eazrael

There's a lengthy comment in the code: ``` # Open FFCP2, 25° ambient temperature, ADS1118 reports 33° which also # pushes the extruder thermocouple to 33°C. Seems that 25°C is...

Oh, i did not find this. I read the Datasheed section and SLAU509 and sbaa274a from TI. But the issue is that you do not have the real cold junction...

The thermocouples sit in the hotends, connected via PCB traces and simple cables to the Mainboard. Unless I total misunderstood thermocouples, the cold junctions is just outside of the extruder...

Unfortunately no :-( As I did not expect that the ADS1118 is used elsewhere I just set it at 25°C for the temperature calculation. I will change that back to...

https://evilazrael.net/tmp/temps_at_25_fixed.jpg https://evilazrael.net/tmp/temps_adc_adjusted.jpg 1 sek between them. I doubt that you can get a reliable temperature.

Sorry for the thermocouple discussion. Have never seen thermocouples before this project. When I made my "finger test", the thermocouple was directly connected to the mainboard, without the extruder PCB...

I did a couple of tests, Without any modification the ADC temperature is the closest you can get to the cold junction temperature in the FFCP2. The regression tests are...

Not at all, this was supposed to go into my Pr. Sorry :-(

Cutting the discussion above short: The FFCP2 cannot measure the extruder temperature correctly. The ADS1018 & ADS1118 (ADS1X18) are the SPI variants of their ADS1X1X siblings with a simple SPI...

> > The ADS1018 & ADS1118 (ADS1X18) are the SPI variants of their ADS1X1X siblings with a simple SPI wire protocol > > Thanks. At a high-level though, #6584 seems...