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Thread: Who has ESP8266 (WiFi) working with Teensy 4.0?

  1. #1
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    Who has ESP8266 (WiFi) working with Teensy 4.0?

    I did search this forum for this, but didn't see any definitive guide or results.

    Looks like for a few dollars more I can add a WiFi to my setup.
    If anybody has it working with Teensy 4.0, please share your experience: your diagram, libraries, power consumption, noise interference, general experience.

    Thanks.

  2. #2
    Senior Member+ Frank B's Avatar
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    Some time ago I just connected them via serial and flashed the AT-Firmware (a modem emulation) to the ESP.

  3. #3
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    More important than firmware is a nice T4 add-on board that attaches cleanly without wires. But I'd favor the ESP32 or maybe the ESP32-S2.

  4. #4
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    Ok, thanks. I guess I'll just connect it and see how it goes. It it works, I may ditch the Bluetooth in favor of WiFi.

  5. #5
    Senior Member+ defragster's Avatar
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    Wow - so long ago ... Latest commit on Dec 11, 2016

    This was used to use Teensy to pass through Serial as Arduino programmer for the ESP8266 - then share data with ESP over serial when running: github.com/Defragster/ArduinoTeensyESP8266

    Make sure the ESP has good power or it can't program if its input voltage drops.

  6. #6
    Senior Member+ MichaelMeissner's Avatar
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    Cool

    Quote Originally Posted by jonr View Post
    More important than firmware is a nice T4 add-on board that attaches cleanly without wires. But I'd favor the ESP32 or maybe the ESP32-S2.
    Well one possibility is the Adafruit Airlift featherwing + Adafruit Teensy->Feather adapter. Note, I haven't used the Airlift, but I have used the feather adapter. You would have to do basic through hole soldering to join the pins.


    From the example page, it looks like it uses the following Teensy pins:
    • VUSB -- USB power
    • 3.3v -- Normal 3.3v power
    • Ground -- Ground pin
    • Pin 0 (RX1) -- AirLift firmware upload (must join a solder jumper to use)
    • Pin 1 (TX1) -- AirLift firmware upload (must join a solder jumper to use)
    • Pin 5 -- AirLift CS pin
    • Pin 6 -- AirLift Reset pin
    • Pin 9 -- AirLift busy pin
    • Pin 10 -- AirLift GPIO 0 pin (used to put the ESP32 into bootloading mode if you soldered the jumper)
    • Pin 11 -- SPI MOSI
    • Pin 12 -- SPI MISO
    • Pin 13 -- SPI SCLK

  7. #7
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    Thanks guys.

    I found this: http://www.digikey.com/product-detai...9-1-ND/8544304
    It's $2.70, which is important because I want to sell my "super awesome sound processor" and keep the cost low.
    And it looks like it has all what's needed.

    If I get it working, I'll let you know. And even more so if I don't (ha).

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