Just after writing this I checked my breadboard again and I had a mistake in there. I took out the RLim as well as the Capcacitor and it works as well.

Positioning the 270Ω in the correct place it went extremely hot and I guess it was at the limit of it wattage.

Will keep playing with it ..

Is it really necessary to have a limit resistor and a cap in the circuit ? I see no difference

 

I don't see them in the example circuits, but I may be misunderstanding the question.

[edit] C1 is a decoupling capacitor, so I would leave it in.

 

I used a LM3914 calculator which I found in a thread in the electro-tech-online forum and from there came the idea to use a limiter resistor and the capacitor.

What does a decoupling capacitor do in reality in this case ?

 

I'd follow what it says and ignore me. I've never used an LM3914 and was just trying to critique your drawing by questioning anything I didn't understand. That page seems to offer practical advice. Certainly the resistor and capacitor are doing no harm.

 

Well.

All this started on 13 of June 2013 and today finally I was able to do a longer real life test on an Equatorial mount and a camera in order to see how it works.

I am really satisfied how far I got in this 8-9 weeks ...

Without your help I would not have got so far HUGE THANKS

I have to analize now the video I made 80 minutes in total to get the sensibility and then work on more hardware.

Tomorrow more videos will be shot.

Look at the image here

 

I am really satisfied how far I got in this 8-9 weeks ...

Nothing quite like success.