Hello Der,
M trying to make a small Home based Security System. I need to interface the PIR Sensor & the Siren generating IC UM3561 with my arduino board. So when an intruder enters a flat & comes in the range of the PIR the IC should get triggered & the siren sound should be generated. It should also have a way to switch off the circuit so that when the flat owner comes he should be able to switch it off before entering the flat. Pls kindly help me out. Thank You. Suggestions are most welcome.
Here's what you need...