demo_design

README.md

 ## ENGINEERING JOURNAL
 ### Jingyan Ling
 
+### 08/29/2019
+
+- Fixing issues:
+  - better performance with multiple wires connecting to single pin
+  - changed a lot details in `drawing_processing` script:
+    - `pop` for endpoints at each wire will be executed before parallel traces
+    - `pop` and whether the point is connected to a pin is based a rule more restricted so even the wire does not connect to a pin without 0, 90 or 45 degree, it will still pop correctly
+- Complete design for demo that has paperbot with an IMU, a touch sensor connecting to LED and Resistor
+- ![](journal_media/demo_design.png)
+
+- Fixing `inkscape` unit and scale issue:
+  - Save as svg
+  - Select every entities in the drawing
+  - Lock the width and height scale
+  - Times (90/96) to either height or width
+
 ### 08/28/2019
 
 - Solving issue:

paperbot_ee_autoroute/dwg_w_layers.dxf

@@ -53,7 +53,7 @@ $HANDLING
   9
 $TDUPDATE
  40
-2458725.597546296
+2458725.645324074
   9
 $HANDSEED
   5

paperbot_ee_autoroute/ee_dwg_processing.py

@@ -148,7 +148,7 @@ class post_process():
         self.cross_cut_size=cross_size#mm
         self.trace_cut_width=0.25 #mm
         self.convert_unitfrom_ses()
-        self.draw_wires()
+
         
         ## flatten pin_at_array
         self.pin_at=[]
@@ -157,9 +157,7 @@ class post_process():
                 self.pin_at.append(pin)
         
         self.remove_redun_wire(0.4)
-        print(self.wiring)
         self.modify_wire_and_merge()
-        print(self.wiring)
         
         if not self.cross_cut_size==0:
             self.draw_cross_cut(self.cross_cut_size)
@@ -172,7 +170,7 @@ class post_process():
                 raise Exception ('Isolation box size is required as long as trace width is not equal to zero')
             else:    
                 self.draw_complete_traces()
-                self.draw_wires()
+
                 self.draw_rest_iso(self.iso_size,self.trace_cut_width)
 
         self.dwg.saveas('dwg_w_circuit.dxf')
@@ -227,12 +225,20 @@ class post_process():
             endpoints=[path[0],path[-1]]
             for j in range(len(endpoints)):
                 ept=endpoints[j]
-                if j==1:k=-1
-                else:k=0              
+                if j==1:
+                    k=-1
+                    kk=-2
+                else:
+                    k=0
+                    kk=1
+                further_ept=path[kk]              
                 for pin in self.pin_at:
-                    if distance_between_pts(ept,pin)<=(self.iso_size/2)*sqrt(2):
+                    if point_within_pinbox(ept,pin,self.iso_size):
                         self.wiring[i][k]=pin
+                        if point_within_pinbox(further_ept,pin,self.iso_size):
+                            self.wiring[i].pop(kk)
                         break
+               
         path_list=copy.deepcopy(self.wiring)
         self.wiring=[]
         while len(path_list)!=0:
@@ -370,51 +376,6 @@ class post_process():
             path_cp=copy.deepcopy(path)
             constrain_s,constrain_e=True,True
             
-            # pop and constrain
-            if [path_index,0] in self.path_at_pin:
-                connect_index=self.path_at_pin.index([path_index,0])
-                pin=self.connected_pins[connect_index]
-                if not distance_between_pts(path[0],pin)==0:
-                    constrain_s=False
-                    warnings.warn('Found wire endpoint not connected to pin exactly, check wire modify in post-process if error')
-                
-                pop_flag=True
-                lt=find_line_eq(path[0],path[1])
-                iso_l_pts=isolation_box_linepts(self.iso_size,pin)
-                for l_pts in iso_l_pts:
-                    pt1=l_pts[0]
-                    pt2=l_pts[1]
-                    l=find_line_eq(pt1,pt2)
-                    inter=find_intersect(l,lt)
-                    if type(inter)!=type(None) and if_pts_on_interval(inter,path[0],path[1]):
-                        pop_flag=False
-                        break
-                if pop_flag:
-                    path.pop(1)
-                    # constrain_s=False
-
-            if [path_index,-1] in self.path_at_pin:
-                connect_index=self.path_at_pin.index([path_index,-1])
-                pin=self.connected_pins[connect_index]
-                if not distance_between_pts(path[-1],pin)==0:
-                    constrain_e=False
-                    warnings.warn('Found wire endpoint not connected to pin exactly, check wire modify in post-process if error')
-                
-                if len(path)>2:
-                    pop_flag=True
-                    lt=find_line_eq(path[-1],path[-2])
-                    iso_l_pts=isolation_box_linepts(self.iso_size,pin)
-                    for l_pts in iso_l_pts:
-                        pt1=l_pts[0]
-                        pt2=l_pts[1]
-                        l=find_line_eq(pt1,pt2)
-                        inter=find_intersect(l,lt)
-                        if type(inter)!=type(None) and if_pts_on_interval(inter,path[-1],path[-2]):
-                            pop_flag=False
-                            break
-                    if pop_flag:
-                        path.pop(-2)
-
             if len(path)==1:
                 continue
             ######        
@@ -865,5 +826,19 @@ def three_ptw_on_one_line(pt1,pt2,pt3):
     if if_pts_on_line(l1,pt3):
         return True
 
+def point_within_pinbox(pt,pin,box_size):
+    """
+    pt=further point
+    pin= pin_location
+    """
+    x,y=pt[0],pt[1]
+    size=box_size/2
+    xmin=pin[0]-size
+    xmax=pin[0]+size
+    ymin=pin[1]-size
+    ymax=pin[1]+size
 
+    if x>xmin and x<xmax and y>ymin and y<ymax:
+        return True
+    else: return False
 

paperbot_ee_autoroute/paperbot_ee.rules

-
-(rules PCB paperbot_ee
-  (snap_angle 
-    fortyfive_degree
-  )
-  (autoroute_settings
-    (fanout off)
-    (autoroute on)
-    (postroute on)
-    (vias on)
-    (via_costs 50)
-    (plane_via_costs 5)
-    (start_ripup_costs 100)
-    (start_pass_no 60)
-    (layer_rule F.Cu
-      (active on)
-      (preferred_direction vertical)
-      (preferred_direction_trace_costs 1.0)
-      (against_preferred_direction_trace_costs 2.3)
-    )
-  )
-  (rule
-    (width 2000.0)
-    (clear 200.0)
-    (clear 125.0 (type smd_to_turn_gap))
-    (clear 1000.2 (type default_smd))
-    (clear 1000.0 (type smd_smd))
-  )
-  (via_rule
-    default
-  )
-  (class default
-    3v3 GND NET1 NET2 SCL SDA
-    (clearance_class default)
-    (via_rule default)
-    (rule
-      (width 2000.0)
-    )
-    (circuit 
-      (use_layer F.Cu)
-    )
-  )
-)
\ No newline at end of file

paperbot_ee_autoroute/paperbot_ee.ses

@@ -32,87 +32,76 @@
     (network_out 
       (net 3v3
         (wire
-          (path F.Cu 20000
-            1207429 826494
-            872710 826494
-            870000 823784
-          )
-        )
-        (wire
-          (path F.Cu 20000
-            1253824 971276
-            1253824 872889
-            1207429 826494
-          )
-        )
-        (wire
-          (path F.Cu 20000
-            1205100 565218
-            1205101 565218
-            1207429 567546
-            1207429 826494
+          (path F.Cu 15238
+            1095538 750926
+            1205100 641363
+            1205100 575300
           )
         )
         (wire
           (path F.Cu 15238
-            870000 823784
             870000 798400
+            870000 808782
+            885189 823971
+            1022492 823971
+            1095538 750926
           )
         )
         (wire
-          (path F.Cu 15238
-            1205100 565218
-            1205100 575300
+          (path F.Cu 20000
+            1251600 945976
+            1251600 906988
+            1095538 750926
           )
         )
         (wire
           (path F.Cu 15238
-            1253824 971276
             1251600 973500
+            1251600 945976
           )
         )
       )
       (net GND
         (wire
           (path F.Cu 20000
-            1226200 956878
-            1191566 922244
-            936727 922244
-            837766 823283
             837766 805234
+            804441 805234
+            670000 670793
+            670000 435400
           )
         )
         (wire
           (path F.Cu 20000
-            670000 435400
-            670000 662768
-            812466 805234
             837766 805234
-          )
-        )
-        (wire
-          (path F.Cu 15238
-            1226200 956878
-            1226200 973500
+            837766 809363
+            966519 938116
+            1212735 938116
+            1226200 951581
           )
         )
         (wire
           (path F.Cu 20000
-            1001900 558678
-            799944 356722
-            670883 356722
-            642357 385248
-            642357 409364
-            668393 435400
             670000 435400
+            668570 435400
+            642254 409084
+            642254 385621
+            671591 356284
+            808268 356284
+            1001900 549916
           )
         )
         (wire
           (path F.Cu 15238
-            1001900 558678
+            1001900 549916
             1001900 575300
           )
         )
+        (wire
+          (path F.Cu 15238
+            1226200 951581
+            1226200 973500
+          )
+        )
         (wire
           (path F.Cu 15238
             837766 805234
@@ -123,12 +112,12 @@
       (net NET1
         (wire
           (path F.Cu 20000
-            720000 422700
-            720000 681209
-            801893 763102
-            873853 763102
-            897624 786873
             897624 796176
+            897624 786640
+            881379 770395
+            805231 770395
+            720000 685164
+            720000 422700
           )
         )
         (wire
@@ -149,55 +138,60 @@
       )
       (net SCL
         (wire
-          (path F.Cu 15238
-            1052700 549916
-            1052700 575300
+          (path F.Cu 20000
+            1205645 993546
+            1200800 988701
           )
         )
         (wire
           (path F.Cu 20000
-            1200800 990122
-            1212083 1001405
-            1263132 1001405
-            1279548 984989
-            1279548 607923
-            1214718 543093
-            1059523 543093
-            1052700 549916
+            1052700 561509
+            1066737 547472
+            1216392 547472
+            1279223 610303
+            1279223 984942
+            1263042 1001123
+            1213222 1001123
+            1205645 993546
           )
         )
         (wire
           (path F.Cu 15238
-            1200800 990122
             1200800 973500
+            1200800 988701
+          )
+        )
+        (wire
+          (path F.Cu 15238
+            1052700 575300
+            1052700 561509
           )
         )
       )
       (net SDA
         (wire
           (path F.Cu 20000
-            1027300 559154
-            1027300 543297
-            1049610 520987
-            1224236 520987
-            1302018 598769
-            1302018 994154
-            1272397 1023775
-            1203172 1023775
-            1175400 996003
-            1175400 987696
+            1027300 549916
+            1055324 521892
+            1226301 521892
+            1304527 600118
+            1304527 994994
+            1272595 1026926
+            1203255 1026926
+            1175400 999071
+            1175400 988622
           )
         )
         (wire
           (path F.Cu 15238
-            1175400 973500
-            1175400 987696
+            1027300 549916
+            1027300 575300
           )
         )
         (wire
           (path F.Cu 15238
-            1027300 575300
-            1027300 559154
+            1175400 988622
+            1175400 973500
           )
         )
       )

paperbot_ee_autoroute/roco_dsn.py

@@ -34,7 +34,7 @@ class brd_design():
  
         # ]
         self.netclass_list=[
-            ['default',['3v3','GND','NET1','NET2','SCL','SDA'],'',2000,200]
+            ['default',['3v3','GND','NET1','NET2','SCL','SDA'],'',2000,500]
         ]
         # self.module_list,self.netlist,self.netclass_list=self.read_from_csv(netlist_csv)
         

paperbot_ee_autoroute/roco_electrical.py

@@ -31,14 +31,14 @@ def roco_add_ee(me_drawing,netlist_csv,module_libpath,dsnwritier_dir,
 
     ready_for_autorouter=pre_process(me_drawing) #get dwg_for_autorouter.dxf
     ee_design=brd_design(ready_for_autorouter.bry_ind,module_libpath,netlist_csv)#,dwgfile='dwg_for_autorouter_temp.dxf') #get paperbot_ee.dsn 
-    # subprocess.call(['java','-jar','freeRouting.jar','-de',ee_design.savename+'.dsn','-white','-s'])
+    subprocess.call(['java','-jar','freeRouting.jar','-de',ee_design.savename+'.dsn','-white','-s'])
     wiring_path=find_wire(ee_design.savename,ee_design.pins_at) #read ses file
     post_process(me_drawing,wiring_path,ee_design.pins_at,trace_width,iso_size,cross_size) # draw for fabrication 
 
-    # os.remove(ready_for_autorouter.savename)
-    # os.remove(ee_design.savename+'.dsn')
+    os.remove(ready_for_autorouter.savename)
+    os.remove(ee_design.savename+'.dsn')
     # os.remove(ee_design.savename+'.ses')
-    # os.remove(ee_design.savename+'.rules')
+    os.remove(ee_design.savename+'.rules')
 
 def test():
     from read_old_paperbot import read_old_paperbot