more test schematics

2 files changed, 298 insertions, 19 deletions

diff --git a/hardware/hardware.kicad_sch b/hardware/hardware.kicad_sch
index 61cfdc7..ed8ba3a 100644
--- a/hardware/hardware.kicad_sch
+++ b/hardware/hardware.kicad_sch
@@ -156,6 +156,56 @@
         )
       )
     )
+    (symbol "Device:R_Variable" (pin_numbers hide) (pin_names (offset 0)) (in_bom yes) (on_board yes)
+      (property "Reference" "R" (id 0) (at 2.54 -2.54 90)
+        (effects (font (size 1.27 1.27)) (justify left))
+      )
+      (property "Value" "R_Variable" (id 1) (at -2.54 -1.27 90)
+        (effects (font (size 1.27 1.27)) (justify left))
+      )
+      (property "Footprint" "" (id 2) (at -1.778 0 90)
+        (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" "R res resistor variable potentiometer rheostat" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Variable resistor" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_fp_filters" "R_*" (id 6) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "R_Variable_0_1"
+        (rectangle (start -1.016 -2.54) (end 1.016 2.54)
+          (stroke (width 0.254) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 2.54 1.524)
+            (xy 2.54 2.54)
+            (xy 1.524 2.54)
+            (xy 2.54 2.54)
+            (xy -2.032 -2.032)
+          )
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+      )
+      (symbol "R_Variable_1_1"
+        (pin passive line (at 0 3.81 270) (length 1.27)
+          (name "~" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+        (pin passive line (at 0 -3.81 90) (length 1.27)
+          (name "~" (effects (font (size 1.27 1.27))))
+          (number "2" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
     (symbol "MCU_Module:Arduino_UNO_R3" (in_bom yes) (on_board yes)
       (property "Reference" "A" (id 0) (at -10.16 23.495 0)
         (effects (font (size 1.27 1.27)) (justify left bottom))
@@ -484,24 +534,43 @@
   (junction (at 40.64 81.915) (diameter 0) (color 0 0 0 0)
     (uuid 37b27594-c35f-4f26-9829-b63bd345830f)
   )
+  (junction (at 217.17 42.545) (diameter 0) (color 0 0 0 0)
+    (uuid 5fcc8dc6-a6f5-4eec-b464-e40f587fbd86)
+  )
+  (junction (at 196.85 36.195) (diameter 0) (color 0 0 0 0)
+    (uuid 89f44b29-d740-401e-a7c0-6b89bc09075e)
+  )
   (junction (at 90.17 71.12) (diameter 0) (color 0 0 0 0)
     (uuid b6efb954-d7ea-4db4-8640-99a872beb328)
   )
+  (junction (at 217.17 52.705) (diameter 0) (color 0 0 0 0)
+    (uuid beedad85-57b3-48d4-a5b8-762bf1ae0bb8)
+  )
   (junction (at 129.54 66.04) (diameter 0) (color 0 0 0 0)
     (uuid d16f8fb2-9d1f-410a-86cd-c0b76012c497)
   )
 
+  (no_connect (at 209.55 47.625) (uuid 6d246163-ffcf-4dd4-87aa-1be8d3d72297))
   (no_connect (at 124.46 71.12) (uuid 8f669bf3-e82b-44ff-b6c4-e2a90e1acb3e))
+  (no_connect (at 184.15 47.625) (uuid b25bf3fc-4b8c-470d-8309-aa0eec2b9625))
   (no_connect (at 55.88 62.23) (uuid cc4f0b33-ccfd-419b-9659-a88488fda9d5))
 
   (wire (pts (xy 87.63 71.12) (xy 90.17 71.12))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 062449b5-17eb-40bf-8fd8-c3da6187d593)
   )
+  (wire (pts (xy 209.55 52.705) (xy 217.17 52.705))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 129546ed-2b85-41a5-b497-a28b9903df10)
+  )
   (wire (pts (xy 43.18 81.915) (xy 40.64 81.915))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 1d63ba5a-671a-4ee7-a188-83c2a30d489f)
   )
+  (wire (pts (xy 181.61 27.305) (xy 217.17 27.305))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 1eba3d89-5a1f-4d8c-8008-afdc84081042)
+  )
   (wire (pts (xy 129.54 66.04) (xy 138.43 66.04))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 2035b038-626c-4463-b822-6ed6b0e3e1ab)
@@ -522,10 +591,18 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 37e24b65-62c8-4030-bef4-b6f152e26d77)
   )
+  (wire (pts (xy 217.17 52.705) (xy 217.17 42.545))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 37ed5b2e-016e-454c-8def-07acda9e0018)
+  )
   (wire (pts (xy 97.79 38.735) (xy 97.79 40.005))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 3d0c09c7-e38a-4a00-b942-2fdbe1f6dbf2)
   )
+  (wire (pts (xy 184.15 42.545) (xy 181.61 42.545))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 3fa169e9-81d1-4326-8df0-4b0813f29a1d)
+  )
   (wire (pts (xy 127 38.735) (xy 127 40.005))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 49c1c4f0-cf9a-4997-982f-1293c7f8c3d1)
@@ -570,7 +647,7 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 9fcefa51-bdc7-4659-a05d-e58513b2152d)
   )
-  (wire (pts (xy 168.275 67.945) (xy 170.815 67.945))
+  (wire (pts (xy 150.495 40.005) (xy 153.035 40.005))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid aa531aa9-a77a-49b0-b1dc-f96d3eec3bc5)
   )
@@ -578,10 +655,18 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid acf81f41-e953-4bf3-a109-1c59a82f6fa5)
   )
+  (wire (pts (xy 196.85 36.195) (xy 196.85 37.465))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid b10b05f3-37bb-498e-b31d-3854529577a9)
+  )
   (wire (pts (xy 112.395 38.735) (xy 111.125 38.735))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid b17c6209-2716-496e-a85f-8216d02fb115)
   )
+  (wire (pts (xy 217.17 27.305) (xy 217.17 42.545))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid b403ab6d-dc62-41b5-82f0-457fb3de1c23)
+  )
   (wire (pts (xy 90.17 71.12) (xy 99.06 71.12))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid ba6066f7-4c6e-404b-a0ec-f21f92be13d9)
@@ -594,6 +679,10 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid ce4ba6fd-3071-4764-967a-ee436749fde0)
   )
+  (wire (pts (xy 181.61 42.545) (xy 181.61 27.305))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid d76e44ec-fd0b-417b-bb79-3b25ddc4241b)
+  )
   (wire (pts (xy 129.54 66.04) (xy 129.54 67.31))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid dd5a7337-837a-41d9-8bdf-af2462189290)
@@ -602,12 +691,20 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid ef0e1423-0384-45bb-a4c4-a0a734e42a5f)
   )
+  (wire (pts (xy 196.85 34.925) (xy 196.85 36.195))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid f651eb1d-6032-4461-a4c6-b3851a4abb2c)
+  )
   (wire (pts (xy 55.88 52.07) (xy 53.34 52.07))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid ff86d4a9-3ed1-49ff-b332-47f615b32b3a)
   )
 
-  (text "Keyboard simulator" (at 168.91 74.295 0)
+  (text "555 RCO\n" (at 179.705 60.325 0)
+    (effects (font (size 1.27 1.27)) (justify left bottom))
+    (uuid 1641185a-e805-403b-b872-eb3450148cc8)
+  )
+  (text "Keyboard simulator" (at 151.13 46.355 0)
     (effects (font (size 1.27 1.27)) (justify left bottom))
     (uuid 93afe5b9-ac56-4aea-8798-699080b634cf)
   )
@@ -648,10 +745,10 @@
       (effects (font (size 1.27 1.27)) (justify right) hide)
     )
   )
-  (global_label "KB_IN" (shape output) (at 170.815 67.945 0) (fields_autoplaced)
+  (global_label "KB_IN" (shape output) (at 153.035 40.005 0) (fields_autoplaced)
     (effects (font (size 1.27 1.27)) (justify left))
     (uuid 52bb253e-2fc8-4be9-a67a-eb039f698bc3)
-    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 178.671 67.8656 0)
+    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 160.891 39.9256 0)
       (effects (font (size 1.27 1.27)) (justify left) hide)
     )
   )
@@ -698,19 +795,19 @@
     )
   )
 
-  (symbol (lib_id "Device:R_Potentiometer") (at 164.465 67.945 0) (unit 1)
+  (symbol (lib_id "Device:R_Potentiometer") (at 146.685 40.005 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 030ef28a-29d4-4f58-92e8-740bf14ab01d)
-    (property "Reference" "RV4" (id 0) (at 161.925 66.6749 0)
+    (property "Reference" "RV4" (id 0) (at 144.145 38.7349 0)
       (effects (font (size 1.27 1.27)) (justify right))
     )
-    (property "Value" ">10k" (id 1) (at 161.925 69.2149 0)
+    (property "Value" ">10k" (id 1) (at 144.145 41.2749 0)
       (effects (font (size 1.27 1.27)) (justify right))
     )
-    (property "Footprint" "" (id 2) (at 164.465 67.945 0)
+    (property "Footprint" "" (id 2) (at 146.685 40.005 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 164.465 67.945 0)
+    (property "Datasheet" "~" (id 3) (at 146.685 40.005 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid bca4b51f-7877-4161-8997-7e44cb244d10))
@@ -798,6 +895,22 @@
     (pin "9" (uuid 15189cef-9045-423b-b4f6-a763d4e75704))
   )
 
+  (symbol (lib_id "power:GND") (at 196.85 57.785 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 2415f537-fa6d-4c04-bd97-00b9f7ab939d)
+    (property "Reference" "#PWR?" (id 0) (at 196.85 64.135 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "GND" (id 1) (at 196.85 62.865 0))
+    (property "Footprint" "" (id 2) (at 196.85 57.785 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 196.85 57.785 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid b75ad8c5-9f55-49ef-9af8-7ab1b11ab9d4))
+  )
+
   (symbol (lib_id "Device:R_Potentiometer") (at 92.71 38.735 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 2d38429c-e76f-4ac3-a609-eca610b831a6)
@@ -850,6 +963,22 @@
     (pin "1" (uuid 1ed213bd-d7e6-42a0-972d-023cb692f939))
   )
 
+  (symbol (lib_id "power:VCC") (at 196.85 34.925 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 3ae98a70-72b8-4d72-8f0c-ecef7b1ca6d6)
+    (property "Reference" "#PWR?" (id 0) (at 196.85 38.735 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "VCC" (id 1) (at 200.025 30.48 0))
+    (property "Footprint" "" (id 2) (at 196.85 34.925 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 196.85 34.925 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid f930fa91-6adf-4e04-b42b-e0932fc06543))
+  )
+
   (symbol (lib_id "power:GND") (at 121.92 42.545 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 3cf194f2-65e6-44c9-90d0-3a06c4a81680)
@@ -918,6 +1047,31 @@
     (pin "1" (uuid 124d9163-603b-4839-ace6-3fd5affd9dd4))
   )
 
+  (symbol (lib_id "Timer:NE555P") (at 196.85 47.625 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 582bf52d-f931-4c83-b941-f1087e1fcfee)
+    (property "Reference" "U2" (id 0) (at 198.8694 34.29 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "NE555P" (id 1) (at 198.8694 36.83 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "Package_DIP:DIP-8_W7.62mm" (id 2) (at 213.36 57.785 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "http://www.ti.com/lit/ds/symlink/ne555.pdf" (id 3) (at 218.44 57.785 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid f7aa75c5-0bfb-4814-b8eb-5f8a9a128aa9))
+    (pin "8" (uuid 66cddf54-c141-4b9d-b300-069491227c2d))
+    (pin "2" (uuid 9dffc0da-762b-42b7-80b1-72a451bb294f))
+    (pin "3" (uuid a8e78b6b-5175-49a4-b7f2-c08b88186745))
+    (pin "4" (uuid 5f10ab2e-0baa-42eb-b877-7c3c9e704ef3))
+    (pin "5" (uuid 65fd9534-1b91-42a6-8ecd-7a42d8ae4ade))
+    (pin "6" (uuid 775b50f1-c021-45e5-b4f4-3da4bfa305be))
+    (pin "7" (uuid 2e7f3dd4-50ff-427a-80eb-8563e69a085c))
+  )
+
   (symbol (lib_id "power:VCC") (at 111.76 60.96 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 6e2bde36-3557-450e-b921-7aec7811cf84)
@@ -950,6 +1104,22 @@
     (pin "1" (uuid bcbd0c92-9e02-4689-b73d-64dd65e74f39))
   )
 
+  (symbol (lib_id "power:GND") (at 189.23 36.195 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 727bb838-f866-4679-abf4-a9571f8f8978)
+    (property "Reference" "#PWR?" (id 0) (at 189.23 42.545 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "GND" (id 1) (at 186.055 36.195 0))
+    (property "Footprint" "" (id 2) (at 189.23 36.195 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 189.23 36.195 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 62a648e6-0238-4535-a793-8caa6da5255d))
+  )
+
   (symbol (lib_id "Device:C") (at 129.54 80.01 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 7b59e377-eaf2-4bc6-9868-4ac0387776ca)
@@ -985,6 +1155,22 @@
     (pin "1" (uuid 8427d1ff-9bd5-468e-8ba1-371c45e5ea66))
   )
 
+  (symbol (lib_id "power:VCC") (at 184.15 52.705 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 8bb2ea49-8b54-4a72-9f61-f9dccb873903)
+    (property "Reference" "#PWR?" (id 0) (at 184.15 56.515 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "VCC" (id 1) (at 181.61 52.705 0))
+    (property "Footprint" "" (id 2) (at 184.15 52.705 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 184.15 52.705 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 3097fea7-46a7-47a9-9cae-e148c8b5c995))
+  )
+
   (symbol (lib_id "Device:R") (at 129.54 71.12 180) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 8bc7a607-d9e6-499f-b80c-da544e1f37a7)
@@ -1020,17 +1206,33 @@
     (pin "1" (uuid 2acfbcc6-50ec-46ac-b807-ebccf0e1e964))
   )
 
-  (symbol (lib_id "power:VCC") (at 164.465 64.135 0) (unit 1)
+  (symbol (lib_id "power:GND") (at 217.17 60.325 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid b744e36e-566b-4224-b18a-41cbe8401bfc)
+    (property "Reference" "#PWR?" (id 0) (at 217.17 66.675 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "GND" (id 1) (at 217.17 65.405 0))
+    (property "Footprint" "" (id 2) (at 217.17 60.325 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 217.17 60.325 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 9f2be57b-f2b6-4741-9e66-657ce79a4cef))
+  )
+
+  (symbol (lib_id "power:VCC") (at 146.685 36.195 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid bb12025c-5159-48fa-8bae-9e384d5661d4)
-    (property "Reference" "#PWR?" (id 0) (at 164.465 67.945 0)
+    (property "Reference" "#PWR?" (id 0) (at 146.685 40.005 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Value" "VCC" (id 1) (at 164.465 58.42 0))
-    (property "Footprint" "" (id 2) (at 164.465 64.135 0)
+    (property "Value" "VCC" (id 1) (at 146.685 30.48 0))
+    (property "Footprint" "" (id 2) (at 146.685 36.195 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "" (id 3) (at 164.465 64.135 0)
+    (property "Datasheet" "" (id 3) (at 146.685 36.195 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid cf5fc289-f648-4b87-b433-3a697e042445))
@@ -1052,6 +1254,25 @@
     (pin "1" (uuid 3b6ef670-4302-41d4-8379-e213696d052f))
   )
 
+  (symbol (lib_id "Device:C") (at 217.17 56.515 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid bcc209c9-cbec-42e5-9ca5-52122fa9f318)
+    (property "Reference" "C5" (id 0) (at 220.98 55.2449 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "10u" (id 1) (at 220.98 57.7849 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (id 2) (at 218.1352 60.325 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 217.17 56.515 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 87945009-417b-44bf-aa50-f351d8b17c83))
+    (pin "2" (uuid e35b2cda-de7c-4d93-8682-8f1518325096))
+  )
+
   (symbol (lib_id "power:VCC") (at 121.92 34.925 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid c383d752-fc09-42c1-a9f9-58fbd128a266)
@@ -1093,6 +1314,21 @@
     (pin "7" (uuid e8a5d0de-f294-42b4-a32d-95b01f36190d))
   )
 
+  (symbol (lib_id "Device:R_Variable") (at 213.36 42.545 270) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid cea549f3-4908-4806-b11c-6b7ed73d9417)
+    (property "Reference" "R9" (id 0) (at 213.36 34.925 90))
+    (property "Value" "KB_R" (id 1) (at 213.36 37.465 90))
+    (property "Footprint" "" (id 2) (at 213.36 40.767 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 213.36 42.545 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 0990a76c-5c66-4848-854c-27bebb45191f))
+    (pin "2" (uuid 7b27df6c-eff9-473d-abf5-585d52c2f296))
+  )
+
   (symbol (lib_id "power:GND") (at 111.76 81.28 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid d1df943f-6112-4f25-89ec-0b0227297131)
@@ -1109,6 +1345,21 @@
     (pin "1" (uuid 4937ca3a-7a04-40fa-a3fa-ce7da6a1c4a8))
   )
 
+  (symbol (lib_id "Device:C") (at 193.04 36.195 90) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid d9ecd9ae-ef0a-439f-b17a-557e46b82925)
+    (property "Reference" "C4" (id 0) (at 193.04 29.21 90))
+    (property "Value" "0.1u" (id 1) (at 193.04 31.75 90))
+    (property "Footprint" "" (id 2) (at 196.85 35.2298 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 193.04 36.195 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid c7c0e390-c203-4145-83d2-d45b2a38bf27))
+    (pin "2" (uuid 482345a1-5db6-4976-998d-99689809f8b9))
+  )
+
   (symbol (lib_id "power:GND") (at 107.315 42.545 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid ea27d51e-f893-40b7-af48-880886ef6dad)
@@ -1164,17 +1415,17 @@
     (pin "2" (uuid 963547e7-ad6a-4819-b4bf-65e5dca35964))
   )
 
-  (symbol (lib_id "power:GND") (at 164.465 71.755 0) (unit 1)
+  (symbol (lib_id "power:GND") (at 146.685 43.815 0) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid fb9ac281-071b-46bd-b8e9-da54888ef022)
-    (property "Reference" "#PWR?" (id 0) (at 164.465 78.105 0)
+    (property "Reference" "#PWR?" (id 0) (at 146.685 50.165 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Value" "GND" (id 1) (at 164.465 76.835 0))
-    (property "Footprint" "" (id 2) (at 164.465 71.755 0)
+    (property "Value" "GND" (id 1) (at 146.685 48.895 0))
+    (property "Footprint" "" (id 2) (at 146.685 43.815 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "" (id 3) (at 164.465 71.755 0)
+    (property "Datasheet" "" (id 3) (at 146.685 43.815 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 077bc3c1-07aa-479a-a033-5a379c795ce6))
@@ -1188,12 +1439,18 @@
     (path "/091e562c-65c9-4ad8-93f4-5ada3d9f87e0"
       (reference "#PWR?") (unit 1) (value "GND") (footprint "")
     )
+    (path "/2415f537-fa6d-4c04-bd97-00b9f7ab939d"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
     (path "/2dce8d50-eb60-4788-92c6-d523a3ac6411"
       (reference "#PWR?") (unit 1) (value "GND") (footprint "")
     )
     (path "/365e72a4-b4a8-42c1-ba94-eb0f9c9fd3ff"
       (reference "#PWR?") (unit 1) (value "GND") (footprint "")
     )
+    (path "/3ae98a70-72b8-4d72-8f0c-ecef7b1ca6d6"
+      (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
+    )
     (path "/3cf194f2-65e6-44c9-90d0-3a06c4a81680"
       (reference "#PWR?") (unit 1) (value "GND") (footprint "")
     )
@@ -1209,12 +1466,21 @@
     (path "/6f532666-cee9-4bae-b892-46c8ec2931b2"
       (reference "#PWR?") (unit 1) (value "GND") (footprint "")
     )
+    (path "/727bb838-f866-4679-abf4-a9571f8f8978"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
     (path "/89247482-8b3e-43aa-9bf8-11044232e827"
       (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
     )
+    (path "/8bb2ea49-8b54-4a72-9f61-f9dccb873903"
+      (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
+    )
     (path "/8bd66290-3e69-4a6a-8852-4b72e4f1a29a"
       (reference "#PWR?") (unit 1) (value "GND") (footprint "")
     )
+    (path "/b744e36e-566b-4224-b18a-41cbe8401bfc"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
     (path "/bb12025c-5159-48fa-8bae-9e384d5661d4"
       (reference "#PWR?") (unit 1) (value "VCC") (footprint "")
     )
@@ -1245,9 +1511,18 @@
     (path "/7b59e377-eaf2-4bc6-9868-4ac0387776ca"
       (reference "C3") (unit 1) (value "10") (footprint "")
     )
+    (path "/d9ecd9ae-ef0a-439f-b17a-557e46b82925"
+      (reference "C4") (unit 1) (value "0.1u") (footprint "")
+    )
+    (path "/bcc209c9-cbec-42e5-9ca5-52122fa9f318"
+      (reference "C5") (unit 1) (value "10u") (footprint "")
+    )
     (path "/8bc7a607-d9e6-499f-b80c-da544e1f37a7"
       (reference "R1") (unit 1) (value "33k") (footprint "")
     )
+    (path "/cea549f3-4908-4806-b11c-6b7ed73d9417"
+      (reference "R9") (unit 1) (value "KB_R") (footprint "")
+    )
     (path "/2d38429c-e76f-4ac3-a609-eca610b831a6"
       (reference "RV1") (unit 1) (value "R_Potentiometer") (footprint "")
     )
@@ -1263,5 +1538,8 @@
     (path "/c8a3bad8-b631-46f3-ad1c-65cbb9e97856"
       (reference "U1") (unit 1) (value "NE555P") (footprint "Package_DIP:DIP-8_W7.62mm")
     )
+    (path "/582bf52d-f931-4c83-b941-f1087e1fcfee"
+      (reference "U2") (unit 1) (value "NE555P") (footprint "Package_DIP:DIP-8_W7.62mm")
+    )
   )
 )
diff --git a/logboek.md b/logboek.md
index 4da948e..b5b5ec0 100644
--- a/logboek.md
+++ b/logboek.md
@@ -14,4 +14,5 @@
 |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)|
 |Sat Feb 19 11:55:21 AM CET 2022|01:21:39|onderzoeksverslag (antwoorden)|
+|Sat Feb 19 12:02:07 PM CET 2022|00:06:06|elektrisch schema (tests)|