i'm from germany, so my english maybe a little ugly.
I built a slider (belt-driven) with an engine from modelcraft.
Unfortunately they draw 2.1A at full load.
At high speed everything works just fine with the MX2. But at low speeds the motor just makes some noise but doesn't move.
Also calibrating the system in step 3 and 4 is not possible. It just doesn't moves an inch.
What may i do? Is the problem the 2.1 A?