Multiple analog inputs from teensy

[ktyssowski]

I'm trying to read multiple analog input signals from a teensy 4.1 running standard firmata into Bonsai (specifically, they are IR beam breaks attached to the teensy). when i start Bonsai, often only one is read, and then I have to restart to get two read in. It's random which one is read at first, so I don't think it's an issue with one pin or something like that. It's workable but annoying for reading in two inputs (I just have to restart until both are read in), but I am now trying to troubleshoot something with 4 analog inputs and it's been very difficult to get them all read in at once (same problem --some random subset is read in each time I start Bonsai).

Here's an example of a workflow I'm using with 2 inputs, reading from 2 different pins on the teensy:

[bruno-f-cruz]

Heya
Can you attach the current workflow?
thanks!

[ktyssowski]

I get this problem if I just do what I attached above x2 -so the same workflow 4 times with 4 separate analog inputs. (Also if I just use the workflow attached above).

I’d like to eventually do something more complicated, but I haven’t been able to put it together without solving this first.

[ktyssowski]

Sorry I think I misunderstood what you meant--here's the workflow I posted the screenshot of above!

<?xml version="1.0" encoding="utf-8"?>
<WorkflowBuilder Version="2.6.2"
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xmlns:ard="clr-namespace:Bonsai.Arduino;assembly=Bonsai.Arduino"
                 xmlns:rx="clr-namespace:Bonsai.Reactive;assembly=Bonsai.Core"
                 xmlns="https://bonsai-rx.org/2018/workflow">
  <Workflow>
    <Nodes>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="ard:AnalogInput">
          <ard:PortName>COM6</ard:PortName>
          <ard:Pin>0</ard:Pin>
        </Combinator>
      </Expression>
      <Expression xsi:type="LessThan">
        <Operand xsi:type="IntProperty">
          <Value>100</Value>
        </Operand>
      </Expression>
      <Expression xsi:type="GroupWorkflow">
        <Name>ConditionRight</Name>
        <Workflow>
          <Nodes>
            <Expression xsi:type="WorkflowInput">
              <Name>Source1</Name>
            </Expression>
            <Expression xsi:type="Combinator">
              <Combinator xsi:type="rx:DistinctUntilChanged" />
            </Expression>
            <Expression xsi:type="Condition">
              <Workflow>
                <Nodes>
                  <Expression xsi:type="WorkflowInput">
                    <Name>Source1</Name>
                  </Expression>
                  <Expression xsi:type="WorkflowOutput" />
                </Nodes>
                <Edges>
                  <Edge From="0" To="1" Label="Source1" />
                </Edges>
              </Workflow>
            </Expression>
            <Expression xsi:type="WorkflowOutput" />
          </Nodes>
          <Edges>
            <Edge From="0" To="1" Label="Source1" />
            <Edge From="1" To="2" Label="Source1" />
            <Edge From="2" To="3" Label="Source1" />
          </Edges>
        </Workflow>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="BooleanProperty">
          <Value>true</Value>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="ard:DigitalOutput">
          <ard:PortName>COM6</ard:PortName>
          <ard:Pin>2</ard:Pin>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="rx:Delay">
          <rx:DueTime>PT0.1S</rx:DueTime>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="BooleanProperty">
          <Value>false</Value>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="ard:DigitalOutput">
          <ard:PortName>COM6</ard:PortName>
          <ard:Pin>2</ard:Pin>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="rx:ElementIndex" />
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="ard:AnalogInput">
          <ard:PortName>COM6</ard:PortName>
          <ard:Pin>7</ard:Pin>
        </Combinator>
      </Expression>
      <Expression xsi:type="LessThan">
        <Operand xsi:type="IntProperty">
          <Value>100</Value>
        </Operand>
      </Expression>
      <Expression xsi:type="GroupWorkflow">
        <Name>ConditionLeft</Name>
        <Workflow>
          <Nodes>
            <Expression xsi:type="WorkflowInput">
              <Name>Source1</Name>
            </Expression>
            <Expression xsi:type="Combinator">
              <Combinator xsi:type="rx:DistinctUntilChanged" />
            </Expression>
            <Expression xsi:type="Condition">
              <Workflow>
                <Nodes>
                  <Expression xsi:type="WorkflowInput">
                    <Name>Source1</Name>
                  </Expression>
                  <Expression xsi:type="WorkflowOutput" />
                </Nodes>
                <Edges>
                  <Edge From="0" To="1" Label="Source1" />
                </Edges>
              </Workflow>
            </Expression>
            <Expression xsi:type="WorkflowOutput" />
          </Nodes>
          <Edges>
            <Edge From="0" To="1" Label="Source1" />
            <Edge From="1" To="2" Label="Source1" />
            <Edge From="2" To="3" Label="Source1" />
          </Edges>
        </Workflow>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="BooleanProperty">
          <Value>true</Value>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="ard:DigitalOutput">
          <ard:PortName>COM6</ard:PortName>
          <ard:Pin>5</ard:Pin>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="rx:Delay">
          <rx:DueTime>PT0.1S</rx:DueTime>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="BooleanProperty">
          <Value>false</Value>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="ard:DigitalOutput">
          <ard:PortName>COM6</ard:PortName>
          <ard:Pin>5</ard:Pin>
        </Combinator>
      </Expression>
      <Expression xsi:type="Combinator">
        <Combinator xsi:type="rx:ElementIndex" />
      </Expression>
    </Nodes>
    <Edges>
      <Edge From="0" To="1" Label="Source1" />
      <Edge From="1" To="2" Label="Source1" />
      <Edge From="2" To="3" Label="Source1" />
      <Edge From="3" To="4" Label="Source1" />
      <Edge From="4" To="5" Label="Source1" />
      <Edge From="4" To="8" Label="Source1" />
      <Edge From="5" To="6" Label="Source1" />
      <Edge From="6" To="7" Label="Source1" />
      <Edge From="9" To="10" Label="Source1" />
      <Edge From="10" To="11" Label="Source1" />
      <Edge From="11" To="12" Label="Source1" />
      <Edge From="12" To="13" Label="Source1" />
      <Edge From="13" To="14" Label="Source1" />
      <Edge From="13" To="17" Label="Source1" />
      <Edge From="14" To="15" Label="Source1" />
      <Edge From="15" To="16" Label="Source1" />
    </Edges>
  </Workflow>
</WorkflowBuilder>

[bruno-f-cruz]

Might be an initialization problem. Can you add and set CreateArduino operator at the top of your workflow and try again?

[ktyssowski]

Thanks! That helped a lot!

[ktyssowski]

Solution was to add a CreateArduino operator at the top of my workflow. Thanks to @bruno-f-cruz