ErikZalm/Marlin — Issue #31: Marlin reading wrong temperature (RAMPS 1.2 / Arduino 1280)
Author: ghhb
Created: 2011-12-09 07:05:26+00:00
State: open

RAMP1.2
Atmega 1280 (not 2560)
Pronterface.py

I've compiled Marlin and Marlin v1 from pulls as of yesterday. I'm using

#define MOTHERBOARD 3
#define THERMISTORHEATER 1

I had to delete the wiring.c and serial_wiring.c files to get it compile - is that appropriate - why are these still included?

Besides changing axis feed rates, that's the only only default changes.

I'm using Pronterface.py but getting temperature readings of 151.2c at "room temperature". Sprinter (and SJFW) with the same defaults reads 29c which is correct so I'm using the correct thermistor settings. If I set to PLA temperatures, it does indeed climb from 151.2c (so it is reading something 'related' to heat, but obviously at a printed value of 185c (which is only warmer) it's still far too cool to actually print.

Ideas?

Thanks, hb