Hi LDiego,
It seems I am more interested in faster analog read. I am told that because of the I2C expander, the analog read is grossly limited to a mere 100+Hz. That's terrible. But it seems that I can access fast analog read through the linux operating system. But I am not told how much faster it is on linux. I have not used linux before, nor linux on arduino, but I am willing to try. but is there a way to bypass the i2c expander on arduino?
Thank you.