cobra148

Gee you guys are good.
I can see that without your help, I would have had stormy times ahead with this project.

And now I feel good to go with it, except for the second board transistor interference problem.Just need some clarity on that part. Do I now feed the both boards with 5v reg's ?.

One other thing was the transistor being the wrong way round ,on looking at
the last schematic I attached,do you think it is wrongly placed ?.

Can I use a wire wound 2 watt resistor, I seem to have trouble locating
a carbon type 2w, is the inductive part of the resistor important in this
project ?.

I thank both of you so much for staying with me on this, and as you
probably guessed I am only at the 1st rung of the ladder in electronics,
(Well standing on a brick towards the 1st rung to be more precise).

The thing you have both taught me is,that there is always room for
improvement , & I would have surely lost a few components if I wasnt
aware of the problems noted here.

Many thanks both.

audioguru

The datasheets for the BC547 transistors that I have show which pin is which and the pins are in a straight line, not in a triangle.
With the leads pointing down and looking at the flat part of the case the pins from left to right are Collector, Base and Emitter. Most European transistors are like that.
American 2Nxxxx transistors are the opposite at Emitter, Base and Collector.

It does not matter which type of 2W resistor you use because the 10uF capacitor cancels its inductance.

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Uncle $crooge