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One Wire/Single Wire Sensors

The One Wire/Single Wire Sensors feature provides support for Tibbo's proprietary One Wire/Single Wire sensor protocol, enabling simple and efficient connectivity with Tibbo sensor modules (Tibbits).

Overview​

One Wire/Single Wire is a specialized protocol for:

  • Simplified sensor integration
  • Automatic sensor detection
  • Efficient multi-sensor communication

Supported Sensors​

One Wire/Single Wire works with Tibbit 62

Configuration​

Configure UnoWire with these properties:

  • One Wire/Single Wire Port: Hardware port for sensor connection
  • Scan Interval: Automatic sensor detection frequency
  • Poll Rate: Sensor reading update frequency
  • Timeout: Sensor communication timeout

Automatic Detection​

One Wire/Single Wire automatically detects connected sensors:

  • Plug in Tibbit sensor module
  • System automatically identifies sensor type
  • Variables created for sensor readings
  • Sensor immediately available in application

No manual configuration required for basic operation.

Sensor Variables​

Each detected sensor creates variables:

  • Sensor reading value (temperature, humidity, etc.)
  • Sensor status (connected, error, etc.)
  • Sensor ID and type
  • Last update timestamp

Use these variables in your application logic.

Hot-Plug Support​

One Wire/Single Wire supports hot-plugging:

  • Connect sensors while device is running
  • Disconnect sensors without stopping application
  • Automatic variable creation/removal
  • Application adapts to sensor changes

Multi-Sensor Support​

Connect multiple sensors simultaneously:

  • Each sensor gets unique identifier
  • Independent polling for each sensor
  • Parallel reading operations
  • Efficient bus utilization

Sensor Calibration​

Calibrate sensors for accuracy:

  • Offset adjustment
  • Scale factor correction
  • Temperature compensation
  • Application-specific calibration values

Store calibration in settings for runtime adjustment.

Data Polling​

Configure sensor polling:

  • Continuous: Constant reading updates
  • On-Demand: Read when triggered
  • Scheduled: Periodic readings at intervals
  • Event-Driven: Read on specific conditions

Balance polling rate with:

  • Power consumption requirements
  • Data resolution needs
  • Application responsiveness

Error Handling​

One Wire/Single Wire handles sensor errors:

  • Communication failures
  • Sensor disconnection
  • Invalid readings
  • Timeout conditions

Monitor sensor status variables to detect issues.

Power Management​

Optimize sensor power usage:

  • Reduce polling frequency
  • Disable unused sensors
  • Use sleep modes between readings
  • Power cycle sensors on errors

Integration with Application​

Use sensor data in your application:

Work with sensor data using:

Use Cases​

Common One Wire/Single Wire sensor applications:

  • Environmental monitoring (temperature, humidity)
  • Indoor air quality monitoring (CO2, particles)
  • Proximity detection and counting
  • Light level control for automation
  • Industrial process monitoring

Tibbit Hardware​

One Wire/Single Wire requires compatible hardware:

  • Tibbo Project System (TPS) boards
  • Tibbit sensor modules
  • Appropriate Tibbit slots on TPS
  • Proper power supply for sensors

Refer to Tibbo hardware documentation for details.

Sensor Specifications​

Each Tibbit sensor has:

  • Measurement range
  • Accuracy specifications
  • Response time
  • Operating conditions
  • Power requirements

Consult individual Tibbit datasheets for details.

Linking to Settings​

One Wire/Single Wire properties can be linked to settings for:

  • Runtime poll rate adjustment
  • Calibration values
  • Enable/disable sensors

Troubleshooting​

Common One Wire/Single Wire issues:

  • Sensor not detected: Check physical connection and slot
  • Intermittent readings: Verify power supply stability
  • Incorrect values: Check calibration settings
  • Communication errors: Reduce poll rate or check wiring

See Also​