Hey,

I´m building a Prusa i3 from 3dprinterczar and i finished the mechanical and electrical assembly and wiring.

It´s working with an Arduino 2560 and RAMPS 1.4.

Right now I´m having trouble with the heatbed thermistor.
I attached a picture of it here [attachment 32474 thermistor.JPG] . I didn´t get any infos from the vendor so i tried every options in the thermistor settings and my latest configuration is:

#define TEMP_SENSOR_0 1
#define TEMP_SENSOR_1 1
#define TEMP_SENSOR_2 1
#define TEMP_SENSOR_BED 1

The hotend thermistor works fine (20.6 C in my room) but the heatbed gives me 81.4 C!
I have a 2nd thermistor and connected it to the board as well and it´s the same temperature.

As i said I tried all options but option no. 1 was the closest!

Does anyone have the same problem or knows the solution?

Best regards
Alex

#define TEMP_SENSOR_0 5
#define TEMP_SENSOR_1 0
#define TEMP_SENSOR_2 0
#define TEMP_SENSOR_BED 5

Try that.