Select

You can create a select with select:

ui:
  components:
    - key: voltage
      type: select
      label: "Power Supply Voltage"
      description: "Select the test voltage"
      required: true
      options: 
        - label: "3.3V"
          value: "3.3"
        - label: "5.0V"
          value: "5.0"

Properties

Display

You can configure how the select appears to the operator.

Property	Type	Required	Description
`key`	`string`	Yes	Unique identifier for accessing the value
`type`	`string`	Yes	Must be `"select"`
`label`	`string`	No	Display label for the select
`description`	`string`	No	Helper text displayed below the select

Value

You can set default values and bind to measurements or unit properties.

Property	Type	Required	Description
`default_value`	`string`	No	Default selected option value
`bind`	`string`	No	Bind to unit property or measurement. See Collect Input for details.

Options

You can define the list of choices available in the select.

Property	Type	Required	Description
`options`	`array`	Yes	Array of objects with `label` and `value` properties

Each option object has:

Property	Type	Description
`label`	`string`	Text displayed to the operator
`value`	`string`	Value submitted when selected

Validation

You can validate selection before the value is submitted.

Property	Type	Required	Description
`required`	`boolean`	No	If true, operator must select an option (shows "Required" badge)

TofuPilot validates operator input before submission, preventing continuation until all constraints are met. For some workflows, this input validation can create workarounds where operators bypass the UI to proceed.

Instead, you can capture the input as a Measurement using Binding and validate it with Validators. TofuPilot will record the actual operator input while enforcing pass/fail criteria.

Examples

Product Variant Selection

We'll let the operator select from multiple product variants:

phases:
  - name: Select Variant
    ui:
      components:
        - key: product_variant
          type: select
          label: "Product Variant"
          required: true
          options: 
            - label: "Standard - 8GB RAM"
              value: "std_8gb"
            - label: "Standard - 16GB RAM"
              value: "std_16gb"
            - label: "Pro - 16GB RAM"
              value: "pro_16gb"
            - label: "Pro - 32GB RAM"
              value: "pro_32gb"
            - label: "Enterprise - 64GB RAM"
              value: "ent_64gb"

Operator Selection

We'll track which operator is performing the test:

phases:
  - name: Operator Login
    ui:
      components:
        - key: operator_name
          type: select
          label: "Operator"
          description: "Select your name"
          required: true
          options: 
            - label: "Alice Johnson"
              value: "alice"
            - label: "Bob Smith"
              value: "bob"
            - label: "Carol Davis"
              value: "carol"
            - label: "David Lee"
              value: "david"

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Select

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