'All a buzz' in the Hard Materials Room

By Paul Cook | Posted: Tuesday March 21, 2017

This busy group have been making small light sensitive buzzers on Tuesday afternoons.

Twenty children, a mix of Year 7 and Year 8 students, have been making light sensitive alarms each Tuesday. 

Running on a 9v battery these compact and portable units can be used to improve the security of your belongings.

If placed in a box, cupboard or a drawer they are armed and quiet.  When light falls onto the LDR (light dependent resistor) it activates a 90db Piezo Siren that is sure to let everyone know that security has been breached!

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