- August 15, 2016 at 12:56 pm #16201
The mosffet card is good for the extruders, but Silvia won’t go to beds with this card (4 x irf540n)!!
Any advice?August 15, 2016 at 1:16 pm #16203
Heatsinks, big ones! Try insulating your beds (So they draw less power to warm up and keep at temp), maybe even get them up to temp one at a time (so they dump less heat into your heatsink at the same time). Once at temp I would imagine they should be fine.
I think You might actually have to go to something more efficient than those mosfets if a heatsink and fans don’t work.August 15, 2016 at 1:41 pm #16204
Hi V. This happened in 30 sec :D. These irf540n mosfets have a lot of internal resistance (44mOhm). Trying stick a mosfet from a Ramps on the red board (irf3205 – 8mOhm).
Feedback on this soon.
Maybe wrong topic, sry… could U move it to Q&A?
Tkx!August 15, 2016 at 2:29 pm #16207
Update: irf540N replaced by irf3205 (from RAMPS) and works pretty good!
So, no more fire; Silvia is now hot and near completion!
them up to temp one at a time
yep, already heating 1 channel/arduino loop, tkx 🙂
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