Create a schematic for Ground reference connection. 

libSymbols:
- Connector:Conn_01x03_Male
- power:GNDREF
schematicSymbols:
- libraryNickname: Connector
  entryName: Conn_01x03_Male
  position:
    x: 135.89
    y: 113.03
    angle: 0
  properties:
  - key: Reference
    value: J_EXT1
    position:
      x: 134.62
      y: 111.7599
      angle: 0
  - key: Value
    value: Conn_01x03_Male
    position:
      x: 134.62
      y: 114.2999
      angle: 0
- libraryNickname: power
  entryName: GNDREF
  position:
    x: 160.02
    y: 116.84
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0135'
    position:
      x: 160.02
      y: 123.19
      angle: 0
  - key: Value
    value: GNDREF
    position:
      x: 160.02
      y: 121.92
      angle: 0
junctions: []
noConnects: []
busEntries: []
graphicalItems:
- type: wire
  points:
  - x: 140.97
    y: 113.03
  - x: 143.51
    y: 113.03
- type: wire
  points:
  - x: 160.02
    y: 115.57
  - x: 160.02
    y: 116.84
- type: wire
  points:
  - x: 140.97
    y: 115.57
  - x: 160.02
    y: 115.57
- type: wire
  points:
  - x: 140.97
    y: 110.49
  - x: 143.51
    y: 110.49
globalLabels: []
sheetInstances: []
