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Newbie here.

I got as far as connecting the OpenEvse WiFi to my house router ... could see the system charging.  Yippee!

Then I must have done something wrong (not that I know what I did) because my web browser now can't get to the charger.  Browser says:

      Log in to 198.168.222.114:80   <this was assigned by my router

         ,/ Username

         ./ Password

I've tried admin / admin,   openevse / openevse , and a lot of combinations and other stuff.  Nada.

So how do I reset the WiFi module back to factory default?  

Thanks!   -Cliff

Saga continues:   With the programmer disconnected from the wifi board, the programmer's bright red led is always on, and a blue led flashes during while the esptool commands are being executed.

With the programmer connected to the wifi board, the programmer's bright red led is always on, but the blue led does not flash while the esptool commands are being executed.

In both cases, I get the same error message: 

Connecting........_____....._____....._____....._____....._____....._____....._____....._____....._____....._____

A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header

The wifi board blue led flashes dimly about once a second.   A red led lights up brightly when the gpio0 button is pressed.  When the reset button is pressed at the same time as the GPIO0 button, the red led lights dimly.  

the "chip_id" command has the same result:

python esptool.py --port=/dev/tty.SLAB_USBtoUART -b 1500000 chip_id

Additional information: [7:30 to 8:30AM April 10]

   On suggestion from https://github.com/espressif/arduino-esp32/issues/370  

I have downloaded and installed Silicon Labs VCP Driver from 

     https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers

This, of course, required security over-ride, since it was not a signed piece of software.

Now, after rebooting the macintosh, I can see:

Cliffs-iMac:esptool-2.3.1 cliff$ ls /dev/tty.*

/dev/tty.Bluetooth-Incoming-Port /dev/tty.SLAB_USBtoUART

That port,  /dev/tty.SLAB_USBtoUART  

apparently must be passed to esptool as follows:

python esptool.py --port=/dev/tty.SLAB_USBtoUART  -b 1500000 erase_flash

However, at this point, I receive the following error:

Cliffs-iMac:esptool-2.3.1 cliff$ python esptool.py --port=/dev/tty.SLAB_USBtoUART  -b 1500000 erase_flash

esptool.py v2.3.1

Connecting........_____....._____....._____....._____....._____....._____....._____....._____....._____....._____

A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header

(Yes, I did press the "GPIO0 button" and the "reset" button on the wifi card)

To be continued...

Thanks Christopher.  Here's what I"m doing:

 4PM, opened Openevse, brought lid with Wifi module to my office, plugged into Mac, as per instructions.  Easy.

 4:10PM, went to GitHub.com/esspressif/esptool.  Downloaded and expanded folder " esptool-2.3.1 " onto my OSX desktop.

Opened terminal window.  Typed esptool.py -b 1500000 erase_flash   

response:   Could not find a version that satisfies the requirement esptool (from versions: )

No matching distribution found for esptool

ok, maybe i'm in the wrong directory.

within terminal:

 cd/desktop/esptool-2.3.1

Cliffs-iMac:esptool-2.3.1 cliff$ pwd

/Users/cliff/desktop/esptool-2.3.1

Cliffs-iMac:esptool-2.3.1 cliff$ ls

LICENSE MANIFEST.in PKG-INFO README.md espefuse.py espsecure.py esptool.egg-info esptool.py setup.cfg setup.py

Cliffs-iMac:esptool-2.3.1 cliff$ esptool.py -b 1500000 erase_flash

-bash: esptool.py: command not found

Cliffs-iMac:esptool-2.3.1 cliff$ 

Maybe I must type Python esptool?

Cliffs-iMac:esptool-2.3.1 cliff$ python esptool.py -b 1500000 erase_flash

Traceback (most recent call last):

  File "esptool.py", line 34, in <module>

    import serial

ImportError: No module named serial

4:30 PM:  from Stack Overflow, suggestion that I must install "PYSERIAL"

Cliffs-iMac:esptool-2.3.1 cliff$ pip install pyserial

Collecting pyserial

  Cache entry deserialization failed, entry ignored

  Could not find a version that satisfies the requirement pyserial (from versions: )

No matching distribution found for pyserial

try again:

Cliffs-iMac:esptool-2.3.1 cliff$ sudo easy_install pyserial

Password:

Searching for pyserial

Reading https://pypi.python.org/simple/pyserial/

Couldn't find index page for 'pyserial' (maybe misspelled?)

Scanning index of all packages (this may take a while)

Reading https://pypi.python.org/simple/

No local packages or working download links found for pyserial

error: Could not find suitable distribution for Requirement.parse('pyserial')

Another suggestion, this from reddit:

Cliffs-iMac:esptool-2.3.1 cliff$ python -m pip install pyserial

Collecting pyserial

  Cache entry deserialization failed, entry ignored

  Could not find a version that satisfies the requirement pyserial (from versions: )

No matching distribution found for pyserial

Please excuse the following newbie questions. 

  I realize that these are laughably ignorant questions.  However, I am laughably ignorant, and have wasted several hours reading much openevse documentation and not understanding what I should do.  At this moment, I feel incredibly stupid.

   I wish to reset the WiFi password on my OpenEvse unit. 

   In hopes of doing so, and following instructions above, I ordered the "programming module" from the ease store.  The package arrived early today.

    Two USB dongles arrived, along with three short cables.  

    USB Dongle 1 came in envelope marked "USBTTL" but says "USBASP V2.0" on the long blue board ("A - B" in photo below)

    USB Dongle 2 came in envelope marked "ISP" .   It is white, almost square board with no markings. ("D - E" in photo below)

   Cable 1 is gray ribbon cable, which came plugged into Dongle 1.  ("B - C" in photo below)

   Cable 2 is 4 wire assembly, which cam plugged into Dongle 2.   ("E - F" in photo below)

   Cable 3 is 5 wire assembly, which has a 10 pin connector at one end, and a 6 pin connector at the other. ("G - H" in photo below)

   I do not know what to do now.  I don't know if I should program the EVSE main board.  Or maybe I should program the WiFi module.  

   I own a Macintosh, running OSX.

   The OpenEvse system is mounted about fifty feet away from my computer.

   Should I dismount the EVSE from the exterior of my house, bring it into my shop, remove the board from the EVSE (which board??) and plug it into the USB programer (which one?) (Which connection?)

    Or should I borrow my son's laptop Macintosh computer and program the EVSE at the side of the house (same set of questions - which plug to connect to what cable to what programmer?)

    Closely related to these questions: 

   At "How to load OpenEVSE firmware (WinAVR),  I have found a pointer to the file "open_evse.hex" , Version 4.8.0.  I have downloaded this to my Macintosh.  There are extensive instructions for how to use this file for a Windows computer.  But I do not know how to send this file to the programmer.  (Again, Which programmer?  What should I connect it to?  Should I use OSX "Terminal" commands?  If so, which ones?).

I'm sorry that my questions are so ignorant and basic.  It's not because I haven't spent a long time reading EVSE documentation.  

The Wifi module should not have any HTTP password by default. Are you sure you didn't set a password by accident? I'm afraid the only way to reset it is by clearing the EEPROM of the WiFi module. A programmer is required for this. This is a known issue please +1 the open issue https://github.com/OpenEVSE/ESP8266_WiFi_v2.x/issues/137

and yes, as per instructions, I've tried    username  admin   pw  openevse

no luck.

Here's where I'm stuck...   any suggestions?

Note:  Pressing RESET button on the Huzzah wifi board does NOT clear the problem.