Adam Redfern
Published © CC BY

Fridge Door Alarm

Build yourself an alarm that will sound if the fridge door is left open for too long.

BeginnerFull instructions provided1 hour159
Fridge Door Alarm

Things used in this project

Hardware components

Buzzer
×1
NPN transistor
×1
1k Resistor
×1
10K Resistor
×1
NE555
×1
Microswitch, IP67
Microswitch, IP67
×1
PCBWay Custom PCB
PCBWay Custom PCB
×1

Story

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Credits

Adam Redfern

Adam Redfern

45 projects • 19 followers
Electronics enthusiast/hobbyist. Twitter: @AdamRedfern Website: http://ohmega-electronics.co.uk/

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