Hello everyone. While connecting a4988 i connected just opposite to the way it should have been to cnc shield as the markngs were not properly visible. Now led of the uno is not turning on and com port not detected.please suggest...
Unless you have the equipment and spare parts to repair the UNO, use a new board.
Paul
Thanks for reply. While rechecking i found the leds on but the device is not recognised by laptop. Anything else i can do...
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