S0tool Installation

Easily install and configure your S0tool for Home Assistant and ESPHome.

Installation Guide

Before proceeding, ensure you have installed the necessary drivers for the Wemos D1 to communicate with your PC or laptop. Refer to the troubleshooting page for details.

Connect the S0tool to your PC or laptop using a USB cable that supports both power and data transfer. Use the button below to install the S0tool firmware directly to your device via USB from your browser.

Installation

Follow these steps to install the firmware on your S0tool:

Click the blue connect button below; a pop-up window will appear with a list of available USB devices.
Plug the USB cable into the ESP and connect it to your computer.
Select the USB serial port and click Connect.
Choose Install S0tool, then click Install.
If the installation fails, hold down the boot button and try again.
Once completed, click Next.

After installation, connect the S0tool to your Wi-Fi network:

Select your network from the list and enter your 2.4 GHz Wi-Fi credentials.
Click Connect.

Congratulations 🎉 The S0tool is now connected to your network!

Standard Configurations

S0tool Standard

Standard with watermeter (NPN) and kWh meter (50-100ms).

Select

S0tool Watermeter

Configuration for watermeter (NPN).

Select

S0tool kWh Meter

Configuration for kWh meter with 50-100ms impulses.

Select

Special Configurations

S0tool DSZ12D

Special configuration for DSZ12D meters.

Select

S0tool LEM022SJ

Special configuration for LEM022SJ meters with 400 impulses.

Select

No image available for this configuration

S0tool Flux and Puls

Special configuration for flux and puls meters.

Select

S0tool wsz15d32a & water

Special configuration for wsz15d32a & water

Select

S0tool sdm72d & water

Special configuration for sdm72d & water

Select

S0tool s0-watermeter

Special configuration for s0-watermeter.

Select

S0tool puls water internal

Special for the kwh and watermeter(npn) with Internal resistor in the code
D2 & D5

Select

S0tool KWH and Water Test

Special configuration for testing KWH and water meters (NPN) with debug mode enabled on D2 & D5.

Select

S0tool standard-flux

s0tool-standard-flux sensor like the Dekaim Flussostato Acqua

Select

Connect to Home Assistant

Option 1: During Firmware Installation

After setting up your Wi-Fi, you will see an option to add the S0tool to Home Assistant. Follow the link to configure it.

Option 2: Auto Discovery

If your Home Assistant instance is on the same network, the S0tool will be automatically discovered under Settings > Devices & Services.