Wemos D1 Mini and SHT30 Shield High Precision Humidity & Temperature - stodev-com-br/Tasmota GitHub Wiki

SHT30 Shield High Precision Humidity & Temperature (I2C)

From the Wemos SHT30 shield specs the SDA pin on the SHT30 shield is connected to D2 and the SCL pin to D1.

Note: v1.0.0 is retired, but v2.0.0 has the same pining.

I2C address & Biasing SDA / SDA

As per default the sht30 uses I2C address 0x45 and is user changeable by short-circuit the two soldering pads at the lower left-side of the sensor (see image below marked green).

Also if no other I2C devices are connected to the Wemos it might be wise to short-circuit the three soldering pads at the upper left-side of the sensor (see image below marked red). This connects the pull-up resistors for I2C and biases the SCL and SDA pins to VCC. This is to avoid possible false detections of other sensors like VEML6070.

Tasmota Configuration

In the Configuration -> Configure Module page, select the following:

  • D2 GPIO4 : 06 I2C SDA
  • D1 GPIO5 : 05 I2C SCL

Tasmota Main

After reboot of the device the temperature and humidity are displayed.

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