PT100 Daughterboard not reading RTD1

Szalek

Hello!
I was trying to configure PT100 sensors on Duet2 (running RRF 2.05) with PT100 Daughterboard. I configured 2 virtual heaters for those 2 sensors:

M305 P100 X200 S"RTD1"
M305 P101 X201 S"RTD2"

Duet only returns "ok" for those commands, so I think that communication with MAX31865 chips is fine.

I can read the temperature from RTD2, but RTD1 always shows open circuit (2000.0 C). I tested with working PT100 sensors and with ~100 Ohm resistors - for both RTD2 works fine, RTD1 does not.

Phaedrux

Has this board ever worked?
When and where did you purchase?

Szalek

@phaedrux
This exact board behaved like that from the very beginning while another daughetboard works fine with the same configuration and the rest of hardware.

Bought directly from Duet3D.

Phaedrux

Please send an email to warranty@duet3d.com. Include a link to this forum thread and the details of your original purchase. You'll receive a reply with a form to fill out.