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smoke

Posted by frostin 
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frostin
smoke
December 03, 2014 02:48AM
smoke came a coming (that ive read from others) while trying to run the heated bed. luckily i got a new ramps and arduino coming. from the d8 + pin i checked it back to the psu ground. PSU volts is 12.16. + coming from the d8 pin is 10.55 volts. this is getting frustrating. i had it all calibrated (or started to) then i get smoke ;/.
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Ohmarinus
Re: smoke
December 03, 2014 07:19AM
Could it be the MOSFET on your power output for the heated bed?

http://www.marinusdebeer.nl/
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Wurstnase
Re: smoke
December 03, 2014 07:42AM
If your heatbed needs too much power your RAMPS gonna smoke. Normally a RAMPS can handle max. 11A on connection 8. That is a heatbed with max. 130W. Alot of beds have 160W which is too much for a RAMPS.

Triffid Hunter's Calibration Guide --> X <-- Drill for new Monitor Most important Gcode.
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frostin
Re: smoke
December 03, 2014 09:47AM
I'm using a mk2 bed
Measured ohm at 1.8
Also does RadioShack or anybody have a replacement fet?

Edited 2 time(s). Last edit at 12/03/2014 10:55AM by frostin.
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frostin
Re: smoke
December 05, 2014 08:07PM
I picked up a nte2991 fet, heatsink, and a fan.
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