A customer has asked what goes into position SK3 on the MK193 PCB. Can you clarify as I see nothing in the instructions or component listing about this.
SK3 is an ICSP connector.
This connector is not supplied.
People that know how to use it can mount a header so that they can reflash the board with custom code.
OK thanks. Might be worth adding a note to that effect in the instructions to avoid confusion.