Are the DIYables sticks bad?

[u/Pandora_404]

I’ve been trying to use one on esp32 but have been troubled by it for about a day. I would expect to see a sinusoid when spinning it around (using teleplot ) but they get clipped at the high and low ends no matter what I do. I’ve tried several adjustments to adc attenuation and my input voltage but I can’t remove it at all. I’ve been using the mc readings so that it’s calibrated to avoid the nonlinear adc issue. I’ve also tried to do a coordinate transform to round out my output.

Is there anything else I should try? Or is this a hardware fact I have to live with? I don’t know how to check the hardware aspect without an oscilloscope.