Yk568l Manual

The device turns on momentarily when you first apply power. Cause: This is usually a code issue. Microcontroller pins often float (have an undefined state) during the boot-up sequence. Solution: In your code, set the pin mode to OUTPUT and write a LOW state to it immediately in the setup() section before any delays. Alternatively, use a pull-down resistor on the input pin.

The right LED will turn green, signaling that you are successfully in programming mode. 2. Change the Master Programming Code yk568l manual

Check these locations for the (yk568l may be a partial or internal code): The device turns on momentarily when you first apply power

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