rev4.2: fix EMERG_SHDN stuff

README.md

@@ -87,9 +87,9 @@ be found on the PCB silkscreen.
 
 | Ref  | Quantity | Product        | Footprint   | Description | Notes |
 |:---- | --------:|:-------------- |:----------- |:----------- |:----- |
-| Q1   | 1        | Generic NMOS | SOT-23 (GSD) | N-MOSFET transistor | Make sure it is completely on at a Vgs of 3.3V! Invertor NMOS for reset signal. |
 | SW1  | 1        | Push button | THT 4-lead 6x6mm | Two-by-two push button switch, generic | Make sure the bends in the pushbutton leads are parallell with the lines on the silkscreen. |
-| R1, R2 | 2 | 220k | 0805 | Resistor | Pullup/pulldown resistors. |
+| R1   | 1 | 220k | 0805 | Resistor | Pullup/pulldown resistors. |
+| D101 | 1        | 1N4001         | SOD-123     | Generic or Schottky diode. | Reset diode to pull down the Pico's 3V3_EN line (which can be at an indeterminate voltage). |
 
 The emergency reset button will stop U100, and disable most other ICs (eg. U400, U200).
 
@@ -131,6 +131,8 @@ Note, Q300 and Q301 are selected by separate GPIO lines on the Pico.
 | Ref  | Quantity | Product        | Footprint   | Description | Notes |
 |:---- | --------:|:-------------- |:----------- |:----------- |:----- |
 | U400 | 1 | MAX4619CSE+ | SOIC-8 3.9x4.9mm | Triple analog SPDT switch | Fast SPDT switch IC, used for glitching (selecting between high and low voltage levels). |
-| R400, R401 | 2 | 220k | 0805 | Generic resistor | Pullup/pulldown resistors for the enable line of U400. |
+| R400 | 1 |  22k | 0805 | Generic resistor | Pullup/pulldown resistors for the enable line of U400. Can be used instead of D400. |
+| D400 | 1 | 1N4001 | SOD-123 | Generic or Schottky diode | Pulldown diode for the INHIBIT line of U400. Can be used instead of R400. |
+| R401 | 1 | 220k | 0805 | Generic resistor | Pullup/pulldown resistors for the enable line of U400. |
 | C400 | 1 | 10 nF | 0805 | Unpolarized (MLCC) capacitor | Decoupling capacitor for U400. Optional. |
 

controller.kicad_sch

@@ -652,6 +652,67 @@
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       )
     )
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+        (effects (font (size 1.27 1.27)))
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+        (effects (font (size 1.27 1.27)))
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+        (effects (font (size 1.27 1.27)) hide)
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+          (stroke (width 0.254) (type default) (color 0 0 0 0))
+          (fill (type none))
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+      (symbol "1N4001_1_1"
+        (pin passive line (at -3.81 0 0) (length 2.54)
+          (name "K" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
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+        (pin passive line (at 3.81 0 180) (length 2.54)
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+          (number "2" (effects (font (size 1.27 1.27))))
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@@ -1534,7 +1595,7 @@
 
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@@ -2768,10 +2837,10 @@
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@@ -4140,4 +4209,19 @@
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gerbers-rev4/glitcher-NPTH.drl

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+; DRILL file {KiCad 6.0.1} date ma 28 mrt 2022 05:32:22
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-; #@! TF.CreationDate,2022-03-28T04:13:43+02:00
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gerbers-rev4/glitcher-job.gbrjob

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       "Application": "Pcbnew",
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     },
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glitcher.kicad_sch

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     (uuid ee29d712-3378-4507-a00b-003526b29bb1)
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+    (effects (font (size 1.27 1.27)) (justify left bottom))
+    (uuid 10960e7c-b5dc-4dc6-9950-4e482961e9e5)
+  )
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   )
 
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-    (path "/00000000-0000-0000-0000-000061ca99c0/cd31d24f-2539-4e45-bae0-2bcf3b69fee6"
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-        (effects (font (size 1.27 1.27)) hide)
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@@ -448,6 +387,67 @@
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+        (effects (font (size 1.27 1.27)) hide)
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+        (effects (font (size 1.27 1.27)) hide)
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+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "50V 1A General Purpose Rectifier Diode, DO-41" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_fp_filters" "D*DO?41*" (id 6) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
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+          (number "2" (effects (font (size 1.27 1.27))))
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     (symbol "Jumper:SolderJumper_2_Open" (pin_names (offset 0) hide) (in_bom yes) (on_board yes)
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@@ -661,6 +661,9 @@
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@@ -673,18 +676,15 @@
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   )
+  (junction (at 208.28 143.51) (diameter 0) (color 0 0 0 0)
+    (uuid 4f3b0290-006c-4ba5-be42-280362fdc855)
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@@ -694,9 +694,6 @@
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@@ -712,6 +709,9 @@
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     (uuid b996f802-19ba-4c4a-8185-c7364b604dbd)
   )
+  (junction (at 195.58 143.51) (diameter 0) (color 0 0 0 0)
+    (uuid be2080a1-8da4-49a1-b603-72f9fdf31e19)
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@@ -736,7 +736,6 @@
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   (no_connect (at 135.89 53.34) (uuid 5bd58b01-d022-4a2c-9c8b-6f1e9ad7a6e0))
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@@ -758,13 +757,17 @@
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   )
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+    (stroke (width 0) (type default) (color 0 0 0 0))
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-    (uuid 1ba3e338-9465-4844-8361-6715d7885c15)
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@@ -774,6 +777,10 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
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   )
+  (wire (pts (xy 204.47 147.32) (xy 205.74 147.32))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 1d11054e-68f5-4db8-b9fc-db2d85bf58b4)
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@@ -818,15 +821,7 @@
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   )
-  (wire (pts (xy 181.61 143.51) (xy 185.42 143.51))
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     (stroke (width 0) (type default) (color 0 0 0 0))
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@@ -858,10 +853,6 @@
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@@ -878,6 +869,10 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 6fbf06b6-aa78-493f-9ea2-e7b5da773fcd)
   )
+  (wire (pts (xy 191.77 143.51) (xy 195.58 143.51))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 73af1dd6-da80-4911-b66d-f106c0c35939)
+  )
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     (stroke (width 0) (type default) (color 0 0 0 0))
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@@ -898,6 +893,10 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 7dbc22c5-2605-49f3-9f1d-f63405d96bf9)
   )
+  (wire (pts (xy 196.85 147.32) (xy 195.58 147.32))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 8079aef7-b979-4fae-aa9e-7335900b80df)
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     (stroke (width 0) (type default) (color 0 0 0 0))
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@@ -930,10 +929,6 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
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   )
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     (stroke (width 0) (type default) (color 0 0 0 0))
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@@ -942,10 +937,6 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
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-  (wire (pts (xy 196.85 137.16) (xy 196.85 143.51))
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     (stroke (width 0) (type default) (color 0 0 0 0))
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@@ -966,10 +957,6 @@
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@@ -978,6 +965,10 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 979c59a1-1de9-43fc-b9f4-a235088d2d29)
   )
+  (wire (pts (xy 205.74 143.51) (xy 208.28 143.51))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 9a40f148-adb7-43be-b954-431c2fe64d58)
+  )
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     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid 9ced52bb-c723-47f4-8061-e94bdb3ced00)
@@ -998,6 +989,10 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid adfbfe80-f647-4af0-a870-88685828effc)
   )
+  (wire (pts (xy 208.28 143.51) (xy 217.17 143.51))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid ae651304-bfef-4879-93a0-bce0f8bf0737)
+  )
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     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid aeae1c08-0511-41ff-896d-95b95a86eb35)
@@ -1010,7 +1005,11 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid b1ae57e1-dd0a-428b-abac-e543a71573b8)
   )
-  (wire (pts (xy 185.42 128.27) (xy 185.42 132.08))
+  (wire (pts (xy 205.74 147.32) (xy 205.74 143.51))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid b2a71fe1-1978-4dea-ac5d-5f19fccbeda7)
+  )
+  (wire (pts (xy 208.28 128.27) (xy 208.28 132.08))
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid b4090575-e0f4-4fd7-a720-8be7d00b822e)
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@@ -1026,10 +1025,6 @@
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     (uuid c2079b33-906e-4c67-b0b6-7e228acc166b)
   )
-  (wire (pts (xy 121.92 175.26) (xy 121.92 177.8))
-    (stroke (width 0) (type default) (color 0 0 0 0))
-    (uuid c5b9402b-8d30-445c-9fdd-677320634210)
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     (stroke (width 0) (type default) (color 0 0 0 0))
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@@ -1042,10 +1037,6 @@
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     (uuid cb35c4bf-2cc6-4f62-88e1-b2a4f9b396ce)
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-  (wire (pts (xy 121.92 177.8) (xy 121.92 180.34))
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     (stroke (width 0) (type default) (color 0 0 0 0))
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@@ -1078,11 +1069,7 @@
     (stroke (width 0) (type default) (color 0 0 0 0))
     (uuid ee9a0c8f-943f-47e4-bc71-bfaad15db956)
   )
-  (wire (pts (xy 186.69 143.51) (xy 185.42 143.51))
+  (wire (pts (xy 208.28 139.7) (xy 208.28 143.51))
-    (stroke (width 0) (type default) (color 0 0 0 0))
-    (uuid f0a8a8b2-060b-4680-8748-17fde4dee283)
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     (stroke (width 0) (type default) (color 0 0 0 0))
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   )
@@ -1103,8 +1090,8 @@
     (uuid fbcf4427-f530-4045-84ee-05aa657351f4)
   )
 
-  (text "can't use only diode pulldowns, we also\nneed a pullup to set the default value,\nEMERG_SHDN provides this\n\nMAX_EN being low while EMERG_SHDN being\nhigh will make a 22k/220k R divider, the\npin will then dip to about 0.3V which is\nbelow the MAX4619's threshold voltage\n(0.8V @ 5V power) for disabling"
+  (text "MAX_EN is hiZ when\nEMERG_SHDN=1. so this\npullup automatically\nprioritizes the SHDN\n\nplace only one of D400/R400"
-    (at 128.27 187.96 0)
+    (at 207.01 157.48 0)
     (effects (font (size 1.27 1.27)) (justify left bottom))
     (uuid 0315f3e2-6449-4efa-b116-cdff3ca2a8c1)
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@@ -1129,7 +1116,7 @@
     (effects (font (size 1.27 1.27)) (justify left bottom))
     (uuid c89edaff-35c8-4830-846f-4146c6f59421)
   )
-  (label "INHIBIT" (at 207.01 143.51 180)
+  (label "INHIBIT" (at 217.17 143.51 180)
     (effects (font (size 1.27 1.27)) (justify right bottom))
     (uuid f91792af-29a6-463e-b4a0-bad2f1f5a120)
   )
@@ -1141,13 +1128,6 @@
       (effects (font (size 1.27 1.27)) (justify right) hide)
     )
   )
-  (global_label "EMERG_SHDN" (shape input) (at 109.22 180.34 180) (fields_autoplaced)
-    (effects (font (size 1.27 1.27)) (justify right))
-    (uuid 064853d1-fee5-4dc2-a187-8cbdd26d3919)
-    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 220.98 74.93 0)
-      (effects (font (size 1.27 1.27)) hide)
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-  )
   (global_label "DAC_HI" (shape input) (at 172.72 91.44 0) (fields_autoplaced)
     (effects (font (size 1.27 1.27)) (justify left))
     (uuid 5761bebb-b7f8-4719-8f22-898d69bd4f5d)
@@ -1155,24 +1135,10 @@
       (effects (font (size 1.27 1.27)) (justify left) hide)
     )
   )
-  (global_label "MAX_EN" (shape input) (at 109.22 175.26 180) (fields_autoplaced)
+  (global_label "MAX_EN" (shape input) (at 191.77 143.51 180) (fields_autoplaced)
-    (effects (font (size 1.27 1.27)) (justify right))
-    (uuid 7c1dbd41-291a-4aad-bf3b-16497f84df7b)
-    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 17.78 67.31 0)
-      (effects (font (size 1.27 1.27)) hide)
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-  (global_label "EMERG_SHDN" (shape input) (at 196.85 137.16 90) (fields_autoplaced)
-    (effects (font (size 1.27 1.27)) (justify left))
-    (uuid 85e49431-f417-4c75-b78c-8e4650ea5391)
-    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 302.26 248.92 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-  )
-  (global_label "MAX_EN" (shape input) (at 181.61 143.51 180) (fields_autoplaced)
     (effects (font (size 1.27 1.27)) (justify right))
     (uuid 863ee6bd-9a8e-49fb-84d6-8d00fe76baf1)
-    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 90.17 35.56 0)
+    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 100.33 35.56 0)
       (effects (font (size 1.27 1.27)) hide)
     )
   )
@@ -1389,6 +1355,21 @@
     (pin "1" (uuid 44e5b2d0-873b-46ba-b4d0-6fb5dec2f1c1))
   )
 
+  (symbol (lib_id "Diode:1N4001") (at 200.66 147.32 0) (mirror x) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 5ed5ba52-9f14-4a9b-ab62-88877ee7e18e)
+    (property "Reference" "D400" (id 0) (at 200.66 152.5565 0))
+    (property "Value" "1N4001" (id 1) (at 200.66 149.7814 0))
+    (property "Footprint" "Diode_SMD:D_SOD-123" (id 2) (at 200.66 142.875 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "http://www.vishay.com/docs/88503/1n4001.pdf" (id 3) (at 200.66 147.32 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 6c4f0d6c-0d77-4d8b-b0a5-90de900a2f98))
+    (pin "2" (uuid b1b9bf63-7ffe-4fea-89ac-5c816787830b))
+  )
+
   (symbol (lib_id "power:GND") (at 140.97 148.59 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid 64c927fd-32da-4c29-b7c7-88c99910be4d)
@@ -1430,15 +1411,15 @@
     (pin "8" (uuid 0a534185-2a34-4045-8c23-50e106a72b98))
   )
 
-  (symbol (lib_id "Device:R") (at 190.5 143.51 90) (unit 1)
+  (symbol (lib_id "Device:R") (at 200.66 143.51 90) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 7f388750-c887-422e-a409-da4e6f80947a)
-    (property "Reference" "R400" (id 0) (at 190.5 138.5275 90))
+    (property "Reference" "R400" (id 0) (at 200.66 138.5275 90))
-    (property "Value" "22k" (id 1) (at 190.5 141.3026 90))
+    (property "Value" "22k" (id 1) (at 200.66 141.3026 90))
-    (property "Footprint" "Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder" (id 2) (at 190.5 145.288 90)
+    (property "Footprint" "Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder" (id 2) (at 200.66 145.288 90)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 190.5 143.51 0)
+    (property "Datasheet" "~" (id 3) (at 200.66 143.51 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 8f47e141-9b64-4e6f-9819-39ee3eeb54be))
@@ -1470,35 +1451,35 @@
     (pin "8" (uuid d3450103-59a3-4864-b5e6-64df06f11f30))
   )
 
-  (symbol (lib_id "power:+3V3") (at 185.42 128.27 0) (unit 1)
+  (symbol (lib_id "power:+3V3") (at 208.28 128.27 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid 9724a377-bba0-4230-86a1-a23ff9abdc9e)
-    (property "Reference" "#PWR0161" (id 0) (at 185.42 132.08 0)
+    (property "Reference" "#PWR0161" (id 0) (at 208.28 132.08 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Value" "+3V3" (id 1) (at 185.801 123.8758 0))
+    (property "Value" "+3V3" (id 1) (at 208.661 123.8758 0))
-    (property "Footprint" "" (id 2) (at 185.42 128.27 0)
+    (property "Footprint" "" (id 2) (at 208.28 128.27 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "" (id 3) (at 185.42 128.27 0)
+    (property "Datasheet" "" (id 3) (at 208.28 128.27 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid c5f2f2fb-fc4d-451b-93a7-10efa97c1ed0))
   )
 
-  (symbol (lib_id "Device:R") (at 185.42 135.89 0) (mirror x) (unit 1)
+  (symbol (lib_id "Device:R") (at 208.28 135.89 180) (unit 1)
     (in_bom yes) (on_board yes) (fields_autoplaced)
     (uuid 9d93a772-11c7-46b0-b069-4bf91894f1dc)
-    (property "Reference" "R401" (id 0) (at 183.642 134.9815 0)
+    (property "Reference" "R401" (id 0) (at 210.058 134.9815 0)
       (effects (font (size 1.27 1.27)) (justify right))
     )
-    (property "Value" "220k" (id 1) (at 183.642 137.7566 0)
+    (property "Value" "220k" (id 1) (at 210.058 137.7566 0)
       (effects (font (size 1.27 1.27)) (justify right))
     )
-    (property "Footprint" "Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder" (id 2) (at 183.642 135.89 90)
+    (property "Footprint" "Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder" (id 2) (at 210.058 135.89 90)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 185.42 135.89 0)
+    (property "Datasheet" "~" (id 3) (at 208.28 135.89 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (pin "1" (uuid 200efc76-55d3-4b5a-9e0a-d044ef31ef32))
@@ -1557,34 +1538,4 @@
     )
     (pin "1" (uuid a59d7799-131b-42eb-b396-4b25bf9b2c4e))
   )
-
-  (symbol (lib_id "Device:D") (at 115.57 175.26 0) (unit 1)
-    (in_bom no) (on_board no)
-    (uuid cd31d24f-2539-4e45-bae0-2bcf3b69fee6)
-    (property "Reference" "D400" (id 0) (at 115.57 169.7482 0))
-    (property "Value" "1N4001" (id 1) (at 115.57 172.0596 0))
-    (property "Footprint" "Diode_SMD:D_SOD-123" (id 2) (at 115.57 175.26 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Datasheet" "~" (id 3) (at 115.57 175.26 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (pin "1" (uuid f0625f86-6b6f-4701-bae8-155df6c5a4b2))
-    (pin "2" (uuid 9eeb9ba3-fcbe-4512-be0d-ab3150c61247))
-  )
-
-  (symbol (lib_id "Device:D") (at 115.57 180.34 0) (mirror x) (unit 1)
-    (in_bom no) (on_board no)
-    (uuid f654ef7c-31e7-4910-813b-2209a07c2bfc)
-    (property "Reference" "D401" (id 0) (at 115.57 185.8518 0))
-    (property "Value" "1N4001" (id 1) (at 115.57 183.5404 0))
-    (property "Footprint" "Diode_SMD:D_SOD-123" (id 2) (at 115.57 180.34 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Datasheet" "~" (id 3) (at 115.57 180.34 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (pin "1" (uuid a121e607-0ec0-48fc-9192-13979e6f818b))
-    (pin "2" (uuid cfad1f35-f936-4a0c-bf71-8f9b0b2e4cbe))
-  )
 )