Monday, November 28, 2011

Dummy Security System -Sponsored by Farnell.com

You own an old car and would like to scare off thieves? Build your own fake security system!


I got all the parts i needed from Farnell Electronics! Also check out Element14!

Parts Required (All available @Farnell.com)Check out the links next to the components!


  • resistors: 1k, 10k, 680k   Resistors
  • capacitor: 10µF radial   Capacitors
  • LED: red superbright, 5mm diameter  LEDs
  • 7555 low power timer IC  7555
  • 8-pin DIL socket for IC
  • battery clip
  • 4.5V battery box for 3 AA cells
  • stripboard: 8 rows × 16 holes  Stripboard 
This Dummy Alarm project makes an LED flash briefly once every 5 seconds to imitate the indicator light of a real alarm. The circuit is designed to use very little current to prolong battery life so that it can be left on permanently. An on/off switch is not included, but could be added if you wish.  
See the whole circuit after the break:

Tuesday, November 15, 2011

Halloween Combine Costume

Doesn't everybody love Halloween?
Just take a look at these sweet costumes!
If you want to see how we made the masks and costumes, read more after the break!