Thermistor daughterboard beginner question.

[sd_matt]

@davidvh86
"PT100 RTD Board Revision 1.1a By Duet 3d CERN OHL 1.2"

Read right off the board

[sd_matt]

@bearer Im not sure if Im correct on the config as someone else walked me through it.

[Elvis0z]

This post is deleted!

[A Former User]

now if we only had a picture to show where the board is connected and how the sensor is wired we could correlate it to the config.

but as it seems that is too much to ask I'm afraid we're at the end of what we can assist you with.

[davidvh86]

This post is deleted!

[A Former User]

This post is deleted!

[davidvh86]

@bearer said in Thermistor daughterboard beginner question.:

" ; configure sensor 1 as thermocouple via CS pin spi.cs1

that is for firmware 3.x OP is using 2.02(RTOS) (2018-12-2

Oh sorry deleted it to avoid confusion lol

[dc42]

[deleted]

[A Former User]

This post is deleted!

[sd_matt]

@dc42 What info are you missing. I can re post

[sd_matt]

@davidvh86 Is there anything you want me to post to clear up any confusion?

[Phaedrux]

Post a photo of the sensor and the board.

[sd_matt]

@Phaedrux  

[sd_matt]

[sd_matt]

@Phaedrux With the wire, or a 100 ohm resistor, or simply with the "daughterboard" removed I get the same result.......2000 and fault

[dc42]

Use the 100 ohm resistor. A wire will give you a 2000 reading.

If you send the M305 P3 X201 command from the console, does it respond with an error message?

What is the response if you send M305 P3 X200?

[Phaedrux]

@sd_matt said in Thermistor daughterboard beginner question.:

That is a thermistor, not a PT100 sensor.

Either connect the thermistor directly to the thermistor inout on the Duet board, or get a PT100 sensor like this to use with the daughterboard.

https://e3d-online.com/products/pt100-temperature-sensor

[sd_matt]

@dc42 said in Thermistor daughterboard beginner question.:

If you send the M305 P3 X201 command from the console, does it respond with an error message?
What is the response if you send M305 P3 X200?

If you send the M305 P3 X201 command from the console, does it respond with an error message?
No

What is the response if you send M305 P3 X200?
M305 P3 X200
Error: Failed to initialise RTD: bad response from sensor

[sd_matt]

@Phaedrux Ordered the part

[dc42]

@sd_matt said in Thermistor daughterboard beginner question.:

@dc42 said in Thermistor daughterboard beginner question.:

If you send the M305 P3 X201 command from the console, does it respond with an error message?
What is the response if you send M305 P3 X200?

If you send the M305 P3 X201 command from the console, does it respond with an error message?
No

What is the response if you send M305 P3 X200?
M305 P3 X200
Error: Failed to initialise RTD: bad response from sensor

You can also try sending just M305 P3. The response should include a description of the last error.