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Topic: Metal imaging system (Read 4122 times) previous topic - next topic

aaronadams3

#30
Dec 08, 2012, 07:13 pm Last Edit: Mar 16, 2015, 08:44 pm by aaronadams3
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aaronadams3

#31
Dec 08, 2012, 07:23 pm Last Edit: Mar 16, 2015, 08:40 pm by aaronadams3
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aaronadams3

#32
Dec 08, 2012, 07:24 pm Last Edit: Mar 16, 2015, 08:44 pm by aaronadams3
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aaronadams3

#33
Dec 08, 2012, 07:37 pm Last Edit: Mar 16, 2015, 08:45 pm by aaronadams3
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aaronadams3

#34
Dec 08, 2012, 07:59 pm Last Edit: Mar 16, 2015, 08:45 pm by aaronadams3
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winner10920

I don't have an exact chip to suggest but basically any ADC that works with spi (serial protocol interface I think ), basically each adc shares 3 wires(databus) and one has its own chip select, this would be the fastest way
you could also get an adc that uses i2c instead and you will have only a 2 wire then, but its alot slower
the point tho of using a databus tho would be instead of 100 sensors all connected in one spot you could split it up in groups with alot less wires at the mcu
The only time I've seen something with that many analog inputs was a mixing table from 1986 it didn't have that many but it had 4 8channel adc that communicated thru an 8bit data bus with a separate adress bus, lol but that's oldschool I guess

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