options:
  parameters:
    author: ''
    category: '[GRC Hier Blocks]'
    cmake_opt: ''
    comment: ''
    copyright: ''
    description: ''
    gen_cmake: 'On'
    gen_linking: dynamic
    generate_options: qt_gui
    hier_block_src_path: '.:'
    id: scope
    max_nouts: '0'
    output_language: python
    placement: (0,0)
    qt_qss_theme: ''
    realtime_scheduling: ''
    run: 'True'
    run_command: '{python} -u {filename}'
    run_options: prompt
    sizing_mode: fixed
    thread_safe_setters: ''
    title: Arduino Voltmeter / Oscilloscope
    window_size: ''
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [20, 20]
    rotation: 0
    state: enabled

blocks:
- name: input_voltage_max
  id: variable
  parameters:
    comment: ''
    value: reference_voltage * resistor_in_ohm / resistor_ground_ohm + reference_voltage
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1491, 193]
    rotation: 0
    state: true
- name: input_voltage_min
  id: variable
  parameters:
    comment: ''
    value: -1 * reference_voltage * resistor_in_ohm / resistor_ref_ohm
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1494, 94]
    rotation: 0
    state: true
- name: reference_voltage
  id: variable
  parameters:
    comment: ''
    value: '4.11'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [457, 222]
    rotation: 0
    state: true
- name: resistor_ground_ohm
  id: variable
  parameters:
    comment: ''
    value: 10e3
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [892, 124]
    rotation: 0
    state: true
- name: resistor_in_ohm
  id: variable
  parameters:
    comment: ''
    value: 100e3
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [926, 26]
    rotation: 0
    state: true
- name: resistor_ref_ohm
  id: variable
  parameters:
    comment: ''
    value: 10e3
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [925, 222]
    rotation: 0
    state: true
- name: sample_rate_hz
  id: variable
  parameters:
    comment: ''
    value: '1044.4'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [58, 173]
    rotation: 0
    state: enabled
- name: blocks_add_const_vxx_0
  id: blocks_add_const_vxx
  parameters:
    affinity: ''
    alias: ''
    comment: '- V_ref * R_in / R_ref'
    const: input_voltage_min
    maxoutbuf: '0'
    minoutbuf: '0'
    type: float
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1116, 324]
    rotation: 0
    state: enabled
- name: blocks_message_debug_0
  id: blocks_message_debug
  parameters:
    affinity: ''
    alias: ''
    comment: ''
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [991, 817]
    rotation: 0
    state: true
- name: blocks_multiply_const_vxx_0
  id: blocks_multiply_const_vxx
  parameters:
    affinity: ''
    alias: ''
    comment: (1 + R_in / R_gnd + R_in / R_ref)
    const: '1 + resistor_in_ohm / resistor_ground_ohm + resistor_in_ohm / resistor_ref_ohm '
    maxoutbuf: '0'
    minoutbuf: '0'
    type: float
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [816, 324]
    rotation: 0
    state: enabled
- name: blocks_probe_rate_0
  id: blocks_probe_rate
  parameters:
    affinity: ''
    alias: ''
    alpha: '0.15'
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    mintime: '10000.0'
    type: short
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [391, 781]
    rotation: 0
    state: true
- name: blocks_short_to_float_0
  id: blocks_short_to_float
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    scale: 1024 / reference_voltage
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [483, 324]
    rotation: 0
    state: true
- name: qtgui_freq_sink_x_0
  id: qtgui_freq_sink_x
  parameters:
    affinity: ''
    alias: ''
    alpha1: '1.0'
    alpha10: '1.0'
    alpha2: '1.0'
    alpha3: '1.0'
    alpha4: '1.0'
    alpha5: '1.0'
    alpha6: '1.0'
    alpha7: '1.0'
    alpha8: '1.0'
    alpha9: '1.0'
    autoscale: 'False'
    average: '1.0'
    axislabels: 'True'
    bw: sample_rate_hz
    color1: '"blue"'
    color10: '"dark blue"'
    color2: '"red"'
    color3: '"green"'
    color4: '"black"'
    color5: '"cyan"'
    color6: '"magenta"'
    color7: '"yellow"'
    color8: '"dark red"'
    color9: '"dark green"'
    comment: ''
    ctrlpanel: 'False'
    fc: '0'
    fftsize: '1024'
    freqhalf: 'False'
    grid: 'False'
    gui_hint: ''
    label: Relative Gain
    label1: ''
    label10: ''''''
    label2: ''''''
    label3: ''''''
    label4: ''''''
    label5: ''''''
    label6: ''''''
    label7: ''''''
    label8: ''''''
    label9: ''''''
    legend: 'False'
    maxoutbuf: '0'
    minoutbuf: '0'
    name: '""'
    nconnections: '1'
    showports: 'False'
    tr_chan: '0'
    tr_level: '0.0'
    tr_mode: qtgui.TRIG_MODE_FREE
    tr_tag: '""'
    type: float
    units: dB
    update_time: '0.10'
    width1: '2'
    width10: '1'
    width2: '1'
    width3: '1'
    width4: '1'
    width5: '1'
    width6: '1'
    width7: '1'
    width8: '1'
    width9: '1'
    wintype: firdes.WIN_BLACKMAN_hARRIS
    ymax: '0'
    ymin: '-100'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [897, 459]
    rotation: 0
    state: enabled
- name: qtgui_number_sink_0
  id: qtgui_number_sink
  parameters:
    affinity: ''
    alias: ''
    autoscale: 'False'
    avg: '0'
    color1: ("black", "black")
    color10: ("black", "black")
    color2: ("black", "black")
    color3: ("black", "black")
    color4: ("black", "black")
    color5: ("black", "black")
    color6: ("black", "black")
    color7: ("black", "black")
    color8: ("black", "black")
    color9: ("black", "black")
    comment: ''
    factor1: '1'
    factor10: '1'
    factor2: '1'
    factor3: '1'
    factor4: '1'
    factor5: '1'
    factor6: '1'
    factor7: '1'
    factor8: '1'
    factor9: '1'
    graph_type: qtgui.NUM_GRAPH_HORIZ
    gui_hint: ''
    label1: Voltage
    label10: ''
    label2: ''
    label3: ''
    label4: ''
    label5: ''
    label6: ''
    label7: ''
    label8: ''
    label9: ''
    max: input_voltage_max
    min: input_voltage_min
    name: '""'
    nconnections: '1'
    type: float
    unit1: V
    unit10: ''
    unit2: ''
    unit3: ''
    unit4: ''
    unit5: ''
    unit6: ''
    unit7: ''
    unit8: ''
    unit9: ''
    update_time: '0.10'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1490, 428]
    rotation: 0
    state: enabled
- name: qtgui_number_sink_0_0
  id: qtgui_number_sink
  parameters:
    affinity: ''
    alias: ''
    autoscale: 'False'
    avg: '0'
    color1: ("black", "black")
    color10: ("black", "black")
    color2: ("black", "black")
    color3: ("black", "black")
    color4: ("black", "black")
    color5: ("black", "black")
    color6: ("black", "black")
    color7: ("black", "black")
    color8: ("black", "black")
    color9: ("black", "black")
    comment: ''
    factor1: '1'
    factor10: '1'
    factor2: '1'
    factor3: '1'
    factor4: '1'
    factor5: '1'
    factor6: '1'
    factor7: '1'
    factor8: '1'
    factor9: '1'
    graph_type: qtgui.NUM_GRAPH_HORIZ
    gui_hint: ''
    label1: ''
    label10: ''
    label2: ''
    label3: ''
    label4: ''
    label5: ''
    label6: ''
    label7: ''
    label8: ''
    label9: ''
    max: '1024'
    min: '0'
    name: '"Arduino Reading"'
    nconnections: '1'
    type: short
    unit1: ''
    unit10: ''
    unit2: ''
    unit3: ''
    unit4: ''
    unit5: ''
    unit6: ''
    unit7: ''
    unit8: ''
    unit9: ''
    update_time: '0.10'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [452, 499]
    rotation: 0
    state: disabled
- name: qtgui_time_sink_x_0
  id: qtgui_time_sink_x
  parameters:
    affinity: ''
    alias: ''
    alpha1: '1.0'
    alpha10: '1.0'
    alpha2: '1.0'
    alpha3: '1.0'
    alpha4: '1.0'
    alpha5: '1.0'
    alpha6: '1.0'
    alpha7: '1.0'
    alpha8: '1.0'
    alpha9: '1.0'
    autoscale: 'False'
    axislabels: 'True'
    color1: blue
    color10: dark blue
    color2: red
    color3: green
    color4: black
    color5: cyan
    color6: magenta
    color7: yellow
    color8: dark red
    color9: dark green
    comment: ''
    ctrlpanel: 'False'
    entags: 'True'
    grid: 'False'
    gui_hint: ''
    label1: Signal 1
    label10: Signal 10
    label2: Signal 2
    label3: Signal 3
    label4: Signal 4
    label5: Signal 5
    label6: Signal 6
    label7: Signal 7
    label8: Signal 8
    label9: Signal 9
    legend: 'False'
    marker1: '-1'
    marker10: '-1'
    marker2: '-1'
    marker3: '-1'
    marker4: '-1'
    marker5: '-1'
    marker6: '-1'
    marker7: '-1'
    marker8: '-1'
    marker9: '-1'
    name: '""'
    nconnections: '1'
    size: int(sample_rate_hz*2)
    srate: sample_rate_hz
    stemplot: 'False'
    style1: '1'
    style10: '1'
    style2: '1'
    style3: '1'
    style4: '1'
    style5: '1'
    style6: '1'
    style7: '1'
    style8: '1'
    style9: '1'
    tr_chan: '0'
    tr_delay: '0'
    tr_level: '0.0'
    tr_mode: qtgui.TRIG_MODE_FREE
    tr_slope: qtgui.TRIG_SLOPE_POS
    tr_tag: '""'
    type: float
    update_time: '0.10'
    width1: '2'
    width10: '1'
    width2: '1'
    width3: '1'
    width4: '1'
    width5: '1'
    width6: '1'
    width7: '1'
    width8: '1'
    width9: '1'
    ylabel: Voltage
    ymax: input_voltage_max
    ymin: input_voltage_min
    yunit: '"V"'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1462, 292]
    rotation: 0
    state: enabled
- name: qtgui_time_sink_x_0_0
  id: qtgui_time_sink_x
  parameters:
    affinity: ''
    alias: ''
    alpha1: '1.0'
    alpha10: '1.0'
    alpha2: '1.0'
    alpha3: '1.0'
    alpha4: '1.0'
    alpha5: '1.0'
    alpha6: '1.0'
    alpha7: '1.0'
    alpha8: '1.0'
    alpha9: '1.0'
    autoscale: 'False'
    axislabels: 'True'
    color1: blue
    color10: dark blue
    color2: red
    color3: green
    color4: black
    color5: cyan
    color6: magenta
    color7: yellow
    color8: dark red
    color9: dark green
    comment: ''
    ctrlpanel: 'False'
    entags: 'True'
    grid: 'False'
    gui_hint: ''
    label1: Signal 1
    label10: Signal 10
    label2: Signal 2
    label3: Signal 3
    label4: Signal 4
    label5: Signal 5
    label6: Signal 6
    label7: Signal 7
    label8: Signal 8
    label9: Signal 9
    legend: 'False'
    marker1: '-1'
    marker10: '-1'
    marker2: '-1'
    marker3: '-1'
    marker4: '-1'
    marker5: '-1'
    marker6: '-1'
    marker7: '-1'
    marker8: '-1'
    marker9: '-1'
    name: '""'
    nconnections: '1'
    size: int(sample_rate_hz*2)
    srate: sample_rate_hz
    stemplot: 'False'
    style1: '1'
    style10: '1'
    style2: '1'
    style3: '1'
    style4: '1'
    style5: '1'
    style6: '1'
    style7: '1'
    style8: '1'
    style9: '1'
    tr_chan: '0'
    tr_delay: '0'
    tr_level: '0.0'
    tr_mode: qtgui.TRIG_MODE_FREE
    tr_slope: qtgui.TRIG_SLOPE_POS
    tr_tag: '""'
    type: float
    update_time: '0.10'
    width1: '2'
    width10: '1'
    width2: '1'
    width3: '1'
    width4: '1'
    width5: '1'
    width6: '1'
    width7: '1'
    width8: '1'
    width9: '1'
    ylabel: Arduino Input Voltage
    ymax: reference_voltage
    ymin: '0'
    yunit: '"V"'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [881, 627]
    rotation: 0
    state: disabled
- name: serial_source_block
  id: epy_block
  parameters:
    _source_code: "import gnuradio\nimport numpy\nimport serial\n\n\nclass SerialSourceBlock(gnuradio.gr.sync_block):\n\
      \    def __init__(\n        self, port=\"/dev/ttyUSB0\", baud_rate=115200, buffer_max_length=10,\
      \ timeout=2\n    ):\n        gnuradio.gr.sync_block.__init__(\n            self,\
      \ name=\"Serial Source Block\", in_sig=None, out_sig=[numpy.int16]\n   \
      \     )\n        self._serial_port = serial.Serial(\n            port=port,\
      \ baudrate=baud_rate, bytesize=serial.EIGHTBITS, timeout=timeout\n        )\n\
      \        self._buffer_max_length = buffer_max_length\n\n    def work(self, input_items,\
      \ output_items):\n        # pylint: disable=unused-argument\n        buffer\
      \ = self._serial_port.read(\n            2 * min(len(output_items[0]), self._buffer_max_length)\n\
      \        )\n        assert len(buffer) % 2 == 0\n        buffer_samples_count\
      \ = len(buffer) // 2\n        output_items[0][:buffer_samples_count] = numpy.frombuffer(buffer,\
      \ dtype=\">u2\")\n        assert output_items[0][:buffer_samples_count].max()\
      \ < 1024, \"lost sync?\"\n        return buffer_samples_count\n"
    affinity: ''
    alias: ''
    baud_rate: '115200'
    buffer_max_length: int(sample_rate_hz/4)
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    port: '''/dev/ttyUSB0'''
    timeout: '2'
  states:
    _io_cache: ('Serial Source Block', 'SerialSourceBlock', [('port', "'/dev/ttyUSB0'"),
      ('baud_rate', '115200'), ('buffer_max_length', '10'), ('timeout', '2')], [],
      [('0', 'short', 1)], '', [])
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [15, 276]
    rotation: 0
    state: true

connections:
- [blocks_add_const_vxx_0, '0', qtgui_number_sink_0, '0']
- [blocks_add_const_vxx_0, '0', qtgui_time_sink_x_0, '0']
- [blocks_multiply_const_vxx_0, '0', blocks_add_const_vxx_0, '0']
- [blocks_probe_rate_0, rate, blocks_message_debug_0, print]
- [blocks_short_to_float_0, '0', blocks_multiply_const_vxx_0, '0']
- [blocks_short_to_float_0, '0', qtgui_freq_sink_x_0, '0']
- [blocks_short_to_float_0, '0', qtgui_time_sink_x_0_0, '0']
- [serial_source_block, '0', blocks_probe_rate_0, '0']
- [serial_source_block, '0', blocks_short_to_float_0, '0']
- [serial_source_block, '0', qtgui_number_sink_0_0, '0']

metadata:
  file_format: 1