Silicon Laboratories IRSLIDER2EK Si1142 User Manual page 2

Si1142 Infrared Slider Demo Kit
3. Running the Pre-Loaded Slider Demo
1. The board receives its power over the USB interface. Connect one end of a USB cable to the USB connector
(P1) on the Si1142 Slider Demo Board and the other end to a USB Port on the PC.
2. The red LED DS10 should light on the board, indicating that it is receiving power from the USB.
3. Position a hand about 5 to 10 cm above and perpendicular to the board. The visible blue LEDs will light
according to the position of the hand above the board.
4. To initiate a "pause" gesture, hold steady for about 3/4 seconds. The current LED position indicator will blink a
few times to indicate that a pause gesture has been detected.
5. To perform a "swipe" gesture, move the hand from left to right (swipe right) or right to left (swipe left) above the
entire length of the board. The LEDs will briefly light in a sweeping pattern to indicate that a swipe gesture was
detected.
On this board, the infrared emitters used are OSRAM part number SFH 4056. These emitters have a power rating
of 40 mW and a half-angle of 22 degrees. Other emitters with different characteristics may also be used,
depending on the specific application requirements.
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