hi , i just try to test the new marlin firmware and i end up screw two arduino board with two sets of ramps and driver. since i tested , i see the 3 axis blink with this ?, as you can see the image . i try to go back to old version of marlin and same think now on both board mega2560/ramps1.4 before the update all ok, now i can get to stop blinking. i can move axis with no problem end stop works. ??? any idea. i try to go back on the arduino ide software to old version nothing.
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