Laser Alarm System Question

Thread Starter

That One Kid

Joined Nov 1, 2009
2
The thing is I want to test it and where it shows the breadboard tutorial there is suppose to be a video. That video is not there even though I have the latest flash player. It also provides no written instructions on the breadboard tutorial.

So back to my original question, how do I get this diagram to a breadboard?
 

hgmjr

Joined Jan 28, 2005
9,027
It is worth mentioning that there is some risk of damage to the transistor associated with the circuit that is shown in the Instructables. The 5K potentiometer is wired in a manner that if adjusted to the extreme end of its range, the base would be connected to +9V. This can be avoided by placing a 1K resistor in series with the potentiometer.

hgmjr
 
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