Thanks for the reply!
This is the board I ordered: [www.ebay.com]
I haven't received it yet, but I'll measure the resistance when I get it. But the add says I'll probably need a relay (and I've read that elsewhere for large boards).
So what's limiting the current on the RAMPS 1.4 board to 10A? Is it just the MOSFET that's built into the board that can't handle more than 10A? If so, maybe I can just desolder that one and replace it with one that can handle the current of the large heatbed?
Or I can just make a simple circuit with high-current MOSFET using the output from the RAMPS board? MOSFETS are cheap, so I went ahead and ordered a couple of high-current MOSFETs (in N and P types), but I'm still not sure exactly how I should wire it.
This is the board I ordered: [www.ebay.com]
I haven't received it yet, but I'll measure the resistance when I get it. But the add says I'll probably need a relay (and I've read that elsewhere for large boards).
So what's limiting the current on the RAMPS 1.4 board to 10A? Is it just the MOSFET that's built into the board that can't handle more than 10A? If so, maybe I can just desolder that one and replace it with one that can handle the current of the large heatbed?
Or I can just make a simple circuit with high-current MOSFET using the output from the RAMPS board? MOSFETS are cheap, so I went ahead and ordered a couple of high-current MOSFETs (in N and P types), but I'm still not sure exactly how I should wire it.