Hi everyone,
I've been trying to debug a problem in my Teacup firmware and it's driving me nuts. Everything works fine except that the temperature is reading around 4.75 C when I send an M105 through Arduino's serial monitor at room temperature; when I heat it up enough to melt plastic it'll read around 58-60 C, which is way too low. I think the temperature table is correct because when I use the exact same table with a simple Arduino script I found on the RepRap wiki I get a more reasonable value of around 20 C.
I'm using a Generation 2 electronics set (with a Duemilanove and Atmega 328) I used to control a Sherline mill (with spindle removed and extruder attached) and I'm trying to get it working with a Prusa I just built. I've always had this temperature scaling problem, but I used to work around it by telling Skeinforge to extrude at 60 C. But now with my new Prusa I would really like to exercise better temperature control and so I want to get this issue resolved.
So far Teacup's been great in every regard except for this little annoying glitch. What setting in Teacup could be scaling my temperature improperly?
Any and all help is appreciated!
--Aaron