Connecting an Adafruit Clock Generator Si5351 to an Arduino Uno

Projects General Guidance
28

PizzaGuy:

  1. Start the clock controller Arduino that generates a 13 Mhz signal.
  2. The signal is sent to the XTAL1 of the other Arduino
  3. I get the error: "programmer is not responding"

What am I doing wrong?

The serial port timing is generated from the system clock. The bootloader baud rate will only be correct when you set the clock to the expected 16 MHz. After you upload the sketch with the clock set to 16 MHz you can change the clock to another value.
If you want to use serial communications with a non-standard clock rate you will need to somehow compensate for the shift in baud rate.