ESPlorer can't communicate with ESP8266

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The first hit on Google for that ESPlorer timeout message is your friend: https://github.com/nodemcu/nodemcu-firmware/issues/784

I think currently your best bet is to build a firmware with "debug = false", ideally from the dev branch.

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Mark

Updated on June 04, 2022

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  • Mark
    Mark over 1 year

    I flashed the NodeMCU v0.9.5 to one of my ESP8266 modules. Now I'm trying to send a Lua script to my module using ESPlorer. I already double-checked the wiring.

    When I press the "Send to ESP" button, it shows an error:

        PORT OPEN 9600
    
        Communication with MCU...
        ....Got answer! AutoDetect firmware...
    
        Can't autodetect firmware, because proper answer not received.
        ����,�.,�����(�.,�����Waiting answer from ESP -   Timeout reached. Command aborted.`
    

    How can I fix this?

    Edit: After I flashed NodeMCU 1.4 (master) I get a startup message.

    _flash_used_end:402669c3
    fs.start:68000,max:14000
    mount res: 0
    Task task_lua started.
    SIG_LUA received.
    
    NodeMCU custom build by frightanic.com
        branch: master
        commit: c8037568571edb5c568c2f8231e4f8ce0683b883
        SSL: false
        modules: file,gpio,i2c,net,node,ow,tmr,uart,wifi
    build   built on: 2016-02-29 18:25
    powered by Lua 5.1.4 on SDK 1.4.0
    lua: cannot open init.lua
    > Heap size::42720.
    Task task_lua started.
    

    When I try to upload a Lua script I get these error messages.

    fTask task_lua started.
    iTask task_lua started.
    lTask task_lua started.
    eTask task_lua started.
    .Task task_lua started.
    remove("DS1820.lua");Task task_lua started.
    Task task_lua started.
    Task task_lua started.
    Task task_lua started.
    Waiting answer from ESP - Timeout reached. Command aborted.
    

    After flashing a new firmeware without debuging mode, I can upload scripts. I'm trying to build this project: http://www.instructables.com/id/Low-cost-WIFI-temperature-data-logger-based-on-ESP/?ALLSTEPS But there are no data on Thingspeak. The outputs on the serial line seem to be fine. I think, everything should be okay?

    Sending data to thingspeak.com
    Got disconnection...
    Last temp: 222500
    Temp:22.25.2500 C
    
  • Mark
    Mark over 7 years
    Thanks for the answer! Now, I can upload something! But I ran into another issue.
  • Marcel Stör
    Marcel Stör over 7 years
    Good, then you should upvote and/or accept this answer and ask a separate question for "another issue" ;-)