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pcb for laser alarm

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MrDEB

Well-Known Member
first need schematic

a pcb is nothing except a sheet of plastic with copper plating.
need a circuit then one can design a pcb for it.
I found pcb express to design.
 

ericgibbs

Well-Known Member
Most Helpful Member
a pcb is nothing except a sheet of plastic with copper plating.
need a circuit then one can design a pcb for it.
I found pcb express to design.
Morning MrDEB,:)

I think the OP is asking for a ready designed alarm pcb.?

BTW:
on your expresssch dwg program, if you set the 'snap' to a bigger step, it will help to make your connecting lines straight and easier for us to read.

Some of you dwgs are difficult to read, the 4017/555 for example, and I think it might put people off helping.;)
 

MrDEB

Well-Known Member
have tried but in wrong order

I made mistake of changing the snap AFTER I have started inserting componets.
The snap dosn't come out straight then.
Will do better.
 

ericgibbs

Well-Known Member
Most Helpful Member
I made mistake of changing the snap AFTER I have started inserting componets.
The snap dosn't come out straight then.
Will do better.
dont forget the 'G' button short cut, snap on/off.;)
 
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