Introduction: Laser Security System
It is simple laser security system using LDR
lets start ----
Step 1: You Need to Make
Bread board or vero board
transistor - cl 100 or bc 548b
Battery ( I use my old mobile phone battery 3.7v)
A laser pointer
Step 2: Making Circuit
make circuit as per diagram
on bread board or vero board
Step 3: Setting Laser Pointer Alignment
We have a be nice policy.
Please be positive and constructive.
if a did not keep the buzz then it dont sound .am i correct