Sensors

SHT30

Accurate I2C temperature and humidity sensor widely used in weather stations and environmental nodes.

China-madeSensirionActiveEasy

Best For

Projects needing High accuracy and I2C with a commonly available sensors part.

Avoid If

You need production-grade certainty without checking the exact module vendor, pinout, and library maintenance status.

Quick Decision Notes

SHT30 is indexed as a sensors part from Sensirion. ChipScout tracks it by practical maker-facing dimensions: interfaces, library readiness, estimated price, field-level sources, and whether the page is strong enough for selection rather than only lookup.

Technical Specifications

MeasurementTemperature + humiditySource: Sensirion
InterfaceI2CSource: Sensirion
AccuracyHighSource: Sensirion
Working Voltage2.4V - 5.5VSource: Sensirion

Common Use Cases

  • Maker prototypes
  • Low-cost modules
  • Educational hardware

Known Issues

  • Breakout boards may use different pin labels or regulator choices
  • Clone modules can differ from the original datasheet part

Interfaces and Library Support

Interfaces
I2C
Wireless
None
Voltage
3.3V
Libraries
Arduino verifiedMicroPython verified
Data Integrity88% confidence
Sourcehttps://sensirion.com/
Last verified2026-05-20
Core specsVerified
PinoutAvailable
Library supportChecked
Price rangePresent
Found a wrong spec?

Every field is meant to be source-backed. Corrections should include a datasheet URL, vendor page, module photo, or reproducible library test.

Submit correction

Source Resources

Pinout Table

VCC3.3VPower the module from a rail that matches the breakout board, not just the bare IC.
GNDCommon groundConnect ground between the controller, sensor/module, and external power supply.
SDAMCU I2C dataUse pull-ups appropriate for the board voltage; many modules already include them.
SCLMCU I2C clockKeep wiring short for breadboard prototypes and lower bus speed if unstable.

Pinout is not yet source-verified. Use the table as an integration checklist, then confirm exact pins against the module vendor page before wiring hardware.

Common Wiring

VCC

Power the module from a rail that matches the breakout board, not just the bare IC.

GND

Connect ground between the controller, sensor/module, and external power supply.

SDA

Use pull-ups appropriate for the board voltage; many modules already include them.

SCL

Keep wiring short for breadboard prototypes and lower bus speed if unstable.

Arduino Example

#include <Wire.h>

void setup() {
  Serial.begin(115200);
  Wire.begin();
  Serial.println("SHT30 I2C wiring smoke test");
}

void loop() {
  // Replace this with the maintained SHT30 library call.
  Serial.println("Check SHT30 on the I2C bus, then read a sample.");
  delay(1000);
}

MicroPython Example

from machine import Pin, I2C
import time

i2c = I2C(0, scl=Pin(1), sda=Pin(0), freq=100000)
print("SHT30 I2C devices:", i2c.scan())

while True:
    # Replace with the maintained SHT30 driver call.
    print("read SHT30 sample")
    time.sleep(1)

Recommended Development Boards

ESP32-C3 development board

Low-cost Wi-Fi/BLE board with enough interfaces for most sensors and modules.

Arduino Uno R4 / compatible

Good baseline for beginner wiring and library validation.

Raspberry Pi Pico W

Practical MicroPython target for I2C, SPI, UART, PWM, and ADC experiments.

Alternative Model Reasons

ACS712SensorsCompare this option when price or module availability is the deciding constraint.
ADXL345SensorsCompare this option when price or module availability is the deciding constraint.
AHT10SensorsCompare this option when price or module availability is the deciding constraint.
AHT20SensorsCompare this option when price or module availability is the deciding constraint.

Common Questions

What is SHT30 best used for?

Projects needing High accuracy and I2C with a commonly available sensors part.

Does SHT30 support Arduino or MicroPython?

SHT30 has verified Arduino support and verified MicroPython support.

What interfaces does SHT30 use?

SHT30 lists I2C; wireless support is no wireless protocol.

Compare SHT30 vs ACS712

Alternatives and Related Parts