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Easy Laser Alarm Kit

View CJKIT-20829: Easy Laser Alarm Kit Knife (Security)

CJKIT-20829: Easy Laser Alarm Kit Knife (Security)

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Jameco Kitpro
Jameco Part no. 2169580
Manufacturer JAMECO KITPRO
Manufacturer no. CJKIT-20829
Catalog 142 , page 163
Pricing & Availability

$19.95

# of Unit Price
1+ $19.95
5+ $18.95
  • Availability:Ship  1 Days ARO 

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Easy Laser Alarm Kit

Experience Level: Beginner

Protect your home with the Easy Laser Alarm kit. It uses a 741 op-amp and 4017 decade counter as the brain and is powered by a 9V battery. If you like, connect a 9V wall transformer to the power connections to save your batteries. The kit works by sensing the light from the laser hitting the photoresistor which lowers the resistance, once the beam is broken the resistance increases and the 741 chip sends a pulse to the 4017 which sets off the buzzer. To reset the circuit the laser must be back on the photoresistor and then you push the reset button.

If you add mirrors to reflect the laser you can protect multiple entrances at once. Check out what others are saying about the Easy Laser Alarm project build!

Please note: Due to inventory packaging methods, you may receive extra components for some products.



Kit Includes:

Part No.
Qty.
Description
24539
1
LM741 Op Amp
45891
1
4017 Decade Counter
202403
1
Photoresistor
315660
1
Pushbutton Switch
335557
1
Piezo Buzzer
18922
1
Enclosure
2128067
1
Battery Holder
2210204
1
Laser Diode
2155452
1
Breadboard
2157159
10
1kΩ Resistor pack
--
1
Instructions


Required Tools:
  • Knife
  • Drill
  • Philips screwdriver
  • 9V battery
  • Wire
  • Hot glue

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