Marlin Temp sensor setting for Ultimaker Original Heat bed

[jcosmo 5]

Hi,

I'm fiddling with custom firmware for a slightly altered Ultimaker Original.

The UMO has the standard Ultimaker Heat Bed upgrade installed and if I upload the 'standard' firmware included in Cura 15.04, then the heat bed functions correctly.

I've not yet managed to find what the correct TEMP_SENSOR_BED setting should be to build by own firmware that will work.

Any hints?

//// Temperature sensor settings:

// -2 is thermocouple with MAX6675 (only for sensor 0)

// -1 is thermocouple with AD595

// 0 is not used

// 1 is 100k thermistor - best choice for EPCOS 100k (4.7k pullup)

// 2 is 200k thermistor - ATC Semitec 204GT-2 (4.7k pullup)

// 3 is Mendel-parts thermistor (4.7k pullup)

// 4 is 10k thermistor !! do not use it for a hotend. It gives bad resolution at high temp. !!

// 5 is 100K thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (4.7k pullup)

// 6 is 100k EPCOS - Not as accurate as table 1 (created using a fluke thermocouple) (4.7k pullup)

// 7 is 100k Honeywell thermistor 135-104LAG-J01 (4.7k pullup)

// 71 is 100k Honeywell thermistor 135-104LAF-J01 (4.7k pullup)

// 8 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)

// 9 is 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)

// 10 is 100k RS thermistor 198-961 (4.7k pullup)

// 11 is 100k beta 3950 1% thermistor (4.7k pullup)

// 12 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)

// 20 is the PT100 circuit found in the Ultimainboard V2.x

// 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950

//

// 1k ohm pullup tables - This is not normal, you would have to have changed out your 4.7k for 1k

// (but gives greater accuracy and more stable PID)

// 51 is 100k thermistor - EPCOS (1k pullup)

// 52 is 200k thermistor - ATC Semitec 204GT-2 (1k pullup)

// 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (1k pullup)

//

// 1047 is Pt1000 with 4k7 pullup

// 1010 is Pt1000 with 1k pullup (non standard)

// 147 is Pt100 with 4k7 pullup

// 110 is Pt100 with 1k pullup (non standard)

#define TEMP_SENSOR_BED ????WHAT????

[jcosmo 5]

I think I've answered my own question - seems that a '20' is what I wanted.

For some reason I had in my head that a 20 was associated with the UM2, not the UMO, and had disregarded it.