Added a constructor function for PCBs.

PCB text can now specify a colour.
Added SOT23_6, TSOT23_8 and CAP1210 SMD packages.
Added ESP-201 Wifi Module PCB.
Added ESP12F Wifi module.
Added tiny_buck converter PCB.
Made 2p54joiner a bit longer.
Fixed SOIC gullwing shape.
Added Wifi antennas.
Added Yunpen filtered IEC mains inlet.
Added power jack socket.
Added right angle option for LEDs.
Added gear_motors.
Added 686ZZ and 696ZZ ball bearings.
Added two larger box section tubes.
Added right angle option to square_buttons. Doesn't draw the frame yet.
Added multiwatt11 package for L6203.
Added ONS9143A 13A mains socket.
Added radial electrolytic capacitors.
Added LDE10_20B PSU module.
Added screw_tearsink() to make horizontal countersunk holes.
Can now have solid tracks on veroboard.
Added veroboard_base() module to make an STL for a base with spacers.
Corrected M6 spring washer thickness.
Can now specify the height of a solder meniscus.
slot() now has a center option.
Added button_6mm_7 with a taller button.
Added default fa, fs and fn constants used for drawing vitamins.
These can be set via $default_fa and $default_fs that can also be set
by environment variables: NOPSCADLIB_DEFAULT_FA and NOPSCADLIB_DEFAULT_FS.

libtest.scad

@@ -42,6 +42,7 @@
 include <lib.scad>
 
 use <tests/7_segments.scad>
+use <tests/antennas.scad>
 use <tests/ball_bearings.scad>
 use <tests/batteries.scad>
 use <tests/bearing_blocks.scad>
@@ -65,6 +66,7 @@ use <tests/extrusion_brackets.scad>
 use <tests/fans.scad>
 use <tests/fastons.scad>
 use <tests/fuseholder.scad>
+use <tests/gear_motors.scad>
 use <tests/geared_steppers.scad>
 use <tests/hot_ends.scad>
 use <tests/IECs.scad>
@@ -299,6 +301,9 @@ translate([x0, linear_bearings_y]) {
 translate([x0, steppers_y])
     stepper_motors();
 
+translate([x0 + 400, steppers_y])
+    gear_motors();
+
 translate([x0, sheets_y])
     sheets();
 
@@ -456,10 +461,10 @@ translate([x2, panel_meters_y])
 translate([x2, extrusions_y])
     extrusions();
 
-translate([400, transformers_y])
+translate([370, transformers_y])
     transformers();
 
-translate([x4 + 50, transformers_y])
+translate([x4, transformers_y])
     no_explode() socket_boxes();
 
 
@@ -497,6 +502,9 @@ translate([x4, rails_y + 130]) {
 translate([x4, cable_strip_y])
     cable_strips();
 
+translate([x4 + 150, cable_strip_y])
+    antennas();
+
 translate([x4, kp_pillow_blocks_y])
     kp_pillow_blocks();