schematics

4 files changed, 1247 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..810b79b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/fp-info-cache
+/*-bak
diff --git a/lego-piano.kicad_pcb b/lego-piano.kicad_pcb
new file mode 100644
index 0000000..3568e0d
--- /dev/null
+++ b/lego-piano.kicad_pcb
@@ -0,0 +1,649 @@
+(kicad_pcb (version 20171130) (host pcbnew 5.1.6)
+
+  (general
+    (thickness 1.6)
+    (drawings 0)
+    (tracks 0)
+    (zones 0)
+    (modules 13)
+    (nets 15)
+  )
+
+  (page A4)
+  (layers
+    (0 F.Cu signal)
+    (31 B.Cu signal)
+    (32 B.Adhes user)
+    (33 F.Adhes user)
+    (34 B.Paste user)
+    (35 F.Paste user)
+    (36 B.SilkS user)
+    (37 F.SilkS user)
+    (38 B.Mask user)
+    (39 F.Mask user)
+    (40 Dwgs.User user)
+    (41 Cmts.User user)
+    (42 Eco1.User user)
+    (43 Eco2.User user)
+    (44 Edge.Cuts user)
+    (45 Margin user)
+    (46 B.CrtYd user)
+    (47 F.CrtYd user)
+    (48 B.Fab user)
+    (49 F.Fab user)
+  )
+
+  (setup
+    (last_trace_width 0.25)
+    (trace_clearance 0.2)
+    (zone_clearance 0.508)
+    (zone_45_only no)
+    (trace_min 0.2)
+    (via_size 0.8)
+    (via_drill 0.4)
+    (via_min_size 0.4)
+    (via_min_drill 0.3)
+    (uvia_size 0.3)
+    (uvia_drill 0.1)
+    (uvias_allowed no)
+    (uvia_min_size 0.2)
+    (uvia_min_drill 0.1)
+    (edge_width 0.05)
+    (segment_width 0.2)
+    (pcb_text_width 0.3)
+    (pcb_text_size 1.5 1.5)
+    (mod_edge_width 0.12)
+    (mod_text_size 1 1)
+    (mod_text_width 0.15)
+    (pad_size 1.524 1.524)
+    (pad_drill 0.762)
+    (pad_to_mask_clearance 0.05)
+    (aux_axis_origin 0 0)
+    (visible_elements FFFFFF7F)
+    (pcbplotparams
+      (layerselection 0x010fc_ffffffff)
+      (usegerberextensions false)
+      (usegerberattributes true)
+      (usegerberadvancedattributes true)
+      (creategerberjobfile true)
+      (excludeedgelayer true)
+      (linewidth 0.100000)
+      (plotframeref false)
+      (viasonmask false)
+      (mode 1)
+      (useauxorigin false)
+      (hpglpennumber 1)
+      (hpglpenspeed 20)
+      (hpglpendiameter 15.000000)
+      (psnegative false)
+      (psa4output false)
+      (plotreference true)
+      (plotvalue true)
+      (plotinvisibletext false)
+      (padsonsilk false)
+      (subtractmaskfromsilk false)
+      (outputformat 1)
+      (mirror false)
+      (drillshape 1)
+      (scaleselection 1)
+      (outputdirectory ""))
+  )
+
+  (net 0 "")
+  (net 1 /sense2)
+  (net 2 /sense1)
+  (net 3 /row2)
+  (net 4 /row1)
+  (net 5 /col2)
+  (net 6 /col1)
+  (net 7 GND)
+  (net 8 "Net-(Q1-Pad2)")
+  (net 9 "Net-(Q2-Pad2)")
+  (net 10 "Net-(Q3-Pad3)")
+  (net 11 +5V)
+  (net 12 "Net-(Q4-Pad3)")
+  (net 13 "Net-(R1-Pad2)")
+  (net 14 "Net-(R3-Pad2)")
+
+  (net_class Default "This is the default net class."
+    (clearance 0.2)
+    (trace_width 0.25)
+    (via_dia 0.8)
+    (via_drill 0.4)
+    (uvia_dia 0.3)
+    (uvia_drill 0.1)
+    (add_net +5V)
+    (add_net /col1)
+    (add_net /col2)
+    (add_net /row1)
+    (add_net /row2)
+    (add_net /sense1)
+    (add_net /sense2)
+    (add_net GND)
+    (add_net "Net-(Q1-Pad2)")
+    (add_net "Net-(Q2-Pad2)")
+    (add_net "Net-(Q3-Pad3)")
+    (add_net "Net-(Q4-Pad3)")
+    (add_net "Net-(R1-Pad2)")
+    (add_net "Net-(R3-Pad2)")
+  )
+
+  (module OptoDevice:OnSemi_CASE100CY (layer F.Cu) (tedit 5B870A92) (tstamp 5F382268)
+    (at 116.19 100.14)
+    (descr "OnSemi CASE 100CY, light-direction upwards, see http://www.onsemi.com/pub/Collateral/QRE1113-D.PDF")
+    (tags "refective opto couple photo coupler")
+    (path /5F37E0E5)
+    (attr smd)
+    (fp_text reference U4 (at -2.5 0 90) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value QRE1113 (at 0 3.9) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0 0.2) (layer F.Fab)
+      (effects (font (size 0.75 0.75) (thickness 0.15)))
+    )
+    (fp_line (start 1.7 1.4) (end 1.7 -1.4) (layer F.SilkS) (width 0.12))
+    (fp_line (start -1.7 1.4) (end -1.7 -2.8) (layer F.SilkS) (width 0.12))
+    (fp_line (start -1.6 -0.8) (end -1.1 -1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.1 -1.3) (end 1.6 -1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.6 1.3) (end -1.6 -0.8) (layer F.Fab) (width 0.1))
+    (fp_line (start 1.6 1.3) (end -1.6 1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start 1.6 -1.3) (end 1.6 1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.85 -3.08) (end 1.85 -3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -1.85 -3.08) (end -1.85 3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 1.85 3.08) (end 1.85 -3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 1.85 3.08) (end -1.85 3.08) (layer F.CrtYd) (width 0.05))
+    (pad 4 smd roundrect (at 0.9 -2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 8 "Net-(Q1-Pad2)"))
+    (pad 1 smd roundrect (at -0.9 -2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 14 "Net-(R3-Pad2)"))
+    (pad 2 smd roundrect (at -0.9 2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 8 "Net-(Q1-Pad2)"))
+    (pad 3 smd roundrect (at 0.9 2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 1 /sense2))
+    (model ${KISYS3DMOD}/OptoDevice.3dshapes/OnSemi_CASE100CY.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module OptoDevice:OnSemi_CASE100CY (layer F.Cu) (tedit 5B870A92) (tstamp 5F382254)
+    (at 124.45 92.41)
+    (descr "OnSemi CASE 100CY, light-direction upwards, see http://www.onsemi.com/pub/Collateral/QRE1113-D.PDF")
+    (tags "refective opto couple photo coupler")
+    (path /5F380254)
+    (attr smd)
+    (fp_text reference U3 (at -2.5 0 90) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value QRE1113 (at 0 3.9) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0 0.2) (layer F.Fab)
+      (effects (font (size 0.75 0.75) (thickness 0.15)))
+    )
+    (fp_line (start 1.7 1.4) (end 1.7 -1.4) (layer F.SilkS) (width 0.12))
+    (fp_line (start -1.7 1.4) (end -1.7 -2.8) (layer F.SilkS) (width 0.12))
+    (fp_line (start -1.6 -0.8) (end -1.1 -1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.1 -1.3) (end 1.6 -1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.6 1.3) (end -1.6 -0.8) (layer F.Fab) (width 0.1))
+    (fp_line (start 1.6 1.3) (end -1.6 1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start 1.6 -1.3) (end 1.6 1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.85 -3.08) (end 1.85 -3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -1.85 -3.08) (end -1.85 3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 1.85 3.08) (end 1.85 -3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 1.85 3.08) (end -1.85 3.08) (layer F.CrtYd) (width 0.05))
+    (pad 4 smd roundrect (at 0.9 -2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 9 "Net-(Q2-Pad2)"))
+    (pad 1 smd roundrect (at -0.9 -2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 14 "Net-(R3-Pad2)"))
+    (pad 2 smd roundrect (at -0.9 2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 9 "Net-(Q2-Pad2)"))
+    (pad 3 smd roundrect (at 0.9 2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 1 /sense2))
+    (model ${KISYS3DMOD}/OptoDevice.3dshapes/OnSemi_CASE100CY.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module OptoDevice:OnSemi_CASE100CY (layer F.Cu) (tedit 5B870A92) (tstamp 5F382240)
+    (at 111.44 100.14)
+    (descr "OnSemi CASE 100CY, light-direction upwards, see http://www.onsemi.com/pub/Collateral/QRE1113-D.PDF")
+    (tags "refective opto couple photo coupler")
+    (path /5F37F0DD)
+    (attr smd)
+    (fp_text reference U2 (at -2.5 0 90) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value QRE1113 (at 0 3.9) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0 0.2) (layer F.Fab)
+      (effects (font (size 0.75 0.75) (thickness 0.15)))
+    )
+    (fp_line (start 1.7 1.4) (end 1.7 -1.4) (layer F.SilkS) (width 0.12))
+    (fp_line (start -1.7 1.4) (end -1.7 -2.8) (layer F.SilkS) (width 0.12))
+    (fp_line (start -1.6 -0.8) (end -1.1 -1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.1 -1.3) (end 1.6 -1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.6 1.3) (end -1.6 -0.8) (layer F.Fab) (width 0.1))
+    (fp_line (start 1.6 1.3) (end -1.6 1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start 1.6 -1.3) (end 1.6 1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.85 -3.08) (end 1.85 -3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -1.85 -3.08) (end -1.85 3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 1.85 3.08) (end 1.85 -3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 1.85 3.08) (end -1.85 3.08) (layer F.CrtYd) (width 0.05))
+    (pad 4 smd roundrect (at 0.9 -2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 9 "Net-(Q2-Pad2)"))
+    (pad 1 smd roundrect (at -0.9 -2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 13 "Net-(R1-Pad2)"))
+    (pad 2 smd roundrect (at -0.9 2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 9 "Net-(Q2-Pad2)"))
+    (pad 3 smd roundrect (at 0.9 2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 2 /sense1))
+    (model ${KISYS3DMOD}/OptoDevice.3dshapes/OnSemi_CASE100CY.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module OptoDevice:OnSemi_CASE100CY (layer F.Cu) (tedit 5B870A92) (tstamp 5F38222C)
+    (at 128.89 85.2)
+    (descr "OnSemi CASE 100CY, light-direction upwards, see http://www.onsemi.com/pub/Collateral/QRE1113-D.PDF")
+    (tags "refective opto couple photo coupler")
+    (path /5F37C030)
+    (attr smd)
+    (fp_text reference U1 (at -2.5 0 90) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value QRE1113 (at 0 3.9) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0 0.2) (layer F.Fab)
+      (effects (font (size 0.75 0.75) (thickness 0.15)))
+    )
+    (fp_line (start 1.7 1.4) (end 1.7 -1.4) (layer F.SilkS) (width 0.12))
+    (fp_line (start -1.7 1.4) (end -1.7 -2.8) (layer F.SilkS) (width 0.12))
+    (fp_line (start -1.6 -0.8) (end -1.1 -1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.1 -1.3) (end 1.6 -1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.6 1.3) (end -1.6 -0.8) (layer F.Fab) (width 0.1))
+    (fp_line (start 1.6 1.3) (end -1.6 1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start 1.6 -1.3) (end 1.6 1.3) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.85 -3.08) (end 1.85 -3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -1.85 -3.08) (end -1.85 3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 1.85 3.08) (end 1.85 -3.08) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 1.85 3.08) (end -1.85 3.08) (layer F.CrtYd) (width 0.05))
+    (pad 4 smd roundrect (at 0.9 -2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 8 "Net-(Q1-Pad2)"))
+    (pad 1 smd roundrect (at -0.9 -2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 13 "Net-(R1-Pad2)"))
+    (pad 2 smd roundrect (at -0.9 2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 8 "Net-(Q1-Pad2)"))
+    (pad 3 smd roundrect (at 0.9 2) (size 0.79 1.66) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 2 /sense1))
+    (model ${KISYS3DMOD}/OptoDevice.3dshapes/OnSemi_CASE100CY.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical (layer F.Cu) (tedit 5AE5139B) (tstamp 5F382218)
+    (at 128.4 93.53)
+    (descr "Resistor, Axial_DIN0204 series, Axial, Vertical, pin pitch=1.9mm, 0.167W, length*diameter=3.6*1.6mm^2, http://cdn-reichelt.de/documents/datenblatt/B400/1_4W%23YAG.pdf")
+    (tags "Resistor Axial_DIN0204 series Axial Vertical pin pitch 1.9mm 0.167W length 3.6mm diameter 1.6mm")
+    (path /5F3851E4)
+    (fp_text reference R4 (at 0.95 -1.92) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value 10k (at 0.95 1.92) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0.95 -1.92) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_arc (start 0 0) (end 0.417133 -0.7) (angle -233.92106) (layer F.SilkS) (width 0.12))
+    (fp_circle (center 0 0) (end 0.8 0) (layer F.Fab) (width 0.1))
+    (fp_line (start 0 0) (end 1.9 0) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.05 -1.05) (end -1.05 1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -1.05 1.05) (end 2.86 1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 2.86 1.05) (end 2.86 -1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 2.86 -1.05) (end -1.05 -1.05) (layer F.CrtYd) (width 0.05))
+    (pad 2 thru_hole oval (at 1.9 0) (size 1.4 1.4) (drill 0.7) (layers *.Cu *.Mask)
+      (net 1 /sense2))
+    (pad 1 thru_hole circle (at 0 0) (size 1.4 1.4) (drill 0.7) (layers *.Cu *.Mask)
+      (net 12 "Net-(Q4-Pad3)"))
+    (model ${KISYS3DMOD}/Resistor_THT.3dshapes/R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical (layer F.Cu) (tedit 5AE5139B) (tstamp 5F38220A)
+    (at 120.14 100.74)
+    (descr "Resistor, Axial_DIN0204 series, Axial, Vertical, pin pitch=1.9mm, 0.167W, length*diameter=3.6*1.6mm^2, http://cdn-reichelt.de/documents/datenblatt/B400/1_4W%23YAG.pdf")
+    (tags "Resistor Axial_DIN0204 series Axial Vertical pin pitch 1.9mm 0.167W length 3.6mm diameter 1.6mm")
+    (path /5F38475D)
+    (fp_text reference R3 (at 0.95 -1.92) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value 330 (at 0.95 1.92) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0.95 -1.92) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_arc (start 0 0) (end 0.417133 -0.7) (angle -233.92106) (layer F.SilkS) (width 0.12))
+    (fp_circle (center 0 0) (end 0.8 0) (layer F.Fab) (width 0.1))
+    (fp_line (start 0 0) (end 1.9 0) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.05 -1.05) (end -1.05 1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -1.05 1.05) (end 2.86 1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 2.86 1.05) (end 2.86 -1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 2.86 -1.05) (end -1.05 -1.05) (layer F.CrtYd) (width 0.05))
+    (pad 2 thru_hole oval (at 1.9 0) (size 1.4 1.4) (drill 0.7) (layers *.Cu *.Mask)
+      (net 14 "Net-(R3-Pad2)"))
+    (pad 1 thru_hole circle (at 0 0) (size 1.4 1.4) (drill 0.7) (layers *.Cu *.Mask)
+      (net 12 "Net-(Q4-Pad3)"))
+    (model ${KISYS3DMOD}/Resistor_THT.3dshapes/R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical (layer F.Cu) (tedit 5AE5139B) (tstamp 5F3821FC)
+    (at 128.4 90.38)
+    (descr "Resistor, Axial_DIN0204 series, Axial, Vertical, pin pitch=1.9mm, 0.167W, length*diameter=3.6*1.6mm^2, http://cdn-reichelt.de/documents/datenblatt/B400/1_4W%23YAG.pdf")
+    (tags "Resistor Axial_DIN0204 series Axial Vertical pin pitch 1.9mm 0.167W length 3.6mm diameter 1.6mm")
+    (path /5F384DD2)
+    (fp_text reference R2 (at 0.95 -1.92) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value 10k (at 0.95 1.92) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0.95 -1.92) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_arc (start 0 0) (end 0.417133 -0.7) (angle -233.92106) (layer F.SilkS) (width 0.12))
+    (fp_circle (center 0 0) (end 0.8 0) (layer F.Fab) (width 0.1))
+    (fp_line (start 0 0) (end 1.9 0) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.05 -1.05) (end -1.05 1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -1.05 1.05) (end 2.86 1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 2.86 1.05) (end 2.86 -1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 2.86 -1.05) (end -1.05 -1.05) (layer F.CrtYd) (width 0.05))
+    (pad 2 thru_hole oval (at 1.9 0) (size 1.4 1.4) (drill 0.7) (layers *.Cu *.Mask)
+      (net 2 /sense1))
+    (pad 1 thru_hole circle (at 0 0) (size 1.4 1.4) (drill 0.7) (layers *.Cu *.Mask)
+      (net 10 "Net-(Q3-Pad3)"))
+    (model ${KISYS3DMOD}/Resistor_THT.3dshapes/R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical (layer F.Cu) (tedit 5AE5139B) (tstamp 5F3821EE)
+    (at 123.65 97.59)
+    (descr "Resistor, Axial_DIN0204 series, Axial, Vertical, pin pitch=1.9mm, 0.167W, length*diameter=3.6*1.6mm^2, http://cdn-reichelt.de/documents/datenblatt/B400/1_4W%23YAG.pdf")
+    (tags "Resistor Axial_DIN0204 series Axial Vertical pin pitch 1.9mm 0.167W length 3.6mm diameter 1.6mm")
+    (path /5F383F48)
+    (fp_text reference R1 (at 0.95 -1.92) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value 330 (at 0.95 1.92) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0.95 -1.92) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_arc (start 0 0) (end 0.417133 -0.7) (angle -233.92106) (layer F.SilkS) (width 0.12))
+    (fp_circle (center 0 0) (end 0.8 0) (layer F.Fab) (width 0.1))
+    (fp_line (start 0 0) (end 1.9 0) (layer F.Fab) (width 0.1))
+    (fp_line (start -1.05 -1.05) (end -1.05 1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -1.05 1.05) (end 2.86 1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 2.86 1.05) (end 2.86 -1.05) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 2.86 -1.05) (end -1.05 -1.05) (layer F.CrtYd) (width 0.05))
+    (pad 2 thru_hole oval (at 1.9 0) (size 1.4 1.4) (drill 0.7) (layers *.Cu *.Mask)
+      (net 13 "Net-(R1-Pad2)"))
+    (pad 1 thru_hole circle (at 0 0) (size 1.4 1.4) (drill 0.7) (layers *.Cu *.Mask)
+      (net 10 "Net-(Q3-Pad3)"))
+    (model ${KISYS3DMOD}/Resistor_THT.3dshapes/R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Package_TO_SOT_THT:TO-247-3_Vertical (layer F.Cu) (tedit 5AC86DC3) (tstamp 5F3821E0)
+    (at 94.89 97.89)
+    (descr "TO-247-3, Vertical, RM 5.45mm, see https://toshiba.semicon-storage.com/us/product/mosfet/to-247-4l.html")
+    (tags "TO-247-3 Vertical RM 5.45mm")
+    (path /5F3AB055)
+    (fp_text reference Q4 (at 5.45 -3.45) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value Q_NPN_BCE (at 5.45 3.95) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 5.45 -3.45) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_line (start -2.5 -2.33) (end -2.5 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start -2.5 2.7) (end 13.4 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start 13.4 2.7) (end 13.4 -2.33) (layer F.Fab) (width 0.1))
+    (fp_line (start 13.4 -2.33) (end -2.5 -2.33) (layer F.Fab) (width 0.1))
+    (fp_line (start 3.645 -2.33) (end 3.645 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start 7.255 -2.33) (end 7.255 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start -2.62 -2.451) (end 13.52 -2.451) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.62 2.82) (end 13.52 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.62 -2.451) (end -2.62 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 13.52 -2.451) (end 13.52 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 3.646 -2.451) (end 3.646 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 7.255 -2.451) (end 7.255 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.75 -2.59) (end -2.75 2.95) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -2.75 2.95) (end 13.65 2.95) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 13.65 2.95) (end 13.65 -2.59) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 13.65 -2.59) (end -2.75 -2.59) (layer F.CrtYd) (width 0.05))
+    (pad 3 thru_hole oval (at 10.9 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 12 "Net-(Q4-Pad3)"))
+    (pad 2 thru_hole oval (at 5.45 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 11 +5V))
+    (pad 1 thru_hole rect (at 0 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 5 /col2))
+    (model ${KISYS3DMOD}/Package_TO_SOT_THT.3dshapes/TO-247-3_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Package_TO_SOT_THT:TO-247-3_Vertical (layer F.Cu) (tedit 5AC86DC3) (tstamp 5F3821C8)
+    (at 112.34 84.71)
+    (descr "TO-247-3, Vertical, RM 5.45mm, see https://toshiba.semicon-storage.com/us/product/mosfet/to-247-4l.html")
+    (tags "TO-247-3 Vertical RM 5.45mm")
+    (path /5F3AA8C7)
+    (fp_text reference Q3 (at 5.45 -3.45) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value Q_NPN_BCE (at 5.45 3.95) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 5.45 -3.45) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_line (start -2.5 -2.33) (end -2.5 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start -2.5 2.7) (end 13.4 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start 13.4 2.7) (end 13.4 -2.33) (layer F.Fab) (width 0.1))
+    (fp_line (start 13.4 -2.33) (end -2.5 -2.33) (layer F.Fab) (width 0.1))
+    (fp_line (start 3.645 -2.33) (end 3.645 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start 7.255 -2.33) (end 7.255 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start -2.62 -2.451) (end 13.52 -2.451) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.62 2.82) (end 13.52 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.62 -2.451) (end -2.62 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 13.52 -2.451) (end 13.52 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 3.646 -2.451) (end 3.646 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 7.255 -2.451) (end 7.255 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.75 -2.59) (end -2.75 2.95) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -2.75 2.95) (end 13.65 2.95) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 13.65 2.95) (end 13.65 -2.59) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 13.65 -2.59) (end -2.75 -2.59) (layer F.CrtYd) (width 0.05))
+    (pad 3 thru_hole oval (at 10.9 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 10 "Net-(Q3-Pad3)"))
+    (pad 2 thru_hole oval (at 5.45 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 11 +5V))
+    (pad 1 thru_hole rect (at 0 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 6 /col1))
+    (model ${KISYS3DMOD}/Package_TO_SOT_THT.3dshapes/TO-247-3_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Package_TO_SOT_THT:TO-247-3_Vertical (layer F.Cu) (tedit 5AC86DC3) (tstamp 5F3821B0)
+    (at 94.89 91.3)
+    (descr "TO-247-3, Vertical, RM 5.45mm, see https://toshiba.semicon-storage.com/us/product/mosfet/to-247-4l.html")
+    (tags "TO-247-3 Vertical RM 5.45mm")
+    (path /5F3AC2D4)
+    (fp_text reference Q2 (at 5.45 -3.45) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value Q_NPN_BCE (at 5.45 3.95) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 5.45 -3.45) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_line (start -2.5 -2.33) (end -2.5 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start -2.5 2.7) (end 13.4 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start 13.4 2.7) (end 13.4 -2.33) (layer F.Fab) (width 0.1))
+    (fp_line (start 13.4 -2.33) (end -2.5 -2.33) (layer F.Fab) (width 0.1))
+    (fp_line (start 3.645 -2.33) (end 3.645 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start 7.255 -2.33) (end 7.255 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start -2.62 -2.451) (end 13.52 -2.451) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.62 2.82) (end 13.52 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.62 -2.451) (end -2.62 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 13.52 -2.451) (end 13.52 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 3.646 -2.451) (end 3.646 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 7.255 -2.451) (end 7.255 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.75 -2.59) (end -2.75 2.95) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -2.75 2.95) (end 13.65 2.95) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 13.65 2.95) (end 13.65 -2.59) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 13.65 -2.59) (end -2.75 -2.59) (layer F.CrtYd) (width 0.05))
+    (pad 3 thru_hole oval (at 10.9 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 7 GND))
+    (pad 2 thru_hole oval (at 5.45 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 9 "Net-(Q2-Pad2)"))
+    (pad 1 thru_hole rect (at 0 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 3 /row2))
+    (model ${KISYS3DMOD}/Package_TO_SOT_THT.3dshapes/TO-247-3_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Package_TO_SOT_THT:TO-247-3_Vertical (layer F.Cu) (tedit 5AC86DC3) (tstamp 5F382198)
+    (at 94.89 84.71)
+    (descr "TO-247-3, Vertical, RM 5.45mm, see https://toshiba.semicon-storage.com/us/product/mosfet/to-247-4l.html")
+    (tags "TO-247-3 Vertical RM 5.45mm")
+    (path /5F3ABC32)
+    (fp_text reference Q1 (at 5.45 -3.45) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value Q_NPN_BCE (at 5.45 3.95) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 5.45 -3.45) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_line (start -2.5 -2.33) (end -2.5 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start -2.5 2.7) (end 13.4 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start 13.4 2.7) (end 13.4 -2.33) (layer F.Fab) (width 0.1))
+    (fp_line (start 13.4 -2.33) (end -2.5 -2.33) (layer F.Fab) (width 0.1))
+    (fp_line (start 3.645 -2.33) (end 3.645 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start 7.255 -2.33) (end 7.255 2.7) (layer F.Fab) (width 0.1))
+    (fp_line (start -2.62 -2.451) (end 13.52 -2.451) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.62 2.82) (end 13.52 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.62 -2.451) (end -2.62 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 13.52 -2.451) (end 13.52 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 3.646 -2.451) (end 3.646 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start 7.255 -2.451) (end 7.255 2.82) (layer F.SilkS) (width 0.12))
+    (fp_line (start -2.75 -2.59) (end -2.75 2.95) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -2.75 2.95) (end 13.65 2.95) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 13.65 2.95) (end 13.65 -2.59) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 13.65 -2.59) (end -2.75 -2.59) (layer F.CrtYd) (width 0.05))
+    (pad 3 thru_hole oval (at 10.9 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 7 GND))
+    (pad 2 thru_hole oval (at 5.45 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 8 "Net-(Q1-Pad2)"))
+    (pad 1 thru_hole rect (at 0 0) (size 2.5 4.5) (drill 1.5) (layers *.Cu *.Mask)
+      (net 4 /row1))
+    (model ${KISYS3DMOD}/Package_TO_SOT_THT.3dshapes/TO-247-3_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+  (module Connector_Molex:Molex_CLIK-Mate_502382-0670_1x06-1MP_P1.25mm_Vertical (layer F.Cu) (tedit 5B78AD89) (tstamp 5F382180)
+    (at 115.57 92.71)
+    (descr "Molex CLIK-Mate series connector, 502382-0670 (http://www.molex.com/pdm_docs/sd/5023820270_sd.pdf), generated with kicad-footprint-generator")
+    (tags "connector Molex CLIK-Mate side entry")
+    (path /5F3A336D)
+    (attr smd)
+    (fp_text reference J1 (at 0 -4.7) (layer F.SilkS)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text value Conn_01x06_Male (at 0 4) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_text user %R (at 0 -0.77) (layer F.Fab)
+      (effects (font (size 1 1) (thickness 0.15)))
+    )
+    (fp_line (start -5.425 1.95) (end 5.425 1.95) (layer F.Fab) (width 0.1))
+    (fp_line (start -5.535 0.26) (end -5.535 2.06) (layer F.SilkS) (width 0.12))
+    (fp_line (start -5.535 2.06) (end -3.685 2.06) (layer F.SilkS) (width 0.12))
+    (fp_line (start -3.685 2.06) (end -3.685 2.8) (layer F.SilkS) (width 0.12))
+    (fp_line (start 5.535 0.26) (end 5.535 2.06) (layer F.SilkS) (width 0.12))
+    (fp_line (start 5.535 2.06) (end 3.685 2.06) (layer F.SilkS) (width 0.12))
+    (fp_line (start -5.535 -3.06) (end -5.535 -3.61) (layer F.SilkS) (width 0.12))
+    (fp_line (start -5.535 -3.61) (end 5.535 -3.61) (layer F.SilkS) (width 0.12))
+    (fp_line (start 5.535 -3.61) (end 5.535 -3.06) (layer F.SilkS) (width 0.12))
+    (fp_line (start -5.425 -3.5) (end 5.425 -3.5) (layer F.Fab) (width 0.1))
+    (fp_line (start -5.425 1.95) (end -5.425 -3.5) (layer F.Fab) (width 0.1))
+    (fp_line (start 5.425 1.95) (end 5.425 -3.5) (layer F.Fab) (width 0.1))
+    (fp_line (start -5.98 -4) (end -5.98 3.3) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -5.98 3.3) (end 5.98 3.3) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 5.98 3.3) (end 5.98 -4) (layer F.CrtYd) (width 0.05))
+    (fp_line (start 5.98 -4) (end -5.98 -4) (layer F.CrtYd) (width 0.05))
+    (fp_line (start -3.625 1.95) (end -3.125 1.242893) (layer F.Fab) (width 0.1))
+    (fp_line (start -3.125 1.242893) (end -2.625 1.95) (layer F.Fab) (width 0.1))
+    (pad MP smd roundrect (at 4.975 -1.4) (size 1 2.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
+    (pad MP smd roundrect (at -4.975 -1.4) (size 1 2.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
+    (pad 6 smd roundrect (at 3.125 1.95) (size 0.6 1.7) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 1 /sense2))
+    (pad 5 smd roundrect (at 1.875 1.95) (size 0.6 1.7) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 2 /sense1))
+    (pad 4 smd roundrect (at 0.625 1.95) (size 0.6 1.7) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 3 /row2))
+    (pad 3 smd roundrect (at -0.625 1.95) (size 0.6 1.7) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 4 /row1))
+    (pad 2 smd roundrect (at -1.875 1.95) (size 0.6 1.7) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 5 /col2))
+    (pad 1 smd roundrect (at -3.125 1.95) (size 0.6 1.7) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25)
+      (net 6 /col1))
+    (model ${KISYS3DMOD}/Connector_Molex.3dshapes/Molex_CLIK-Mate_502382-0670_1x06-1MP_P1.25mm_Vertical.wrl
+      (at (xyz 0 0 0))
+      (scale (xyz 1 1 1))
+      (rotate (xyz 0 0 0))
+    )
+  )
+
+)
diff --git a/lego-piano.pro b/lego-piano.pro
new file mode 100644
index 0000000..6658f28
--- /dev/null
+++ b/lego-piano.pro
@@ -0,0 +1,248 @@
+update=Sat 15 Aug 2020 12:40:14 PM BST
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
+[pcbnew]
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diff --git a/lego-piano.sch b/lego-piano.sch
new file mode 100644
index 0000000..9cde0c5
--- /dev/null
+++ b/lego-piano.sch
@@ -0,0 +1,348 @@
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