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Software / API Bindings / openHAB / API Reference and Examples / Bricklets / Linear Poti Bricklet

openHAB - Linear Poti Bricklet

Warning

The openHAB bindings are still in beta, but the development was stopped.

This is the description of the openHAB API bindings for the Linear Poti Bricklet. General information and technical specifications for the Linear Poti Bricklet are summarized in its hardware description.

An installation guide for the openHAB API bindings is part of their general description.

Thing

UID:
  • tinkerforge:brickletlinearpoti:[UID]
Required firmware version:
  • 2.0.0
Firmware update supported:
  • yes
Channels:
Actions:

Channels

Position

The position of the linear potentiometer. The value is between 0 (slider down) and 100 (slider up).

Type:
  • Number:Dimensionless
UID:
  • tinkerforge:brickletlinearpoti:[UID]:BrickletLinearPotiPosition
Read only:
  • Yes
Unit:
  • Percent
Range:
  • 0 Percent to 100 Percent (Step 1 Percent)
Parameters:
  • Update Interval – Type: integer, Default: 1000, Unit: ms, Min: 0, Max: 4294967295
  • Specifies the update interval in milliseconds. A value of 0 disables automatic updates.
Analog Value

Returns the value as read by a 12-bit analog-to-digital converter.

Note

The value returned by Get Position() is averaged over several samples to yield less noise, while Get Analog Value() gives back raw unfiltered analog values. The only reason to use Get Analog Value() is, if you need the full resolution of the analog-to-digital converter.

Type:
  • Number:Dimensionless
UID:
  • tinkerforge:brickletlinearpoti:[UID]:BrickletLinearPotiAnalogValue
Read only:
  • Yes
Range:
  • 0 to 4095 (Step 1)
Parameters:
  • Update Interval – Type: integer, Default: 1000, Unit: ms, Min: 0, Max: 4294967295
  • Specifies the update interval in milliseconds. A value of 0 disables automatic updates.

Actions

Actions can be used in rules by creating an action object. All actions return a Map<String, Object>. Returned values can be accessed by name, sometimes the type deduction needs some hints, as shown below:

val actions = getActions("tinkerforge", "tinkerforge:brickletlinearpoti:[UID]")
val hwVersion = actions.brickletLinearPotiGetIdentity().get("hardwareVersion") as short[]
logInfo("Example", "Hardware version: " + hwVersion.get(0) + "." + hwVersion.get(1) + "." + hwVersion.get(2))

Basic Actions

brickletLinearPotiGetPosition()
Return Map:
  • position – Type: int, Unit: 1 %, Range: [0 to 100]

Returns the position of the linear potentiometer. The value is between 0% (slider down) and 100% (slider up).

If you want to get the position periodically, it is recommended to use the Position channel and set the period with the configuration of Position.

Advanced Actions

brickletLinearPotiGetAnalogValue()
Return Map:
  • value – Type: int, Range: [0 to 212 - 1]

Returns the value as read by a 12-bit analog-to-digital converter.

Note

The value returned by Position is averaged over several samples to yield less noise, while Analog Value gives back raw unfiltered analog values. The only reason to use Analog Value is, if you need the full resolution of the analog-to-digital converter.

If you want the analog value periodically, it is recommended to use the Analog Value channel and set the period with the configuration of Analog Value.

brickletLinearPotiGetIdentity()
Return Map:
  • uid – Type: String, Length: up to 8
  • connectedUid – Type: String, Length: up to 8
  • position – Type: char, Range: ['a' to 'h', 'z']
  • hardwareVersion – Type: short[], Length: 3
    • 0: major – Type: short, Range: [0 to 255]
    • 1: minor – Type: short, Range: [0 to 255]
    • 2: revision – Type: short, Range: [0 to 255]
  • firmwareVersion – Type: short[], Length: 3
    • 0: major – Type: short, Range: [0 to 255]
    • 1: minor – Type: short, Range: [0 to 255]
    • 2: revision – Type: short, Range: [0 to 255]
  • deviceIdentifier – Type: int, Range: [0 to 216 - 1]

Returns the UID, the UID where the Bricklet is connected to, the position, the hardware and firmware version as well as the device identifier.

The position can be 'a', 'b', 'c', 'd', 'e', 'f', 'g' or 'h' (Bricklet Port). A Bricklet connected to an Isolator Bricklet is always at position 'z'.

The device identifier numbers can be found here.