So I have the heated bed that came with the kit: https://www.tindie.com/products/mjrice/pcb-heatbed-for-3d-printers-200-x-300mm/
I am in the middle of converting it over to 24V, when I notice the resistance is wrong.
According to the docs (on that page) the resistance at 12V should be ~1.4 Ohms, and at 24V it should be ~2.8 Ohms.
When I change from A-B and C-D connections to a B-C connection the resistance is actually 6 Ohms. This is slightly less power than at 12V. I did try putting a wire from only A-B or C-D (not both) and the resistance was where it should be at 2.8 according to the documentation.
Does anyone know if the documentation might be wrong or if this is an issue? Can I just hook it up at A-B or C-D?