Two Analog Shields on the same Arduino Uno Board

[effevalerio]

Hi and good morning to all !

I'm new of this forum, my question is simple,

I need more than 4+4 16bit ADC+DAC Inputs Outputs ,

there is a way to use two or more "Analog Shield" with the same Arduino Uno Board ?

Many thanks.

 

Valerio

[AndrewHolzer]

@effevalerio,

You will have issues stacking two Analog Shields on top of a single Arduino. Each shield will share the same MOSI/MISO pins, and the chip selects for the DAC and ADC when stacked, so you'll have troubles communicating with a single DAC or ADC off each shield. If you were able to reroute the chip select pins for the second shield, you could get the system to work, however this sounds like a huge hassle. You could perhaps create your own shield with ADCs and DACs that have more channels, or a shield that has more ADCs and DACs.

So, to answer your question directly, there really isn't a way to use more than two Analog Shields with the same Arduino Uno board without some effort.

AndrewHolzer

[effevalerio]

14 hours ago, AndrewHolzer said:

@effevalerio,

You will have issues stacking two Analog Shields on top of a single Arduino. Each shield will share the same MOSI/MISO pins, and the chip selects for the DAC and ADC when stacked, so you'll have troubles communicating with a single DAC or ADC off each shield. If you were able to reroute the chip select pins for the second shield, you could get the system to work, however this sounds like a huge hassle. You could perhaps create your own shield with ADCs and DACs that have more channels, or a shield that has more ADCs and DACs.

So, to answer your question directly, there really isn't a way to use more than two Analog Shields with the same Arduino Uno board without some effort.

AndrewHolzer

Thanks Andrew for your fast reply,

I will look for alternative multi-IO boards :-(