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: [9, 19]
    rotation: 0
    state: enabled

blocks:
- name: reference_voltage
  id: variable
  parameters:
    comment: ''
    value: '4.11'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [730, 64]
    rotation: 0
    state: true
- name: sample_rate_hz
  id: variable
  parameters:
    comment: ''
    value: 1e6 / 2500
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [437, 63]
    rotation: 0
    state: enabled
- 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: [409, 253]
    rotation: 0
    state: true
- name: epy_block_0
  id: epy_block
  parameters:
    _source_code: "import struct\nimport time\n\nimport gnuradio\nimport numpy\nimport\
      \ serial\n\n\nclass ArduinoAnalogReadings(gnuradio.gr.sync_block):\n    def\
      \ __init__(self, port=\"/dev/ttyUSB0\", baud_rate=115200, timeout=2):\n    \
      \    gnuradio.gr.sync_block.__init__(\n            self, name=\"Arduino Analog\
      \ Readings\", in_sig=[], out_sig=[numpy.int16]\n        )\n        self._serial_port\
      \ = serial.Serial(port, baud_rate, timeout=timeout)\n        self._readings_counter\
      \ = 0\n        self._start_timestamp = None\n\n    def work(self, input_items,\
      \ output_items):\n        # pylint: disable=unused-argument\n        if not\
      \ self._start_timestamp:\n            self._start_timestamp = time.time()\n\
      \        output_items[0][0] = struct.unpack(\">H\", self._serial_port.read(2))[0]\n\
      \        self._readings_counter += 1\n        if self._readings_counter % 1000\
      \ == 0:\n            print(self._readings_counter / (time.time() - self._start_timestamp),\
      \ \"Hz\")\n        return 1\n"
    affinity: ''
    alias: ''
    baud_rate: '115200'
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    port: '''/dev/ttyUSB0'''
    timeout: '2'
  states:
    _io_cache: ('Arduino Analog Readings', 'ArduinoAnalogReadings', [('port', "'/dev/ttyUSB0'"),
      ('baud_rate', '115200'), ('timeout', '2')], [], [('0', 'short', 1)], '', [])
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [22, 221]
    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: 'True'
    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: '10'
    ymin: '-140'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [768, 356]
    rotation: 0
    state: true
- 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: reference_voltage
    ymin: '0'
    yunit: '"V"'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [768, 221]
    rotation: 0
    state: true

connections:
- [blocks_short_to_float_0, '0', qtgui_freq_sink_x_0, '0']
- [blocks_short_to_float_0, '0', qtgui_time_sink_x_0, '0']
- [epy_block_0, '0', blocks_short_to_float_0, '0']

metadata:
  file_format: 1