The Dual Button Bricklet is equipped with
two buttons and can extend Bricks. Both buttons have a
built-in blue LED. You can read the current state of the button
(pressed/released) and of the LED (on/off). You can turn the LED on/off yourself
or enable auto-toggle. In auto-toggle mode the LEDs are toggled between on/off
with each button press.
It is also possible to use events. This allows to react to button presses
To test a Dual Button Bricklet you need to have Brick Daemon and
Brick Viewer installed. Brick Daemon acts as a proxy between
the USB interface of the Bricks and the API bindings. Brick Viewer connects
to Brick Daemon. It helps to figure out basic information about the connected
Bricks and Bricklets and allows to test them.
Connect the Dual Button Bricklet to a Brick
with a Bricklet Cable.
If you connect the Brick to the PC over USB, you should see a new tab named
"Dual Button Bricklet" in the Brick Viewer after a moment. Select this tab.
If everything went as expected you can now see button presses and
change the state of the LED.
After this test you can go on with writing your own application.
See the Programming Interface
section for the API of the Dual Button Bricklet and examples in different programming