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  1. #1
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    ESP-01 not responding to AT command

    It's first time for me to use ESP-01 module. I am trying to test new module, using a serial monitor software 'AccessPort' / putty.
    Coming to my point directly, when i reset the module by connecting RST pin to ground, i get following message

    rl.l|.#o lpr2'{'# BoN.$oN #pcd`rlpo $   bn|l lpoN$l onl n{"N l pn rܜ  # o|߄pno d`no l`or'n rlpo rd bn|lrcon l oN $`or' l$`{'o dl`r$N܄No#rono.$"r{l.$"'ܜ   l$l~rd. 'ldlo. . ~ ..no'n2dlc llp#Br$`odd`bl $'oo|o$'# .$  d`rlr"ll {lrpd l`rl.l$`{l{$b#lbr|`"'c" coNn.l$$쎌$ld$d`n.b# lp b $ "p{ls$
    Ai-Thinker Technology Co. Ltd.

    ready
    Here i was expected that getting ready word(Even after garbage) means everything fine. But problem is module is not replying 'OK' on sending 'AT'.
    When i send 'AT' it replies 'ATAT'. Whatever i am sending it, It is replying double word. Means suppose if i send my name 'YOGESH' it is replying 'YOGESHYOGESH'

    Used Baud rate is: 115200, I also tried different baud rates.
    USB to TTL converter CP2120 is used to interfacing with PC

    I don't know, where i am doing wrong? or the module is faulty??
    Last edited by andre_teprom; 17th February 2017 at 21:15. Reason: added QUOTE tags

    •   Alt17th February 2017, 13:35

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  2. #2
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    Re: ESP-01 not responding to AT command

    don't bother with AT commands on an esp8266 : just program it directly with the latest arduino IDE it works better, faster and does not hang out !


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    •   Alt17th February 2017, 18:01

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    Re: ESP-01 not responding to AT command

    The first issue isn't a problem at all. Your text terminal is configured in such a manner that do not recognise non standard ascii characters. The second issue, is due to the fact that the modem is usually configured by manufacturer settings to echoe all received characters. There is a standard Hayes command to disable it. If I remember correctly the proper syntax, just type ATE0.
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    •   Alt17th February 2017, 21:19

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  4. #4
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    Re: ESP-01 not responding to AT command

    Thanx for your help.....
    Yes!!!! Now At commands are working fine. I just used the 'terminal' software instead of 'accessport'/'putty'.
    Here CR+LF settings are available easy.........Directly using arduino are also working........



  5. #5
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    Re: ESP-01 not responding to AT command

    Did you notice the Putty terminal emulation option settings?


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    Re: ESP-01 not responding to AT command

    OHHHHHHHH!!!
    Now i noticed these options in putty.....(Not tried yet)
    Thnx, i'll try it.......



    •   Alt20th February 2017, 05:51

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    Re: ESP-01 not responding to AT command

    The manufacturer's name is clear in your startup screen, so that means you're getting something okay. The gibberish characters could be graphics data, perhaps a logo.


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