more research

10 files changed, 84 insertions, 1467 deletions

diff --git a/docs/onderzoeksrapport.pdf b/docs/onderzoeksrapport.pdf
index 119c441..3cf8e2b 100644
--- a/docs/onderzoeksrapport.pdf
+++ b/docs/onderzoeksrapport.pdf
diff --git a/docs/onderzoeksrapport.tex b/docs/onderzoeksrapport.tex
index 3fba575..7d5b5ca 100644
--- a/docs/onderzoeksrapport.tex
+++ b/docs/onderzoeksrapport.tex
@@ -39,6 +39,11 @@ Project Stylofoon \hfill \today
 
 \tableofcontents
 
+\section{Veelgebruikte eenheden}
+
+\textit{Welke eenheden worden er gebruikt om stromen en spanningen in audio-circuits
+te meten?}
+
 \section{555 Timer configuratie}
 
 \textit{Hoe configureer je een 555 timer op een manier waarop de spanning of
@@ -96,14 +101,53 @@ Het hele systeem draait op een voedingsspanning van V\sub{CC} $=$ \SI{5.0}{\volt
 Het zou ideaal zijn als de hele stylofoon door \'e\'en USB poort gevoed kan worden.
 Een standaard USB aansluiting levert echter niet meer dan \SI{500}{\milli\ampere},
 dus als alle onderdelen gecombineerd meer dan deze limiet gebruiken moet er een
-andere oplossing voor de voeding gekozen worden. Hier is een overzicht van stromen
-die verbruikt worden door de verschillende onderdelen in de stylofoon:
+andere oplossing voor de voeding gekozen worden.
+
+\subsection{Metingen}
+
+\begin{figure}[H]
+\centering
+\begin{tabular}{lccl}
+\toprule
+Onderdeel \\
+\midrule
+Arduino (audio uit)                   & V\sub{PP} & \num{0} & \si{\volt}\\
+										                  & I\sub{PP} & \num{0} & \si{\milli\ampere}\\
+555 (audio uit)                       & V\sub{PP} & \num{0} & \si{\volt}\\
+                                      & I\sub{PP} & \num{0} & \si{\milli\ampere}\\
+Functiegenerator (fatsoenlijk volume) & V\sub{PP} & \num{0} & \si{\volt}\\
+																			& I\sub{PP} & \num{0} & \si{\milli\ampere}\\
+\bottomrule
+\end{tabular}
+\caption{Gemeten stromen en spanningen}
+\end{figure}
+
+\subsection{Uitvoer}
+
+De uitvoer van de stylofoon moet volgens de opdrachtgever `een fatsoenlijk volume'
+produceren. Op internet heb ik gevonden dat een gemiddelde koptelefoonaansluiting op
+een smartphone ongeveer \SI{30}{\milli\watt} bij een koptelefoon met een impedantie
+van \SI{32}{\ohm} levert. Het volume van een audiosignaal is lastig te achterhalen
+omdat het van veel verschillende factoren af hangt zoals de spanning, vermogen,
+impedantie, en de gevoeligheid van een uitvoerapparaat.
+
+Genoeg vermogen leveren voor oordopjes zal niet heel lastig zijn, maar omdat de
+gevoeligheid van speakers heel erg vari\"eert is het lastig om een exacte waarde te
+geven. Daarom ga ik er vanaf nu vanuit dat \SI{30}{\milli\watt} @ \SI{32}{\ohm}
+genoeg zal zijn. Hiermee kan de stroom die de stylofoon moet leveren uitgerekend
+worden als volgt:
+
+\[
+I=\sqrt{\frac{P}{R}} = \sqrt{\frac{30*10^{-3}}{32}} \approx \SI{31}{\milli\ampere}
+\]
+
+\subsection{Overzicht}
 
 \begin{figure}[H]
 \centering
 \begin{tabular}{lr}
 \toprule
-Onderdeel & I\sub{in} (max) [\si{\milli\ampere}]\\
+Onderdeel & I\sub{max} [\si{\milli\ampere}]\\
 \midrule
 Arduino & \num{50} \\
 Arduino audio uit & \num{20} \\
@@ -112,7 +156,7 @@ VU-display & \num{0} \\
 Versterker digitale synth & \num{0} \\
 Versterker analoge synth & \num{0} \\
 Stroomverlies weerstandladder & \num{0} \\
-Audio-uitvoer & \num{0} \\
+Audio-uitvoer & \num{31} \\
 \midrule
 \hfill Totaal: & \num{500} \\
 \bottomrule
@@ -124,6 +168,8 @@ Audio-uitvoer & \num{0} \\
 
 \textit{Hoe versterk je een audiosignaal zonder ruis of vervorming te introduceren?}
 
+(misschien een lm386 gebruiken als versterker als die er is in het techlab)
+
 \section{VU-display}
 
 \textit{Hoe moet je een LM3914 toepassen om een VU-display aan te sturen?}
diff --git a/hardware/hardware.kicad_sch b/hardware/hardware.kicad_sch
index 26b7a65..61cfdc7 100644
--- a/hardware/hardware.kicad_sch
+++ b/hardware/hardware.kicad_sch
@@ -570,7 +570,7 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 9fcefa51-bdc7-4659-a05d-e58513b2152d)
   )
-  (wire (pts (xy 160.02 81.28) (xy 162.56 81.28))
+  (wire (pts (xy 168.275 67.945) (xy 170.815 67.945))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid aa531aa9-a77a-49b0-b1dc-f96d3eec3bc5)
   )
@@ -607,6 +607,19 @@
     (uuid ff86d4a9-3ed1-49ff-b332-47f615b32b3a)
   )
 
+  (text "Keyboard simulator" (at 168.91 74.295 0)
+    (effects (font (size 1.27 1.27)) (justify left bottom))
+    (uuid 93afe5b9-ac56-4aea-8798-699080b634cf)
+  )
+  (text "555 VCO\n" (at 74.93 86.995 0)
+    (effects (font (size 1.27 1.27)) (justify left bottom))
+    (uuid a57a044f-1e0a-4f57-b98f-7a871f824575)
+  )
+  (text "Arduino Inputs" (at 85.09 26.035 0)
+    (effects (font (size 1.27 1.27)) (justify left bottom))
+    (uuid e681df62-d41e-4f17-b2e9-7b3665eb7d10)
+  )
+
   (global_label "POT_REL" (shape input) (at 55.88 54.61 0) (fields_autoplaced)
     (effects (font (size 1.27 1.27)) (justify left))
     (uuid 1dce7b9d-4f2a-4eaf-92bf-fbc13310290c)
@@ -614,10 +627,10 @@
       (effects (font (size 1.27 1.27)) (justify left) hide)
     )
   )
-  (global_label "V_IN" (shape input) (at 87.63 71.12 180) (fields_autoplaced)
+  (global_label "KB_IN" (shape input) (at 87.63 71.12 180) (fields_autoplaced)
     (effects (font (size 1.27 1.27)) (justify right))
     (uuid 32bd6656-1052-42ab-8a0a-6d97cd8ec8d4)
-    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 81.2255 71.0406 0)
+    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 79.774 71.0406 0)
       (effects (font (size 1.27 1.27)) (justify right) hide)
     )
   )
@@ -635,10 +648,10 @@
       (effects (font (size 1.27 1.27)) (justify right) hide)
     )
   )
-  (global_label "V_IN" (shape output) (at 162.56 81.28 0) (fields_autoplaced)
+  (global_label "KB_IN" (shape output) (at 170.815 67.945 0) (fields_autoplaced)
     (effects (font (size 1.27 1.27)) (justify left))
     (uuid 52bb253e-2fc8-4be9-a67a-eb039f698bc3)
-    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 168.9645 81.2006 0)
+    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 178.671 67.8656 0)
       (effects (font (size 1.27 1.27)) (justify left) hide)
     )
   )
@@ -685,19 +698,19 @@
     )
   )
 
-  (symbol (lib_id "Device:R_Potentiometer") (at 156.21 81.28 0) (unit 1)
+  (symbol (lib_id "Device:R_Potentiometer") (at 164.465 67.945 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 030ef28a-29d4-4f58-92e8-740bf14ab01d)
-    (property "Reference" "RV4" (id 0) (at 153.67 80.0099 0)
+    (property "Reference" "RV4" (id 0) (at 161.925 66.6749 0)
       (effects (font (size 1.27 1.27)) (justify right))
     )
-    (property "Value" ">10k" (id 1) (at 153.67 82.5499 0)
+    (property "Value" ">10k" (id 1) (at 161.925 69.2149 0)
       (effects (font (size 1.27 1.27)) (justify right))
     )
-    (property "Footprint" "" (id 2) (at 156.21 81.28 0)
+    (property "Footprint" "" (id 2) (at 164.465 67.945 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 156.21 81.28 0)
+    (property "Datasheet" "~" (id 3) (at 164.465 67.945 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid bca4b51f-7877-4161-8997-7e44cb244d10))
@@ -1007,17 +1020,17 @@
     (pin "1" (uuid 2acfbcc6-50ec-46ac-b807-ebccf0e1e964))
   )
 
-  (symbol (lib_id "power:VCC") (at 156.21 77.47 0) (unit 1)
+  (symbol (lib_id "power:VCC") (at 164.465 64.135 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid bb12025c-5159-48fa-8bae-9e384d5661d4)
-    (property "Reference" "#PWR?" (id 0) (at 156.21 81.28 0)
+    (property "Reference" "#PWR?" (id 0) (at 164.465 67.945 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Value" "VCC" (id 1) (at 156.21 71.755 0))
-    (property "Footprint" "" (id 2) (at 156.21 77.47 0)
+    (property "Value" "VCC" (id 1) (at 164.465 58.42 0))
+    (property "Footprint" "" (id 2) (at 164.465 64.135 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "" (id 3) (at 156.21 77.47 0)
+    (property "Datasheet" "" (id 3) (at 164.465 64.135 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid cf5fc289-f648-4b87-b433-3a697e042445))
@@ -1151,17 +1164,17 @@
     (pin "2" (uuid 963547e7-ad6a-4819-b4bf-65e5dca35964))
   )
 
-  (symbol (lib_id "power:GND") (at 156.21 85.09 0) (unit 1)
+  (symbol (lib_id "power:GND") (at 164.465 71.755 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid fb9ac281-071b-46bd-b8e9-da54888ef022)
-    (property "Reference" "#PWR?" (id 0) (at 156.21 91.44 0)
+    (property "Reference" "#PWR?" (id 0) (at 164.465 78.105 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Value" "GND" (id 1) (at 156.21 90.17 0))
-    (property "Footprint" "" (id 2) (at 156.21 85.09 0)
+    (property "Value" "GND" (id 1) (at 164.465 76.835 0))
+    (property "Footprint" "" (id 2) (at 164.465 71.755 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "" (id 3) (at 156.21 85.09 0)
+    (property "Datasheet" "" (id 3) (at 164.465 71.755 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 077bc3c1-07aa-479a-a033-5a379c795ce6))
diff --git a/logboek.md b/logboek.md
index 14e9b47..7abc76a 100644
--- a/logboek.md
+++ b/logboek.md
@@ -12,4 +12,5 @@
 |Tue Feb 15 12:24:14 PM CET 2022|01:07:09|elektrisch schema (tests)|
 |Tue Feb 15 04:04:22 PM CET 2022|00:13:03|onderzoeksverslag (deelvragen)|
 |Thu Feb 17 03:56:50 PM CET 2022|02:30:20|onderzoeksverslag (antwoorden)|
+|Fri Feb 18 11:25:20 AM CET 2022|01:31:29|onderzoeksverslag (antwoorden)|
 
diff --git a/tests/readme.md b/tests/readme.md
deleted file mode 100644
index 843200f..0000000
--- a/tests/readme.md
+++ /dev/null
@@ -1,18 +0,0 @@
-# tests
-
-## the_synth library
-
-- uitvoerspanning (pp)
-- uitvoerstroom
-
-## 555 timer synth
-
-- uitvoerspanning (pp)
-- uitvoerstroom
-- is de variabele weerstandswaarde te meten zonder het gedrag van de 555 timer
-	te veranderen?
-
-## versterker circuit
-
-- aansluiten op de arduino synth (makkelijker), en kijken wat de maximale
-	uitvoerspanning en -stroom word voordat er vervorming ontstaat
diff --git a/tests/test_setup/test_setup-backups/test_setup-2022-02-15_105416.zip b/tests/test_setup/test_setup-backups/test_setup-2022-02-15_105416.zip
deleted file mode 100644
index e31afd6..0000000
--- a/tests/test_setup/test_setup-backups/test_setup-2022-02-15_105416.zip
+++ /dev/null
diff --git a/tests/test_setup/test_setup.kicad_pcb b/tests/test_setup/test_setup.kicad_pcb
deleted file mode 100644
index 28b47a1..0000000
--- a/tests/test_setup/test_setup.kicad_pcb
+++ /dev/null
@@ -1,2 +0,0 @@
-(kicad_pcb (version 20211014) (generator pcbnew)
-)
\ No newline at end of file
diff --git a/tests/test_setup/test_setup.kicad_prl b/tests/test_setup/test_setup.kicad_prl
deleted file mode 100644
index 510ef0a..0000000
--- a/tests/test_setup/test_setup.kicad_prl
+++ /dev/null
@@ -1,75 +0,0 @@
-{
-  "board": {
-    "active_layer": 0,
-    "active_layer_preset": "",
-    "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": "test_setup.kicad_prl",
-    "version": 3
-  },
-  "project": {
-    "files": []
-  }
-}
diff --git a/tests/test_setup/test_setup.kicad_pro b/tests/test_setup/test_setup.kicad_pro
deleted file mode 100644
index 894777d..0000000
--- a/tests/test_setup/test_setup.kicad_pro
+++ /dev/null
@@ -1,326 +0,0 @@
-{
-  "board": {
-    "design_settings": {
-      "defaults": {
-        "board_outline_line_width": 0.1,
-        "copper_line_width": 0.2,
-        "copper_text_size_h": 1.5,
-        "copper_text_size_v": 1.5,
-        "copper_text_thickness": 0.3,
-        "other_line_width": 0.15,
-        "silk_line_width": 0.15,
-        "silk_text_size_h": 1.0,
-        "silk_text_size_v": 1.0,
-        "silk_text_thickness": 0.15
-      },
-      "diff_pair_dimensions": [],
-      "drc_exclusions": [],
-      "rules": {
-        "min_copper_edge_clearance": 0.0,
-        "solder_mask_clearance": 0.0,
-        "solder_mask_min_width": 0.0
-      },
-      "track_widths": [],
-      "via_dimensions": []
-    },
-    "layer_presets": []
-  },
-  "boards": [],
-  "cvpcb": {
-    "equivalence_files": []
-  },
-  "erc": {
-    "erc_exclusions": [],
-    "meta": {
-      "version": 0
-    },
-    "pin_map": [
-      [
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-      [
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-        1,
-        1,
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-      ],
-      [
-        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": "test_setup.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",
-        "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,
-        "wire_width": 6.0
-      }
-    ],
-    "meta": {
-      "version": 2
-    },
-    "net_colors": null
-  },
-  "pcbnew": {
-    "last_paths": {
-      "gencad": "",
-      "idf": "",
-      "netlist": "",
-      "specctra_dsn": "",
-      "step": "",
-      "vrml": ""
-    },
-    "page_layout_descr_file": ""
-  },
-  "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,
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diff --git a/tests/test_setup/test_setup.kicad_sch b/tests/test_setup/test_setup.kicad_sch
deleted file mode 100644
index d58bb95..0000000
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+++ /dev/null
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