Wierd symbols in the Serial Monitor

Official Hardware Nano Family Nano ESP32
1

Hi,

I am using an ESP32 with the WiFi library with a ntp server. I am using the ntp server time for a clock wich I built. I have also tried it with an Arduino Nano without Wifi and a RTC and this functions. I would like to print the time in the Serial Monitor but I only get weird symbols like this " a� �+)� �$K����� DhOW�q,[�V3��3�B��Y�`�bb@���� ;�aW ��W(�N

H��m@��]���B,�Q�0�/�������yh8��8����,�SVd���X�P�.�ـ�@ V$%��L��a�����0�N�H��6 a� �+)��)-�A� X�Z��0)� A$K2 �a���\��! �Ke ������\ bb� ��L.�������6���H��6�� D4O� b�$K�����aM�����!X��� �B�zY��n� ����$�� @�(yĨ6]���a�,� @8H�(3A.^0Qs � �T��I�<�� !�']Ƞ�)�.�8A�/��'�Ƞ��1�e,p�(� ,�zy���� �BX���������\ �V3� �r� DdOW%��@� K����� �4���9)-� �G����lc�®�,�$���L���r��RW�#�z��

`f��]�A�!�Y�� qJ� ���R�zy�0��NbH��.� � ,�~�". But I do not know why.

2

This happens when you have not set the baud rate in the serial monitor to the same baud rate you are feeding the signal to the serial monitor.

1 Like
3

As @Grumpy_Mike said, most likely the baud rate is wrong - see:

Serial Communication - SparkFun Learn.

4

I have the same baud rate in the Serial Monitor

5

Are you 100% sure of that?

IIf so it could mean your Arduino is broken.

6

or maybe running at the wrong clock speed?

7

Do you see that only at boot time? The ESP32 may print debug information at that time, if your sketch/monitor is set for a different baud rate, the debug message will look like that...

I have the same baud rate in the Serial Monitor

What baud rates are you using?

8

I am using 9600.

9

You answered only one of two questions.

1 Like