros Format: Suppress leading zeros
+```
+
+The fix for the JLCPCB PTH layer error was to change the [oval hole drill
+mode](https://forum.kicad.info/t/jlcpcb-gives-me-warnings-on-drill-and-edge-cuts/17565/25).
+
 # Credit for Kicad symbols/footprints
 - [Kailh reversible footprints](https://github.com/daprice/keyswitches.pretty/blob/master/Kailh_socket_reversible.kicad_mod)
 - [P-08073 TACT reset switch footprint](https://github.com/kata0510/minisplit/tree/master/minisplit-footprint.pretty)

pcb/ergoslab.kicad_pcb

@@ -24,7 +24,7 @@
     (40 Dwgs.User user)
     (41 Cmts.User user)
     (42 Eco1.User user)
-    (43 Eco2.User user hide)
+    (43 Eco2.User user)
     (44 Edge.Cuts user)
     (45 Margin user)
     (46 B.CrtYd user)
@@ -87,7 +87,7 @@
       (mirror false)
       (drillshape 0)
       (scaleselection 1)
-      (outputdirectory "/tmp/tmp.o8ysDQPSpz"))
+      (outputdirectory "/tmp/tmp.RLDnsrcVKc/blah2"))
   )
 
   (net 0 "")
@@ -8150,7 +8150,7 @@
   (segment (start 180.505001 62.718999) (end 170.916299 72.307701) (width 0.25) (layer B.Cu) (net 55))
   (segment (start 179.33 53.73) (end 179.33 54.530998) (width 0.25) (layer B.Cu) (net 55))
 
-  (zone (net 0) (net_name "") (layer B.Cu) (tstamp 5DE6C110) (hatch edge 0.508)
+  (zone (net 0) (net_name "") (layer B.Cu) (tstamp 5DEF31D7) (hatch edge 0.508)
     (connect_pads (clearance 0.508))
     (min_thickness 0.254)
     (fill yes (arc_segments 32) (thermal_gap 0.508) (thermal_bridge_width 0.508))
@@ -11337,7 +11337,7 @@
       )
     )
   )
-  (zone (net 0) (net_name "") (layer F.Cu) (tstamp 5DE6C10D) (hatch edge 0.508)
+  (zone (net 0) (net_name "") (layer F.Cu) (tstamp 5DEF31D4) (hatch edge 0.508)
     (connect_pads (clearance 0.508))
     (min_thickness 0.254)
     (fill yes (arc_segments 32) (thermal_gap 0.508) (thermal_bridge_width 0.508))