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A web based setup and configuration module for your MicroPython projects on ESP8266.



How to use MicroSetup

The best way to learn how to use MicroSetup is to read

General use


Access Point SSID, password and IP address

The access point is named as defined in device_name during the initialization of the MicroSetup object. Password: setupnow


Connect your Wifi compatible device with the access point and enter the IP address into your browser to change the configuration.

Create configuration parameters

MicroSetup uses the Parameter object to store parameters and constraints.

Parameter accepts the following arguments:

  • param_name: The value for each parameter is loaded into a dict with this value as it's key

  • display_name: This is the name of the parameter that is shown on the configuration web page

  • param_type: The data type of your parameter. Default is MicroSetup.PARAMETER_STRING additional supported values are:

    • MicroSetup.PARAMETER_FLOAT

    • MicroSetup.PARAMETER_INT

    • MicroSetup.PARAMETER_BOOL

  • decimals: The number of decimals for float types default: 0

  • min: The lowest allowed value for int and float types

  • max: The highest allowed value for int and float types

Put all your configuration parametes into a list. This list is later passed to MicroSetup.

Using the MicroSetup object

Only import MicroSetup where needed to avoid unnessecary memory use.

Create an instance of MicroSetup using the follwoing parameters:

  • device_settings: A list of parameters, as described in the previous section

  • device_name: This name is used as the SSID of the device

  • callback: A function that accepts 1 parameter (a dict with all your settings).

    This function is called after the settings where loaded.

  • debug: Set debug to True to regenerate the HTML files and ignore and overwrite the stored settings. This can be used during development or to reset the devices configuration.

Your settings.cfg file will be loaded automatically if it is present duriong initialization.

Adding a custom validator for your configuration

You can validate the configuration before it is stored by setting a validator.

Assuming your instance of MicroSetup is called ms you can set your validator function using ms.validator = function_name before you start the server.

You validator has to accept a dict as an argument (this will contain the configuration for you to validate) and return True when the validation was successfull or False when the validation failed.

The server is shutdown during validation, so you can freely use wifi during your validation, as long as you disable it after your use.

Starting the server

Assuming your MicroSetup object is called ms call ms.start_server(), this call is blocking.

I strongly advice to follow the section about memory efficiency or you will run yourself out of memory very easily!

Best practices for memory efficiency

Only import MicroSetup when it's needed and run gc.collect() when it isn't in use anymore. Take a look at for an efficient example.

Call the following after MicroSetup.start_server():

# ms would be your MicroSetup object
del MicroSetup
from sys import modules
del modules["MicroSetup"]
gc.collect() # Use to learn where to put this

MicroSetup only requires a lot of memory (about 25-30KB) when it generates a new config file. Reading an existing configuration only uses around 8KB of RAM.

How to install MicroSetup on the ESP8266

Step 1: Precompile the module and it's dependency

(You can skip this part if you downloaded the precompiled libraries)

  1. Install mpy-cross if you don't have it already:

    pip install mpy-cross

    You might need to use pip3 in replacement of pip depending on your operating system.

  2. Clone this repository and cd into it's directory:

    git clone; cd MicroSetup

  3. Compile the included version of MicroWebSrv and MicroSetup:

    Note that MicroSetup uses a heavily modified version of MicroWebSrv, the original version is incompatible to MicroSetup on ESP8266

    python -m mpy_cross -march=xtensa
    python -m mpy_cross -march=xtensa

    If you are not using Windows, replace pythonwith python3

Step 2: Copy the module to your ESP

Copy MicroSetup.mpy, microWebSrv.mpy and the www/-directory and it's contents to your ESP with your tool of choice.

I use ampy for this purpose:

ampy -p <port> put MicroSetup.mpy
ampy -p <port> put microWebSrv.mpy
ampy -p <port> put www/

Do not forget the www folder, it is very important!

Step 3: Ready to use

You can now use MicroSetup like you would use any other module

MicroSetup on other devices

MicroSetup has only been tested on ESP8266, other devices might be compatible.


MicroSetup should be compatible to ESP32, I will test this as soon as possible. I would expect the performance to be quite a bit better than on the ESP8266


MicroSetup is built on a heavily customized version of MicroWebSrv by jczic (Jean-Christophe Bos) licensed under the MIT License (included as MicroWebSrv

I removed _threading, lots of unused getters, everything in connection to pyhtml-templates and some more unused functions from MicroWebSrv to safe memory, modified _serverProcess() and Stop() and added better Exception handling to WriteResponseFilefor debugging purposes.