ESP8266 F.A.Q.

When I connect stuff to some of the pins, the Huzzah stops working. Whats up with that?

The ESP8266 uses some of the pins as 'boot mode' pins so on boot they must be set to certain values:

CH_PD (EN) should be always pulled high (it will disable the entire module if low)

RST should be always pulled high (it will disable the entire module if low)

GPIO 0 sets whether the bootloader is active, it must be pulled HIGH during power up/reset for the user

program to run. If it's pulled LOW, it will activate the bootloader. The built-in red LED on #0 pulls it up

GPIO 2 must be pulled high on power up/reset.

GPIO 15 must be pulled low on power up/reset.

My Huzzah board keeps crashing and resetting, whats up with that?

The most common reason for crashes is power failure. Make sure you're powering the Huzzah with a good ~5V

power supply, and if you're using a USB-Serial cable, that it's plugged into the mainboard of your computer or

through a powered hub!

I can't seem to find the Serial port on my computer for the Feather HUZZAH?

Don't forget to install the CP2104 VCP drivers for your computer, they are required!

I still can't seem to find the Serial port on my computer for the Feather Huzzah!

Many cheap electronics come with charge-only USB cables, which cause headaches later. Make sure you are using

a proper data/sync USB cable. If you find a cable that is charge-only (not data/sync also) throw it out so you don't

have the same problem again.

So, I’m getting a 'no such file' error compiling for ESP8266 on my Mac

If your error message looks like this:

fork/exec /Users/xxxxxxx/Library/Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-

2/bin/xtensa-lx106-elf-g++: no such file or directory

Error compiling.

To fix this problem, do this:

1. Open the Boards Manager in the Arduino IDE

2. Uninstall the ESP8266 support

3. go to your ~LIbrary folder (in the Finder, select "Go::Go to folder:, and enter ~Library ). Find the folder

Arduino15.

4. In the Arduino15 folder, go into packages, and delete the folderesp8266

5. Go back to the Arduino IDE, and install ESP8266 board support.

6. Now go back to the Finder, and check that you have the xtensa-lx106-elf-g++ file in the

path

Arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++

7. That's it!

Whenever I start or reset the ESP8226 there's a bunch of "gibberish" on the Serial console

This is the ROM debug messages, it's transmitted at 74880 baud so you rarely see it in proper 'ascii output' - instead

usually it gets corrupted into a bunch of strange characters.

I'm having difficulties uploading to the HUZZAH with the Arduino IDE

Make sure you're using a good quality USB/Serial cable. Install the official drivers for that cable too! We've also

© Adafruit Industries

https://learn.adafruit.com/adafruit-feather-huzzah-esp8266

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