Which Arduino device to apply multiples small voltages

Using Arduino Project Guidance
1

Hello,

For an artistic project connected to the subject of my PhD, I would like use one Arduino devices, but I don’t know which one is the most adapted. In this project, I need to apply a multitude of small voltages (from +0.8 to -0.8V) to large array of electrodes (the voltages need to be applied all together so a scanning technic like to one presented in the LED 8*8 matrix would not work). So far, I’m using the analog output of a DAQ device (NI USB-6008), but here number is limited to two. What would you recomand ?

Thanks for your help,

2

zagg_zag:
Hello,
I need to apply a multitude of small voltages (from +0.8 to -0.8V) to large array of electrodes (the voltages need to be applied all together

My crystal ball is in repair.

-Define "large" array
-Are you willing to use one DAC per electrode?
-What are the timings?
-What are the currents flowing into the electrodes?

3

There are many DAC on the market at your choice. SPI interface allows for any number of devices, I2C can be fooled for many devices as well.