<![CDATA[SoliForum - 3D Printing Community — Need a little help here..(SOLVED)]]> 2015-09-27T08:39:51Z PunBB https://www.soliforum.com/topic/12401/need-a-little-help-heresolved/ <![CDATA[Need a little help here..(SOLVED)]]> I have a strange at least to me sensor for temperature on my bed for the printer I am swapping over to an Azteeg. It looks similar to a glass body diode. It could be a thermistor but I have not seen one in this style of package.  At room temp it measures 48.9K  and the resistance falls as it warms so maybe it is a thermistor, just a more durable one. There is also a 4.7K pullup tied between 5v and this device. Does anyone recognize it?

After some web browsing I did find a such animal as 49K thermistor and Honeywell axial thermistor. But most firmware does not have a table for 49K ohm thermistors to my knowledge. Call me noob cause I usually deal with already done stuff like thermistors and pullups but would it measure 100K without the pullup? It is such nice solder I really don't want to disturb it.

http://soliforum.com/i/?XAUmZy0.jpg

A closer image:

http://soliforum.com/i/?iA2chLM.jpg

I decided to just solder a 100K thermistor in place of this oddball. I did confirm it is a 49K Honeywell Axial Thermistor. So I just unsoldered one side of it and soldered a 100K across the pads then cut the the trace to the 4.7K pull up since the mainboard has them already on all the thermal inputs.

This way should I decide to go back to the mightyboard (why? I can just remove the 100K add solder back to the 49K then jumper the cut trace and the bed is back to it's screwed up stock form.

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