Z-uno2 analogRead range

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yves
Posts: 44
Joined: 17 Sep 2021 18:05

Z-uno2 analogRead range

Post by yves »

Hi,

I am close to finish my current project, even with some 'unstable' workarounds (see my previous topics)...
In fact, I am porting a Z-Uno1 application to Z-uno2 board taking advantage of increases in performances to add some functionnalities.

My last problem is that, when performing calibration of ADC channels, I found a large difference in the final coefficient [ mV = Coef * binvalue]: 26.0 instead of 17.0

When I apply 2.3V on ADC (1 or/and 2), I get 468 binary levels (ie around 5mV/level).
So that full range (1024b) corresponds to 5V instead of 3V on Z-Uno1.

Is this what was expected?

Regards,
Yves

Here is my config (Only the first point is relevant for that issue):
  • Z-Uno bootloader version:3.0.9
    Security:none
    Frequency:EU
    Device included:yes
    Device included securely by controller:no
    Controller:Fibaro HC2
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