SparkFun Simultaneous RFID Reader - M6E Nano with Arduino UNO

I have connected Arduino UNO with SparkFun Simultaneous RFID Reader. When I uploaded the first example code, the result (In the attached picture). Uploaded successfully, No error.

I press the key, but the serial monitor remains the same…

The next Serial. print key command is “Scanning”, seems like power is not enough…

Please help me to figure it out…

Make sure you have the UART switch in the right position https://learn.sparkfun.com/tutorials/si … stant-read and it looks like the photo shows “No line ending” instead of “Newline” - any change?