Description
The FK1902 uses a Passive Red Sensor (“PIR”) to detect movement (or heat) within it’s detection range, and then turns on a flashing “Like Symbol” Flasher.
The “Like symbol” Flasher alternately flashes between 2 different groups of LEDs. The LEDs are arranged in a green set and a red set, which simulate a “LIKE” emoji (thumbs up).
The flash rate can be adjusted by turning the potentiometer.
This basic kit has become popular with those interested in an introduction to “Systems Design” and understanding how “functional blocks” can be put together for a more complex result.
Technical Specification
– Power supply : 4.5-6VDC.
– Electric current consumption (Standby) : 3uA @ 6VDC.
– Electric current consumption (Working) : 130mA @ 6VDC.
– Use a PIR sensor to detect.
– The detection distance of the sensor is about 2 meters.
– Flash frequency is adjustable with a trimpot.
– PCB dimension : 65.8mm x 52.8mm (2.59 in. x 2.08 in)
