start designing touch areas

Notizen.md

@@ -398,10 +398,49 @@
         vermutlich auch ganz sinnvoll, auch wenn es die Sensitivität senkt - was bei den Schrauben egal sein dürfte.
         - Die ELE Pins haben selbst schon bis zu 15 pF und sie treiben einen Strom, d.h. ein sinnvoller Widerstand dürft komplett nix ändern.
         - TS20 empfiehlt unter 50 pF und 200 bis 1000 Ohm.
+    - Wie designed ich die Touch-Flächen? Die müssen ja entlang eines Kreises.
+      - Grundsätzlich sollte es werden wie Figure 3 hier: https://www.nxp.com/docs/en/application-note/AN4600.pdf
+      - Da steht später übrigens auch C-Code drin für die Auswertung.
+      - Ich muss das "nur" entlang eines Kreises legen und meine Flächen werden vermutlich etwas platt gedrückt, weil ich radial weniger Platz habe pro Segment als
+        entlang des Kreises.
+      - Ich würde die Sektoren (nennen wir sie mal Spalten) etwas größer machen, weil zur Not reicht mir, wenn die funktionieren.
+      - Ich designe mal einen Sektor in FreeCAD und hoffe, dass ich den dann nach Kicad bekomme.
+      - Maße:
+        - 3 Ringe von 21 mm innen bis 33 mm außen
+          - Das war der Plan. Wie viel genau mit dem aktuellen Design (so dass man nur an wenigen Stellen die Polygone anpassen muss für Abstand zu anderen Dingen)?
+          - Abstand von den 33 mm zum Via neben den WS2812 ist aktuell 0.7 mm.
+          - Ein Ring mit 20.6 mm berührt den oberen MPR und unten links einen Widerstand (den ich aber schieben kann). Aber diverse Leitungen gehen bis fast zur 21 mm.
+          - Nun gut, ich belasse es mal bei den Werte und wenn das Polygone werden in Kicad, stelle ich die auf Clearance 1 mm.
+            - Oder auch nicht, weil dann wären sie ja auch 1 mm voneinander entfernt.
+        - 15 Sektoren, d.h. 24 Grad pro Sektor.
+        - Die App-Note empfiehlt grob 4x4 mm, aber wenn wir interpolieren wollen, muss es eine Raute über die komplette Breite sein.
+        - Bezogen auf den Sektor nach oben: Die Zeilen haben links und rechts ein halbes Feld (das dann mit dem Nachbarn kombiniert wird) und die Spalte startet unten
+          und oben mit einem halben Feld. Das ist dann wie das Layout in der App-Note.
+        - Abstand zwischen den Flächen ist 0.5 mm.
+        - Der Sektor ist oben 14 mm breit.
+      - (Hmpf, ich hab mir in Kicad angewöhnt, immer direkt Esc zu drücken, wenn es nicht tut, was es soll. Das ist in FreeCAD unpraktisch, weil schließt den Sketch.)
+      - Im ersten Sketch habe ich den Gap nach links/rechts, d.h. zum nächsten Sektor vergessen. Upps.
+      - Ich habe jetzt die Variante gemacht, wo die Zeilen sich mit der Spitze berühren. Aber eigentlich wollte ich ja die Spalten bevorzugen und da die anderen Leitungen
+        auf der Rückseite entlang des Kreise laufen, wäre es praktisch, wenn die Wires zum Verbinden der Segmente das auch tun.
+      - So, jetzt ist's anders herum. Ich vermute, eigentlich würde man es so machen, dass sich von beiden die Spitzen nicht berühren, sondern dass da eine Hilfslinie
+        läuft und alle Flächen sind gleich weit davon entfernt. Aber ich wollte ja die Spalten-Flächen bevorzugen.
+      - So, dann noch kleine Korrektur: Die Zeilen-Flächen aus zwei Hälften ist nicht gut, aber ich kann ja quasi die rechte Hälfte direkt links dran kleben.
+      - Wie nach Kicad?
+        - StepUp wäre evtl eine Option, aber keine Lust mich da jetzt reinzuarbeiten.
+        - https://forum.kicad.info/t/circle-segment-shaped-pad-error-custom-pad-shape-must-resolve-to-a-single-polygon/40847/2
+          - Korrigierter Code: `" ".join([("(xy " + " ".join([str(round(v, 3)) for v in line.StartPoint][0:2]) + ") ") for i, line in enumerate(ActiveSketch.Geometry) if not ActiveSketch.getConstruction(i)])`
+          - Aus jedem ein NPTH machen funktioniert ganz ok:
+            `(pad "" np_thru_hole circle (at 0 27) (size 0.2 0.2) (drill 0.762) (layers F&B.Cu *.Mask) (tstamp 8aea934d-50d1-459d-8ff6-21a24e0864e7))`
+          - Ein paar Punkte fehlten, aber man sieht in der Python-Console die Koordinate, wenn man einen selektiert.
+        - Das funktioniert, aber tut den Arc mit Linien approximieren. Gut genug.
+          - Wobei in der Datei steht sogar der `(arc)` als Teil des Pads noch drin, aber ich meine in der GUI wären es Punkte gewesen.
+        - Es könnte cool sein, die oberste und unterste Fläche wegzulassen bzw. nur die geraden Linien davon und den Rest per Polygon, damit es sich automatisch
+          anpasst. Durch die Linien wird es dann hoffentlich so, dass es die Clearance nicht zu den benachbarten Flächen einhält.
 
 
 
 TODO und weitere Gedanken:
+- Touch-Flächen designen (siehe oben)
 
 - Pinouts prüfen
 - Wannenstecker und Stiftleisten sizten falsch. Kicad hat den Ursprung auf Pin 1, JLC legt die Mitte auf den Ursprung.

c3pb-heizung-display/c3pb-heizung-display.kicad_pro

@@ -45,7 +45,7 @@
         "silk_text_upright": false,
         "zones": {
           "45_degree_only": false,
-          "min_clearance": 0.508
+          "min_clearance": 0.7
         }
       },
       "diff_pair_dimensions": [
@@ -495,6 +495,14 @@
     [
       "51109468-4bfb-41ad-8874-ba70f9386137",
       "WS2812, 10x5"
+    ],
+    [
+      "1ee83a91-219c-43d2-ada9-48af618f99d9",
+      "Touch Areas North"
+    ],
+    [
+      "0d8cc2e3-c82e-45ac-998a-4296d7e278b0",
+      "Touch Areas South"
     ]
   ],
   "text_variables": {}

c3pb-heizung-display/c3pb-heizung-display.kicad_sch

@@ -2384,6 +2384,18 @@
     (pin "1" (uuid 9ad0785f-e789-479b-974d-1c4c7c84b658))
   )
 
+  (sheet (at 240.03 81.28) (size 12.7 35.56) (fields_autoplaced)
+    (stroke (width 0.1524) (type solid) (color 0 0 0 0))
+    (fill (color 0 0 0 0.0000))
+    (uuid 0d8cc2e3-c82e-45ac-998a-4296d7e278b0)
+    (property "Sheet name" "Touch Areas South" (id 0) (at 240.03 80.5684 0)
+      (effects (font (size 1.27 1.27)) (justify left bottom))
+    )
+    (property "Sheet file" "touch_south.kicad_sch" (id 1) (at 240.03 117.4246 0)
+      (effects (font (size 1.27 1.27)) (justify left top))
+    )
+  )
+
   (sheet (at 130.81 144.78) (size 12.7 16.51) (fields_autoplaced)
     (stroke (width 0.1524) (type solid) (color 0 0 0 0))
     (fill (color 0 0 0 0.0000))
@@ -2404,6 +2416,18 @@
     )
   )
 
+  (sheet (at 240.03 26.67) (size 12.7 35.56) (fields_autoplaced)
+    (stroke (width 0.1524) (type solid) (color 0 0 0 0))
+    (fill (color 0 0 0 0.0000))
+    (uuid 1ee83a91-219c-43d2-ada9-48af618f99d9)
+    (property "Sheet name" "Touch Areas North" (id 0) (at 240.03 25.9584 0)
+      (effects (font (size 1.27 1.27)) (justify left bottom))
+    )
+    (property "Sheet file" "touch_north.kicad_sch" (id 1) (at 240.03 62.8146 0)
+      (effects (font (size 1.27 1.27)) (justify left top))
+    )
+  )
+
   (sheet (at 19.05 144.78) (size 12.7 16.51) (fields_autoplaced)
     (stroke (width 0.1524) (type solid) (color 0 0 0 0))
     (fill (color 0 0 0 0.0000))
@@ -2512,6 +2536,8 @@
     (path "/8457adb0-4d99-480c-89a0-a0f30b48b912" (page "5"))
     (path "/188423b3-ff5d-4b8e-9a42-d053fc097940" (page "6"))
     (path "/51109468-4bfb-41ad-8874-ba70f9386137" (page "7"))
+    (path "/1ee83a91-219c-43d2-ada9-48af618f99d9" (page "8"))
+    (path "/0d8cc2e3-c82e-45ac-998a-4296d7e278b0" (page "9"))
   )
 
   (symbol_instances
@@ -3757,6 +3783,15 @@
     (path "/1967054a-618e-4345-96ab-f1a306ee4bb3"
       (reference "SW4") (unit 1) (value "TS-1187A-B-A-B") (footprint "c3pb-heizung:SW_SPST_TS_1187A-B-A-B")
     )
+    (path "/1ee83a91-219c-43d2-ada9-48af618f99d9/31f41566-51f4-4d74-aeed-b6a57da2505f"
+      (reference "T1") (unit 1) (value "Touch Areas") (footprint "c3pb-heizung:Touch-Segment3")
+    )
+    (path "/1ee83a91-219c-43d2-ada9-48af618f99d9/07f99901-7ecc-41de-8e1c-93291720c929"
+      (reference "T2") (unit 1) (value "Touch Areas") (footprint "c3pb-heizung:Touch-Segment3")
+    )
+    (path "/1ee83a91-219c-43d2-ada9-48af618f99d9/7dfd936e-ccc9-4130-8e8e-30885f27afe6"
+      (reference "T5") (unit 1) (value "Touch Areas") (footprint "c3pb-heizung:Touch-Segment3")
+    )
     (path "/070a0333-f162-4177-8be6-2755e71344b0"
       (reference "U1") (unit 1) (value "OLED") (footprint "c3pb-heizung:OLED-0.96in")
     )

c3pb-heizung-display/touch_north.kicad_sch

+(kicad_sch (version 20211123) (generator eeschema)
+
+  (uuid a800db0a-179e-44ee-bae0-da52aa9b448e)
+
+  (paper "A4")
+
+  (lib_symbols
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+      (property "Reference" "J" (id 0) (at 0 5.08 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Value" "Conn_01x04" (id 1) (at 0 -7.62 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Footprint" "" (id 2) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "~" (id 3) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "connector" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Generic connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/)" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_fp_filters" "Connector*:*_1x??_*" (id 6) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "Conn_01x04_1_1"
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+        (pin passive line (at -5.08 -5.08 0) (length 3.81)
+          (name "Pin_4" (effects (font (size 1.27 1.27))))
+          (number "4" (effects (font (size 1.27 1.27))))
+        )
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+    (effects (font (size 1.27 1.27)) (justify right))
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+  (symbol (lib_id "Connector_Generic:Conn_01x04") (at 36.83 54.61 0) (unit 1)
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c3pb-heizung-display/touch_south.kicad_sch

+(kicad_sch (version 20211123) (generator eeschema)
+
+  (uuid a800db0a-179e-44ee-bae0-da52aa9b448e)
+
+  (paper "A4")
+
+  (lib_symbols
+  )
+
+)

c3pb-heizung/c3pb-heizung.pretty/Touch-Segment1.kicad_mod

+(footprint "Touch-Segment1" (version 20211014) (generator pcbnew)
+  (layer "F.Cu")
+  (tedit 0)
+  (attr smd)
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+    (tstamp 9d0e6738-c088-41a8-9e7b-d902567982bc)
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+      (xy -6.616 32.33)
+      (xy 0 31)
+    ) (layer "F.Cu") (width 0) (fill solid) (tstamp f7fc219d-6cef-4478-8e7e-10a62e32c1b9))
+)

c3pb-heizung/c3pb-heizung.pretty/Touch-Segment2.kicad_mod

+(footprint "Touch-Segment2" (version 20211014) (generator pcbnew)
+  (layer "F.Cu")
+  (tedit 0)
+  (attr smd)
+  (fp_text reference "REF**" (at 0 -0.5 unlocked) (layer "F.SilkS")
+    (effects (font (size 1 1) (thickness 0.15)))
+    (tstamp eb7c5f7f-17db-4d06-a046-dc0d43f2b9ac)
+  )
+  (fp_text value "Touch-Segment2" (at 0 1 unlocked) (layer "F.Fab")
+    (effects (font (size 1 1) (thickness 0.15)))
+    (tstamp 9d0e6738-c088-41a8-9e7b-d902567982bc)
+  )
+  (fp_text user "${REFERENCE}" (at 0 2.5 unlocked) (layer "F.Fab")
+    (effects (font (size 1 1) (thickness 0.15)))
+    (tstamp 374ee354-59bd-49cd-862d-02fe7c6645bd)
+  )
+  (pad "1" smd custom (at 0 22) (size 0.2 0.2) (layers "F.Cu")
+    (options (clearance outline) (anchor circle))
+    (primitives
+      (gr_poly (pts
+          (xy 0 1)
+          (xy -4.121 -1.408)
+          (xy -3 -1)
+          (xy 3 -1)
+          (xy 4.121 -1.408)
+        ) (width 0.01) (fill yes))
+          (gr_poly (pts
+          (xy 4.94 2.445)
+          (xy 0 5)
+          (xy -4.94 2.445)
+          (xy 0 1)
+        ) (width 0.01) (fill yes))
+          (gr_poly (pts
+          (xy 5.772 6.357)
+          (xy 0 9)
+          (xy -5.772 6.357)
+          (xy 0 5)
+        ) (width 0.01) (fill yes))
+          (gr_poly (pts
+          (xy 6.616 10.33)
+          (xy 6 10.33)
+          (xy 0 10)
+          (xy -6 10.33)
+          (xy -6.616 10.33)
+          (xy 0 9)
+        ) (width 0) (fill yes))
+    ) (tstamp 864c1255-3262-4b6e-9226-1f08578c99b0))
+  (pad "2" smd custom (at 5 22) (size 0.2 0.2) (layers "F.Cu")
+    (options (clearance outline) (anchor circle))
+    (primitives
+      (gr_poly (pts
+          (xy 3.146 -0.619)
+          (xy 0.095 1.969)
+          (xy -3.745 0.846)
+          (xy -0.542 -1.026)
+        ) (width 0.01) (fill yes))
+    ) (tstamp ace8101e-9e78-4966-97cb-55bf919e84c1))
+  (pad "3" smd custom (at 5 26) (size 0.2 0.2) (layers "F.Cu")
+    (options (clearance outline) (anchor circle))
+    (primitives
+      (gr_poly (pts
+          (xy 4.603 -0.914)
+          (xy 0.926 1.88)
+          (xy -3.569 0.823)
+          (xy 0.278 -1.167)
+        ) (width 0.01) (fill yes))
+    ) (tstamp d6329129-8697-47da-9faf-1aacbd7a5f76))
+  (pad "4" smd custom (at 5 30) (size 0.2 0.2) (layers "F.Cu")
+    (options (clearance outline) (anchor circle))
+    (primitives
+      (gr_poly (pts
+          (xy 6.063 -1.196)
+          (xy 1.77 1.851)
+          (xy -3.391 0.813)
+          (xy 1.11136 -1.2483)
+        ) (width 0) (fill yes))
+    ) (tstamp b661589e-1990-469d-9f47-c4ed677c3b64))
+)

c3pb-heizung/c3pb-heizung.pretty/Touch-Segment3.kicad_mod

+(footprint "Touch-Segment3" (version 20211014) (generator pcbnew)
+  (layer "F.Cu")
+  (tedit 0)
+  (attr smd)
+  (fp_text reference "REF**" (at 0 -0.5 unlocked) (layer "F.SilkS")
+    (effects (font (size 1 1) (thickness 0.15)))
+    (tstamp eb7c5f7f-17db-4d06-a046-dc0d43f2b9ac)
+  )
+  (fp_text value "Touch-Segment3" (at 0 1 unlocked) (layer "F.Fab")
+    (effects (font (size 1 1) (thickness 0.15)))
+    (tstamp 9d0e6738-c088-41a8-9e7b-d902567982bc)
+  )
+  (fp_text user "${REFERENCE}" (at 0 2.5 unlocked) (layer "F.Fab")
+    (effects (font (size 1 1) (thickness 0.15)))
+    (tstamp 374ee354-59bd-49cd-862d-02fe7c6645bd)
+  )
+  (fp_circle (center 0 0) (end 20.87 0) (layer "User.7") (width 0.01) (fill none) (tstamp ad865f19-ce43-435c-bdf6-26a649858bf9))
+  (pad "1" smd custom (at 0 24.5) (size 0.2 0.2) (layers "F.Cu")
+    (options (clearance outline) (anchor circle))
+    (primitives
+      (gr_poly (pts
+          (xy 4.94 -0.055)
+          (xy 0 2.5)
+          (xy -4.94 -0.055)
+          (xy 0 -1.5)
+        ) (width 0.01) (fill yes))
+          (gr_poly (pts
+          (xy 3.896139 -3.776608)
+          (xy 0 -1.5)
+          (xy -3.896139 -3.776608)
+          (xy -3.9 -3.99)
+          (xy -3.7 -3.95)
+          (xy 0 -1.76)
+          (xy 3.7 -3.95)
+          (xy 3.9 -3.99)
+        ) (width 0.01) (fill yes))
+          (gr_poly (pts
+          (xy 5.772 3.857)
+          (xy 0 6.5)
+          (xy -5.772 3.857)
+          (xy 0 2.5)
+        ) (width 0.01) (fill yes))
+          (gr_poly (pts
+          (xy 6.400661 7.786711)
+          (xy 6.4 8)
+          (xy 0 6.72)
+          (xy -6.4 8)
+          (xy -6.400661 7.786711)
+          (xy -6.329516 7.772409)
+          (xy 0 6.5)
+        ) (width 0) (fill yes))
+    ) (tstamp 864c1255-3262-4b6e-9226-1f08578c99b0))
+  (pad "2" smd custom (at 5 22) (size 0.2 0.2) (layers "F.Cu")
+    (options (clearance outline) (anchor circle))
+    (primitives
+      (gr_poly (pts
+          (xy 3.146 -0.619)
+          (xy 0.095 1.969)
+          (xy -3.745 0.846)
+          (xy -0.542 -1.026)
+        ) (width 0.01) (fill yes))
+    ) (tstamp ace8101e-9e78-4966-97cb-55bf919e84c1))
+  (pad "3" smd custom (at 5 26) (size 0.2 0.2) (layers "F.Cu")
+    (options (clearance outline) (anchor circle))
+    (primitives
+      (gr_poly (pts
+          (xy 4.603 -0.914)
+          (xy 0.926 1.88)
+          (xy -3.569 0.823)
+          (xy 0.278 -1.167)
+        ) (width 0.01) (fill yes))
+    ) (tstamp d6329129-8697-47da-9faf-1aacbd7a5f76))
+  (pad "4" smd custom (at 5 30) (size 0.2 0.2) (layers "F.Cu")
+    (options (clearance outline) (anchor circle))
+    (primitives
+      (gr_poly (pts
+          (xy 6.063 -1.196)
+          (xy 1.77 1.851)
+          (xy -3.391 0.813)
+          (xy 1.11136 -1.2483)
+        ) (width 0) (fill yes))
+    ) (tstamp b661589e-1990-469d-9f47-c4ed677c3b64))
+)