update

code/SilentFan/.gitignore

@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

code/SilentFan/.vscode/extensions.json

@@ -0,0 +1,10 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

code/SilentFan/include/README

@@ -0,0 +1,39 @@
+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

code/SilentFan/lib/README

@@ -0,0 +1,46 @@
+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

code/SilentFan/platformio.ini

@@ -0,0 +1,21 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:digispark-tiny]
+platform = atmelavr
+board = digispark-tiny
+framework = arduino
+; change microcontroller
+board_build.mcu = attiny85
+; change MCU frequency
+board_build.f_cpu = 16500000L
+
+
+lib_deps =

code/SilentFan/src/main.cpp

@@ -0,0 +1,17 @@
+#include <Arduino.h>
+
+
+void setup() {
+   TCCR0A = 0b0 | ((1 << COM0A1)|(0 << COM0A0)|(1 << COM0B1)|(0 << COM0B0)| (0 << WGM01) | (1 << WGM00));
+  TCCR0B = 0b0 | ((0 << FOC0A)|(0 << FOC0B)|(1 << WGM02)|(0 << CS02)|(0 << CS01)|(1 << CS00));
+  OCR0A = 160;
+  pinMode(PINB0, OUTPUT);
+  pinMode(PINB1, OUTPUT);
+}
+
+void loop() {
+  analogWrite(PINB0, 50);
+  analogWrite(PINB1, 50);
+  delay(1000);
+}
+

code/SilentFan/test/README

@@ -0,0 +1,11 @@
+
+This directory is intended for PlatformIO Test Runner and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PlatformIO Unit Testing:
+- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html

hardware/SilentFan/SilentFan.kicad_prl

@@ -0,0 +1,75 @@
+{
+  "board": {
+    "active_layer": 0,
+    "active_layer_preset": "All Layers",
+    "auto_track_width": true,
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "pads": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.6
+    },
+    "ratsnest_display_mode": 0,
+    "selection_filter": {
+      "dimensions": true,
+      "footprints": true,
+      "graphics": true,
+      "keepouts": true,
+      "lockedItems": true,
+      "otherItems": true,
+      "pads": true,
+      "text": true,
+      "tracks": true,
+      "vias": true,
+      "zones": true
+    },
+    "visible_items": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      8,
+      9,
+      10,
+      11,
+      12,
+      13,
+      14,
+      15,
+      16,
+      17,
+      18,
+      19,
+      20,
+      21,
+      22,
+      23,
+      24,
+      25,
+      26,
+      27,
+      28,
+      29,
+      30,
+      32,
+      33,
+      34,
+      35,
+      36
+    ],
+    "visible_layers": "fffffff_ffffffff",
+    "zone_display_mode": 0
+  },
+  "meta": {
+    "filename": "SilentFan.kicad_prl",
+    "version": 3
+  },
+  "project": {
+    "files": []
+  }
+}

hardware/SilentFan/SilentFan.kicad_pro

@@ -2,60 +2,419 @@
   "board": {
     "design_settings": {
       "defaults": {
-        "board_outline_line_width": 0.1,
-        "copper_line_width": 0.2,
+        "board_outline_line_width": 0.09999999999999999,
+        "copper_line_width": 0.19999999999999998,
+        "copper_text_italic": false,
         "copper_text_size_h": 1.5,
         "copper_text_size_v": 1.5,
         "copper_text_thickness": 0.3,
+        "copper_text_upright": false,
+        "courtyard_line_width": 0.049999999999999996,
+        "dimension_precision": 4,
+        "dimension_units": 3,
+        "dimensions": {
+          "arrow_length": 1270000,
+          "extension_offset": 500000,
+          "keep_text_aligned": true,
+          "suppress_zeroes": false,
+          "text_position": 0,
+          "units_format": 1
+        },
+        "fab_line_width": 0.09999999999999999,
+        "fab_text_italic": false,
+        "fab_text_size_h": 1.0,
+        "fab_text_size_v": 1.0,
+        "fab_text_thickness": 0.15,
+        "fab_text_upright": false,
         "other_line_width": 0.15,
+        "other_text_italic": false,
+        "other_text_size_h": 1.0,
+        "other_text_size_v": 1.0,
+        "other_text_thickness": 0.15,
+        "other_text_upright": false,
+        "pads": {
+          "drill": 0.762,
+          "height": 1.524,
+          "width": 1.524
+        },
         "silk_line_width": 0.15,
+        "silk_text_italic": false,
         "silk_text_size_h": 1.0,
         "silk_text_size_v": 1.0,
-        "silk_text_thickness": 0.15
+        "silk_text_thickness": 0.15,
+        "silk_text_upright": false,
+        "zones": {
+          "45_degree_only": false,
+          "min_clearance": 0.508
+        }
       },
       "diff_pair_dimensions": [],
       "drc_exclusions": [],
+      "meta": {
+        "version": 2
+      },
+      "rule_severities": {
+        "annular_width": "error",
+        "clearance": "error",
+        "copper_edge_clearance": "error",
+        "courtyards_overlap": "error",
+        "diff_pair_gap_out_of_range": "error",
+        "diff_pair_uncoupled_length_too_long": "error",
+        "drill_out_of_range": "error",
+        "duplicate_footprints": "warning",
+        "extra_footprint": "warning",
+        "footprint_type_mismatch": "error",
+        "hole_clearance": "error",
+        "hole_near_hole": "error",
+        "invalid_outline": "error",
+        "item_on_disabled_layer": "error",
+        "items_not_allowed": "error",
+        "length_out_of_range": "error",
+        "malformed_courtyard": "error",
+        "microvia_drill_out_of_range": "error",
+        "missing_courtyard": "ignore",
+        "missing_footprint": "warning",
+        "net_conflict": "warning",
+        "npth_inside_courtyard": "ignore",
+        "padstack": "error",
+        "pth_inside_courtyard": "ignore",
+        "shorting_items": "error",
+        "silk_over_copper": "warning",
+        "silk_overlap": "warning",
+        "skew_out_of_range": "error",
+        "through_hole_pad_without_hole": "error",
+        "too_many_vias": "error",
+        "track_dangling": "warning",
+        "track_width": "error",
+        "tracks_crossing": "error",
+        "unconnected_items": "error",
+        "unresolved_variable": "error",
+        "via_dangling": "warning",
+        "zone_has_empty_net": "error",
+        "zones_intersect": "error"
+      },
       "rules": {
+        "allow_blind_buried_vias": false,
+        "allow_microvias": false,
+        "max_error": 0.005,
+        "min_clearance": 0.0,
         "min_copper_edge_clearance": 0.0,
+        "min_hole_clearance": 0.25,
+        "min_hole_to_hole": 0.25,
+        "min_microvia_diameter": 0.19999999999999998,
+        "min_microvia_drill": 0.09999999999999999,
+        "min_silk_clearance": 0.0,
+        "min_through_hole_diameter": 0.3,
+        "min_track_width": 0.19999999999999998,
+        "min_via_annular_width": 0.049999999999999996,
+        "min_via_diameter": 0.39999999999999997,
         "solder_mask_clearance": 0.0,
-        "solder_mask_min_width": 0.0
+        "solder_mask_min_width": 0.0,
+        "use_height_for_length_calcs": true
       },
       "track_widths": [],
-      "via_dimensions": []
-    }
+      "via_dimensions": [],
+      "zones_allow_external_fillets": false,
+      "zones_use_no_outline": true
+    },
+    "layer_presets": []
   },
   "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "erc": {
+    "erc_exclusions": [],
+    "meta": {
+      "version": 0
+    },
+    "pin_map": [
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        1,
+        0,
+        1,
+        2
+      ],
+      [
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        2,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        1,
+        1,
+        1,
+        1,
+        1,
+        0,
+        1,
+        1,
+        1,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        2,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2
+      ]
+    ],
+    "rule_severities": {
+      "bus_definition_conflict": "error",
+      "bus_entry_needed": "error",
+      "bus_label_syntax": "error",
+      "bus_to_bus_conflict": "error",
+      "bus_to_net_conflict": "error",
+      "different_unit_footprint": "error",
+      "different_unit_net": "error",
+      "duplicate_reference": "error",
+      "duplicate_sheet_names": "error",
+      "extra_units": "error",
+      "global_label_dangling": "warning",
+      "hier_label_mismatch": "error",
+      "label_dangling": "error",
+      "lib_symbol_issues": "warning",
+      "multiple_net_names": "warning",
+      "net_not_bus_member": "warning",
+      "no_connect_connected": "warning",
+      "no_connect_dangling": "warning",
+      "pin_not_connected": "error",
+      "pin_not_driven": "error",
+      "pin_to_pin": "warning",
+      "power_pin_not_driven": "error",
+      "similar_labels": "warning",
+      "unannotated": "error",
+      "unit_value_mismatch": "error",
+      "unresolved_variable": "error",
+      "wire_dangling": "error"
+    }
+  },
   "libraries": {
     "pinned_footprint_libs": [],
     "pinned_symbol_libs": []
   },
   "meta": {
-    "filename": "kicad.kicad_pro",
+    "filename": "SilentFan.kicad_pro",
     "version": 1
   },
   "net_settings": {
     "classes": [
       {
+        "bus_width": 12.0,
         "clearance": 0.2,
         "diff_pair_gap": 0.25,
         "diff_pair_via_gap": 0.25,
         "diff_pair_width": 0.2,
+        "line_style": 0,
         "microvia_diameter": 0.3,
         "microvia_drill": 0.1,
         "name": "Default",
-        "nets": [],
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
         "track_width": 0.25,
         "via_diameter": 0.8,
-        "via_drill": 0.4
+        "via_drill": 0.4,
+        "wire_width": 6.0
       }
     ],
     "meta": {
-      "version": 0
-    }
+      "version": 2
+    },
+    "net_colors": null
   },
   "pcbnew": {
+    "last_paths": {
+      "gencad": "",
+      "idf": "",
+      "netlist": "",
+      "specctra_dsn": "",
+      "step": "",
+      "vrml": ""
+    },
     "page_layout_descr_file": ""
   },
-  "sheets": [],
+  "schematic": {
+    "annotate_start_num": 0,
+    "drawing": {
+      "default_line_thickness": 6.0,
+      "default_text_size": 50.0,
+      "field_names": [],
+      "intersheets_ref_own_page": false,
+      "intersheets_ref_prefix": "",
+      "intersheets_ref_short": false,
+      "intersheets_ref_show": false,
+      "intersheets_ref_suffix": "",
+      "junction_size_choice": 3,
+      "label_size_ratio": 0.375,
+      "pin_symbol_size": 25.0,
+      "text_offset_ratio": 0.15
+    },
+    "legacy_lib_dir": "",
+    "legacy_lib_list": [],
+    "meta": {
+      "version": 1
+    },
+    "net_format_name": "",
+    "ngspice": {
+      "fix_include_paths": true,
+      "fix_passive_vals": false,
+      "meta": {
+        "version": 0
+      },
+      "model_mode": 0,
+      "workbook_filename": ""
+    },
+    "page_layout_descr_file": "",
+    "plot_directory": "",
+    "spice_adjust_passive_values": false,
+    "spice_external_command": "spice \"%I\"",
+    "subpart_first_id": 65,
+    "subpart_id_separator": 0
+  },
+  "sheets": [
+    [
+      "30dad4c2-691d-4cc4-8b38-21f34cb747b3",
+      ""
+    ]
+  ],
   "text_variables": {}
 }

hardware/SilentFan/SilentFan.kicad_sch

@@ -1,5 +1,694 @@
 (kicad_sch (version 20211123) (generator eeschema)
+
+  (uuid 30dad4c2-691d-4cc4-8b38-21f34cb747b3)
+
   (paper "A4")
-  (lib_symbols)
-  (symbol_instances)
+
+  (title_block
+    (title "SilentFan")
+    (date "2023-05-11")
+    (rev "1")
+    (company "Snarf Skunkworks")
+    (comment 1 "https://makingcircuits.com/blog/simple-12v-dc-fan-speed-controller-using-ic-555/")
+    (comment 2 "Based on R.Girish schematic ")
+    (comment 3 "Silent Fan with pwm controler")
+  )
+
+  (lib_symbols
+    (symbol "Connector:Conn_01x03_Male" (pin_names (offset 1.016) hide) (in_bom yes) (on_board yes)
+      (property "Reference" "J" (id 0) (at 0 5.08 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Value" "Conn_01x03_Male" (id 1) (at 0 -5.08 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, 01x03, 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_01x03_Male_1_1"
+        (polyline
+          (pts
+            (xy 1.27 -2.54)
+            (xy 0.8636 -2.54)
+          )
+          (stroke (width 0.1524) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.27 0)
+            (xy 0.8636 0)
+          )
+          (stroke (width 0.1524) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.27 2.54)
+            (xy 0.8636 2.54)
+          )
+          (stroke (width 0.1524) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (rectangle (start 0.8636 -2.413) (end 0 -2.667)
+          (stroke (width 0.1524) (type default) (color 0 0 0 0))
+          (fill (type outline))
+        )
+        (rectangle (start 0.8636 0.127) (end 0 -0.127)
+          (stroke (width 0.1524) (type default) (color 0 0 0 0))
+          (fill (type outline))
+        )
+        (rectangle (start 0.8636 2.667) (end 0 2.413)
+          (stroke (width 0.1524) (type default) (color 0 0 0 0))
+          (fill (type outline))
+        )
+        (pin passive line (at 5.08 2.54 180) (length 3.81)
+          (name "Pin_1" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+        (pin passive line (at 5.08 0 180) (length 3.81)
+          (name "Pin_2" (effects (font (size 1.27 1.27))))
+          (number "2" (effects (font (size 1.27 1.27))))
+        )
+        (pin passive line (at 5.08 -2.54 180) (length 3.81)
+          (name "Pin_3" (effects (font (size 1.27 1.27))))
+          (number "3" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
+    (symbol "Connector:Conn_01x04_Male" (pin_names (offset 1.016) hide) (in_bom yes) (on_board yes)
+      (property "Reference" "J" (id 0) (at 0 5.08 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Value" "Conn_01x04_Male" (id 1) (at 0 -7.62 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Footprint" "" (id 2) (at 0 0 0)
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+      (effects (font (size 1.27 1.27)) hide)
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+
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+    (in_bom yes) (on_board yes) (fields_autoplaced)
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+    (property "Value" "1N4001" (id 1) (at 198.12 53.34 0))
+    (property "Footprint" "Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal" (id 2) (at 198.12 57.15 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "http://www.vishay.com/docs/88503/1n4001.pdf" (id 3) (at 198.12 57.15 0)
+      (effects (font (size 1.27 1.27)) hide)
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+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (id 2) (at 176.022 101.6 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
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+    (property "Footprint" "Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal" (id 2) (at 186.69 57.15 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "http://www.vishay.com/docs/88503/1n4001.pdf" (id 3) (at 186.69 57.15 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
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+    (path "/" (page "1"))
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+    )
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+    )
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+    )
+    (path "/2c601e7c-de4e-4449-8052-55d04627d042"
+      (reference "J?") (unit 1) (value "Conn_01x04_Male") (footprint "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical")
+    )
+    (path "/5f066cb2-d05b-4e7f-9ab8-2ad0d15c84d4"
+      (reference "J?") (unit 1) (value "Conn_01x03_Male") (footprint "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical")
+    )
+    (path "/02b8a912-2f7c-41e2-9076-c99fe4f47d14"
+      (reference "Q?") (unit 1) (value "IRF540N") (footprint "Package_TO_SOT_THT:TO-220-3_Vertical")
+    )
+    (path "/673bc057-252d-48d2-b45c-1332c27379fe"
+      (reference "R?") (unit 1) (value "R") (footprint "Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal")
+    )
+    (path "/c07dbb59-b45d-41fa-ad3b-e3af244c162d"
+      (reference "R?") (unit 1) (value "R") (footprint "Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal")
+    )
+    (path "/b1d77812-9589-4045-bea8-cf8670ad843a"
+      (reference "U?") (unit 1) (value "NE555P") (footprint "Package_DIP:DIP-8_W7.62mm")
+    )
+  )
 )

hardware/SilentFan/fp-info-cache

@@ -0,0 +1 @@
+0