MAX31856 duet2 wifi board pin number

[gorf32]

looking to see if i can find the pin values for duet MAX31856 connected to the duet2 wifi v1.03

pin referring to:
sensor_pin: PB14 -- I think this is correct
spi_speed
spi_bus ?
sclk_pin ?
mosi_pin ?
smiso_pin ?

any help would be great

Thanks gary

[zapta]

@gorf32 said in MAX31856 duet2 wifi board pin number:

MAX31856

If it helps, this is the schematic of 1.04.

https://github.com/Duet3D/Duet-2-Hardware/blob/master/Duet2/Duet2v1.04/DuetWifi_Schematic_v1.04.pdf

[droftarts]

@gorf32 Here's the schematic for the Duet3D thermocouple board: https://github.com/Duet3D/TempDaughterboards/blob/master/MAXTempTC/MAXTempTCv1.1.pdf
Wiki page: https://docs.duet3d.com/Duet3D_hardware/Accessories/Thermocouple_Daughterboard

Ian

[o_lampe]

@gorf32 This is a pinmap I often use as reference.

[gorf32]

@zapta Thanks I got it working sort of, it reading the temp but it seems to be about 20c to high when cold i am getting a value 43c cold it should read around 23 to 25c

thamks

[dc42]

@gorf32 if the reference resistor on your MAX31865 board has a value other than 400 ohms then you need to tell RRF what value it is using the R parameter of the M308 command.

[gorf32]

@dc42 I don't know much about circuits, but i think this is the layout

[dc42]

@gorf32 looks like your reference resistor is 430 ohms.

[gorf32]

@dc42 Thanks i did get it to work was a value of 400