Cypress CY3236A, Manual, Page: 15 / 36

Pyroelectric Infrared Motion Sensor Evaluation Kit Guide, Doc. # 001-68617 Rev. *A 15
3. Kit Operations
3.1 Introduction
The CY3236A-PIRMOTION EVK allows you to evaluate Cypress’s' PSoC (Programmable System-
on-Chip™) device's ability to control a PIR sensor to implement motion sensing applications such as
automatic lighting controls, automatic door openers, security systems, kiosk wakeup, and activating
wireless cameras.
3.2 Evaluating the PSoC Device
To evaluate the default project programmed on the CY3236A-PIRMOTION board. Ensure that the
jumper (shunt) is not connected on J4. Power the board using the 12-V adapter at the power jack,
J1. Stimulate the infrared sensor by moving your hand over as shown in
Figure 3-1 . The sensor sta-
tus is indicated by D7, This LED (D7) turns on when hand is brought near the sensor. The Fresnel
lens is used to direct infrared rays from various angles toward the PIR sensor. The AC terminal block
can be used to connect an external hardware device.
Figure 3-1. Infrared Radiation Detected by Human Body
To adjust the length of time during which the relay is active, use the potentiometer, R7. Turn it coun-
ter-clockwise to increase the relay-on time and vice versa. Relay on is indicated by the LED, D2.
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