Electronic – arduino – esp8266 throwing random symbols when powered and not responding to AT commands

arduinoesp8266

I am trying to use ESP8266(ESP01) by interfacing it with Arduino using USB power.
I followed the given tutorial.

When I disconnect and reconnect ESP with Arduino it throws random symbols on the serial monitor and after doesn't responds to the AT commands. When I again disconnect and reconnect again some random symbols are thrown on the serial monitor.
enter image description here

I tried different baud rates but the result is same. I also noticed that at some baud rates it is not giving the random symbols. Also, my ESP doesn't have an updated firmware and I am using AMS1117 power module to step down 5V and using it as an input for ESP.

Any suggestions for this problem?

Best Answer

I had this problem as well. Trying all different firmware versions and baudrates I could find, finally helped. I don't remember which combination finally worked though, so you will have to do the same.

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