Sota LAVA heated bed - Thermistor help!

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Sota LAVA heated bed - Thermistor help!

Postby Q*bert » Mon Nov 26, 2012 4:19 am

I bought a Hadron kit from Automated Technologies and it came with a Sota Designs LAVA heated bed.

It seems that this bed is now a dead product and I can't find any documentation as to what thermistor it uses. The Sota website says it uses a surface mounted thermistor, but I've looked the board over and I can't identify it. It reads about 83 degrees at room temperature and it does respond to increasing temperature.

I have fired it up and it heats well, so I would like to get the thermistor working.

Anyone know what thermistor the LAVA uses or what table to use?
Q*bert
 
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Re: Sota LAVA heated bed - Thermistor help!

Postby orcinus » Mon Nov 26, 2012 3:09 pm

It's a 10k thermistor.

Code: Select all
#define TEMP_SENSOR_BED 4
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Re: Sota LAVA heated bed - Thermistor help!

Postby Q*bert » Mon Nov 26, 2012 3:34 pm

Thanks! I'll try it tonight.
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Re: Sota LAVA heated bed - Thermistor help!

Postby keos » Mon Nov 26, 2012 9:16 pm

guys so i have the same heated bed that came with the kit i bought from (ATI) and the RAMPS V1.4 Arduino Electronic Full Pre Assembled Kit came with a (100K thermistor) is this to replace the thermistor on the heated bed from 10k to 100k, or what is this thermistor for...

Thankx
Keos
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Re: Sota LAVA heated bed - Thermistor help!

Postby Q*bert » Tue Nov 27, 2012 1:27 am

keos wrote:guys so i have the same heated bed that came with the kit i bought from (ATI) and the RAMPS V1.4 Arduino Electronic Full Pre Assembled Kit came with a (100K thermistor) is this to replace the thermistor on the heated bed from 10k to 100k, or what is this thermistor for...

Thankx
Keos


The ATI kits are now shipping with a Helios heated bed which requires a separate thermistor. The Sota bed that used to ship with the kit had an integrated thermistor.

The Helios bed is black while the Sota LAVA bed is blue.

If you have the black Helios bed then you need the separate 100k thermistor.

Which bed do you have?
Q*bert
 
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Re: Sota LAVA heated bed - Thermistor help!

Postby Q*bert » Tue Nov 27, 2012 1:27 am

orcinus wrote:It's a 10k thermistor.

Code: Select all
#define TEMP_SENSOR_BED 4



Worked a charm! Thanks!
Q*bert
 
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Re: Sota LAVA heated bed - Thermistor help!

Postby orcinus » Tue Nov 27, 2012 1:52 am

Glad to hear!
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Re: Sota LAVA heated bed - Thermistor help!

Postby keos » Tue Nov 27, 2012 2:18 am

i have the blue one which is the SOTA Lava so if i have this one i do not need to do anything right...
except i have to add or replace this in the configuration.h in marlin (#define TEMP_SENSOR_BED 4) correct
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Re: Sota LAVA heated bed - Thermistor help!

Postby Q*bert » Tue Nov 27, 2012 2:55 am

keos wrote:i have the blue one which is the SOTA Lava so if i have this one i do not need to do anything right...
except i have to add or replace this in the configuration.h in marlin (#define TEMP_SENSOR_BED 4) correct


That's it! Default Marlin firmware connections are D8 for the power to the heated bed and T1 for the thermistor. You can change these in pins.h if you wish.
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Re: Sota LAVA heated bed - Thermistor help!

Postby keos » Tue Nov 27, 2012 3:09 am

Q*bert thanks but I am new on this; what do I need to do in pin.h can you please be a little more descriptive
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