Visual VDI - test version

[e. j. fowler]

Some more questions......

hello again.

I was wondering, at what points does this circuit get connected to the detector. Is there only 2 points or is there more?

Also, the Atmel chip you use in your version .1, you included other possible chips and displays. Could there be other programmable chips used that are similar?

When powering the circuit, are you using a separate power supply or are you using the power from the metal detecor?

thanks

ejf

[Edwin J. Fowler]

Re: Visual VDI - test version

I have 2 other chips that might be useful for this project. Actually it's one other type of chip, since 1 is a Phillips [p89c54ufpn] amd os om the 8-bit microcontroller family. teh other chip is a atmel at8955. I think these would work as well, but not sure. I should e-mail you the data sheets since I think you would be better versed in determining if they are compatible with minor changes.

thanks.

ejf

[sevzirfo]

Compatible chips

Your chips are not compatible. The chip at90s8535 can be tried to replace on ATmega8535 in a mode of compatibility.
It is possible slightly to change the program for to use the following chips of firm ATMEL - ATmega8, ATmega16, ATmega32, ATmega64, ATmega128, the list not complete is possible...

[sevzirfo]

Re: Some more questions......

The circuit connected to the detector in 4 points. Channel X, Channel y, GND(-5v), +5v
In different detectors - different complexity of problems of connection of this device

The compatible chip - ATmega8535 with the activated mode of compatibility.
I using the power from the metal detecor with the additional stabilizer +5V

[Mike Hillis]

Re: Visual VDI - test version

sevzirfo,

I like what you are doing here. Does this compare to the discrimination chart that goodrat posted alittle further down?

Thanks,

Mike

[sevzirfo]

Re: Visual VDI - test version

Yes, it is compared to the diagram of discrimination, the image in an ideal case is similar to a narrow petal. The arrangement and size of a petal depends on a kind (phase) of metal and force of a signal.