SHT30 temperature sensor
??? tip "This feature is included only in tasmota-sensors and tasmota32 binaries"
When [compiling your build](Compile-your-build) add the following to `user_config_override.h`:
```c++
#ifndef USE_SHT3X
#define USE_SHT3X // [I2cDriver15] Enable SHT3x (I2C address 0x44 or 0x45) or SHTC3 (I2C address 0x70) sensor (+0k7 code)
#endif
```
Wemos SHT30 Shield High Precision Humidity & Temperature (I2C) sensor
From the Wemos SHT30 shield specs the SDA pin on the SHT30 shield is connected to D2 and the SCL pin to D1.
Configuration
As a default the SHT30 uses I2C address 0x45 and is user changeable by short-circuiting 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.
Note: On the v2.1.0 board these pads are on the rear.
Tasmota Settings
In the Configuration -> Configure Module page assign:
- D2 GPIO4 to
I2C SDA - D1 GPIO5 to
I2C SCL
After reboot of the device the temperature, humidity and dew point are displayed.
Breakout Boards
Three versions are known to exist, they all share the same pinout. Lolin is the new name for Wemos going forward.
- v.1.0.0 - original design (retired)
- v.2.0.0 - detachable design
- v.2.1.0 - detachable design with TFT I2C connector
