Temperature offset on heat bed

[nhof]

Hey all.

Is it possible to add a temperature offset to the temperature reading from the heat bed? I tried using the M912 command and it did not appear to do anything. I am on firmware version 1.18.

We make a lot of machines, and use a lot of silicone heat mats. The thermistors vary slightly between batches leading to readings being off. I would rather calibrate with an offset of a few degrees on each machine rather than trying to figure out proper thermistor parameters for every (slightly varying) heater.

Thanks!

[dc42]

M912 is for adjusting the CPU temperature reading. To adjust the bed heater reading at room temperature, I suggest you adjust the T parameter in the M305 P0 command.