Show current chamber temperature on 12864-display?

ÖrjanE

Hi.
I'm trying to configure my 12864-display to show the current chamber temperature, but can't find an N-parameter for the menu system that works. I have tried N90, but this seems to only work for an actively heated chamber, and only displays a zero value.

My chamber temperature sensor is defined like this:

M308 S2 P"0.spi.cs2" Y"dht22" A"Chamber Temp"  ; Chamber temp sensor

(this is a Duet2 Maestro board running RRF 3.4.1)
Do I need to define a (fake) chamber heater to make the N90-code work? Is this even possible?

/Ö

dc42

@örjane if you can wait for firmware 3.5beta1, in that version you can display the value of any object model expression on the 12864 display.

tecno

@örjane

Hej Örjan,
I have a std thermistor to monotor chamber temp

M308 S2 A"Chamber" P"T2" Y"thermistor" T100000 B4092
M950 H2 T2

Ha en bra dag
Bengt

ÖrjanE

@tecno Thanks Bengt.
I added the line

M950 H2 T2

to create a "fake" chamber heater. However, I still only get a zero value displayed on the 12864-display; both with codes N90 and N92 for addressing the chamber "heater".

/Ö

tecno

@örjane

Skippa DHT:n = skit

ÖrjanE

@tecno The sensor itself is working fine. I am actually using the AM2320 which is backwards compatible with the DHT, and I get the correct temperature in the web interface and in the object model. My problem is that I can't get this value to show up on the 12864-display.

tecno

@örjane

OK, sorry I misunderstood. Never played with 12864 display.

dc42

@örjane if you can wait for firmware 3.5beta1, in that version you can display the value of any object model expression on the 12864 display.

ÖrjanE

@dc42 Perfect!

Will that also include formatting of time-values as hh:mm:ss?

/Ö

dc42

@örjane that's not implemented at present, only the existing ability to choose the number of decimal places.