ESP8266 with 3.3VFTDI board . not working

Wireless & IoT Wifi
1

Trying to initially setup the ESP8266 board (WRL-13678) using a 3.3V FTDI board (DEV-09873). It seems like the COM port is active and I was able to load in all the ESP8266 board choices into the arduino IDE. I have selected “generic ESP8266” in the boards manager is that correct?. I believe I have all the settings right and correct pins connected. but no communications.

2

There’s a couple of pins that need jumpered together for you to be able to program these in Arduino. Make sure pins 2 and 6 are both connected to 3.3 volt power and see if that works for you. If you’re still having trouble, send some photos that clearly show how you have the board connected.

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3

I have it wired the way you describe it. I can upload sketches to it via the FTDI board OK. But I cannot communicate with the ESP8266 using AT commands in the terminal . I have the correct COM port and 115200 baud. When I want to use AT commands do I have to change the wiring someway?

4

No changes are needed for AT commands. What FTDI are you using? Does it supply 3.3 volt power and does it communicate at 3.3 volt logic levels?

If you’re still having trouble, send some photos that clearly show how you have the board connected.

5

TS-Chris:
No changes are needed for AT commands. What FTDI are you using? Does it supply 3.3 volt power and does it communicate at 3.3 volt logic levels?

If you’re still having trouble, send some photos that clearly show how you have the board connected.

3/28/20. attached is image of my hookup. please review. thanks . the two switches you see are normally open

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6

What’s your order number pyrce?

  • - I also don't see your FTDI's RX connected to anything. You won't see any responses from the 8266 without that.
  • - We've never tried a resistor to pull *CH_EN* high, try a jumper wire instead since that's a known good configuration.
  • - Try removing all your external circuitry except for what's absolutely needed to talk to the ESP8266 first and see if you're able to communicate that way. Once you establish communication, then you can add your external circuitry.
    • 7

    stripped everything down and rewired. by jumpering GPI00 to ground I can upload a blank sketch OK. But still no communication via serial monitor ( I disconnected GPI00).

    So I reconnected GPI00 and ran the flasher firmware again . It loaded just fine. I could again upload a blank sketch but still no communication via serial monitor. attached text file is the error messages I get at the bottom of the IDE after uploading a blank sketch and then resetting power to try the serial monitor. Maybe I am missing a library or have some java problem? Please advise and thanks for all the help throughout

    8

    flasher firmware I uploaded to ESP8266 is AiThinker_ESP8266_DIO_32M_32M_20160615_V1.5.4.bin

    9

    If you’re able to upload a sketch, communication is working. You might have the wrong baud rate set for the firmware you uploaded or you might not be sending the correct line termination when you press the enter key.

    I don’t happen to have a module available to test, but if memory serves me correctly the module works at 115200 baud and you need to send a carriage return and line feed with every press of the enter key. Your terminal emulator software should have an option to turn that on, and if you’re using the Arduino serial monitor, that can be set by selecting “Both NL & CR” at the bottom of the window.

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