Create a schematic for GPIO expansion header. 

libSymbols:
- Connector_Generic:Conn_01x04
- Pi-Port:Pi-Port
schematicSymbols:
- libraryNickname: Connector_Generic
  entryName: Conn_01x04
  position:
    x: 236.22
    y: 107.95
    angle: 0
  properties:
  - key: Reference
    value: J3
    position:
      x: 238.76
      y: 107.9499
      angle: 0
  - key: Value
    value: SER EN
    position:
      x: 238.76
      y: 110.4899
      angle: 0
- libraryNickname: Connector_Generic
  entryName: Conn_01x04
  position:
    x: 177.8
    y: 102.87
    angle: 0
  properties:
  - key: Reference
    value: J2
    position:
      x: 177.8
      y: 93.98
      angle: 0
  - key: Value
    value: I2C EN
    position:
      x: 177.8
      y: 96.52
      angle: 0
- libraryNickname: Pi-Port
  entryName: Pi-Port
  position:
    x: 207.01
    y: 123.19
    angle: 0
  properties:
  - key: Reference
    value: J1
    position:
      x: 208.28
      y: 86.36
      angle: 0
  - key: Value
    value: Pi-Port
    position:
      x: 208.28
      y: 88.9
      angle: 0
junctions: []
noConnects:
- position:
    x: 214.63
    y: 128.27
    angle: null
- position:
    x: 201.93
    y: 91.44
    angle: null
- position:
    x: 201.93
    y: 115.57
    angle: null
- position:
    x: 201.93
    y: 133.35
    angle: null
- position:
    x: 201.93
    y: 113.03
    angle: null
- position:
    x: 214.63
    y: 91.44
    angle: null
- position:
    x: 201.93
    y: 118.11
    angle: null
- position:
    x: 214.63
    y: 120.65
    angle: null
- position:
    x: 214.63
    y: 154.94
    angle: null
- position:
    x: 214.63
    y: 113.03
    angle: null
- position:
    x: 214.63
    y: 143.51
    angle: null
- position:
    x: 214.63
    y: 133.35
    angle: null
- position:
    x: 201.93
    y: 125.73
    angle: null
- position:
    x: 201.93
    y: 107.95
    angle: null
- position:
    x: 214.63
    y: 148.59
    angle: null
- position:
    x: 201.93
    y: 123.19
    angle: null
- position:
    x: 201.93
    y: 135.89
    angle: null
- position:
    x: 201.93
    y: 140.97
    angle: null
- position:
    x: 214.63
    y: 130.81
    angle: null
- position:
    x: 201.93
    y: 128.27
    angle: null
- position:
    x: 214.63
    y: 138.43
    angle: null
- position:
    x: 214.63
    y: 118.11
    angle: null
- position:
    x: 201.93
    y: 120.65
    angle: null
- position:
    x: 201.93
    y: 154.94
    angle: null
- position:
    x: 214.63
    y: 146.05
    angle: null
- position:
    x: 201.93
    y: 138.43
    angle: null
- position:
    x: 201.93
    y: 143.51
    angle: null
- position:
    x: 201.93
    y: 146.05
    angle: null
- position:
    x: 201.93
    y: 100.33
    angle: null
- position:
    x: 214.63
    y: 125.73
    angle: null
busEntries: []
graphicalItems:
- type: wire
  points:
  - x: 182.88
    y: 102.87
  - x: 201.93
    y: 102.87
- type: wire
  points:
  - x: 214.63
    y: 107.95
  - x: 231.14
    y: 107.95
- type: wire
  points:
  - x: 214.63
    y: 110.49
  - x: 231.14
    y: 110.49
- type: wire
  points:
  - x: 182.88
    y: 105.41
  - x: 201.93
    y: 105.41
globalLabels:
- text: I2C_SCL
  shape: bidirectional
  position:
    x: 182.88
    y: 107.95
    angle: 0
- text: RX-3.3
  shape: input
  position:
    x: 231.14
    y: 113.03
    angle: 180
- text: TX-3.3
  shape: output
  position:
    x: 231.14
    y: 105.41
    angle: 180
- text: GND
  shape: input
  position:
    x: 214.63
    y: 123.19
    angle: 0
- text: GND
  shape: input
  position:
    x: 214.63
    y: 135.89
    angle: 0
- text: GND
  shape: input
  position:
    x: 201.93
    y: 148.59
    angle: 180
- text: GND
  shape: input
  position:
    x: 214.63
    y: 115.57
    angle: 0
- text: VCC
  shape: input
  position:
    x: 214.63
    y: 102.87
    angle: 0
- text: VCC
  shape: input
  position:
    x: 214.63
    y: 100.33
    angle: 0
- text: GND
  shape: input
  position:
    x: 201.93
    y: 110.49
    angle: 180
- text: GND
  shape: input
  position:
    x: 214.63
    y: 140.97
    angle: 0
- text: GND
  shape: input
  position:
    x: 214.63
    y: 105.41
    angle: 0
- text: GND
  shape: input
  position:
    x: 201.93
    y: 130.81
    angle: 180
- text: I2C_SDA
  shape: input
  position:
    x: 182.88
    y: 100.33
    angle: 0
sheetInstances: []
