Description
This circuit is designed to be connected to a PIR motion sensor. Its uses signals from the PIR sensor to trigger the circuit, which will then play back the recorded message.
Common applications include:
-Welcoming message to customers or visitors
– Security message to warn intruders or after-hours visitors
– Safety notification for hazardous areas or situations
– Connect to Coin Collector to create a message or sound for a donation box
– Many more !
Technical Specifications
– Power supply : 5VDC,
– Maximum current consumption = 250mA.
– Sensor connection point can handle positive signals from 3-12 volts.
– Detection Range : Up to 2.5 meters.
– Option to record audio from a microphone or an external source.
– Maximum audio recording time is 680 seconds.
– The circuit includes a 5-watt audio amplifier.
– Circuit board dimensions: 79.76 mm X 37.85mm (3.14 inches x 1.49 inches).
Connection Points:
– 5V point: Connects to the power supply 5VDC.
– SP point: Connects to an 8-ohm speaker with a power range of 0.25-5W.
– VR100K: Volume control for the speaker output.
– Switch SW2: Used for selecting operation modes.
