SparkFun Micro Temperature Sensor - STTS22H (Qwiic)

The SparkFun STTS22H Micro Temperature Sensor is a Qwiic-enabled breakout board based on the ultralow-power, high-accuracy, digital temperature sensor STTS22H from ST Microelectronics and housed in our Qwiic Micro form factor. Thanks to its factory calibration the STTS22H offers high-end accuracy performance over the entire operating temperature range, reaching as low as ±0.5°C without requiring any further calibration at the application level.

The sensor operating mode is user-configurable and allows selecting between different ODRs (down to 1Hz) or the one-shot mode for battery saving. In one-shot mode, the sensor current consumption falls to 1.75µA. Peripheral addresses are also user-configurable and allow up to four different addresses to be specified by manipulating the jumpers on the back of the breakout. In addition, an interrupt pin is available to signal the application whenever the user-selectable high or low threshold has been exceeded.

Hook-up is a breeze as the breakout board uses the Qwiic Connect System. The breakout board has built-in 2.2kΩ pullup resistors for I2C communications. If you’re hooking up multiple I2C devices on the same bus, you may want to disable these resistors.


The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.


  • Uses I2C interface (Qwiic-enabled)
  • Two selectable addresses
    • 0x3C (default),0x38
  • Operating temperature: -40°C to +125°C
  • Temperature accuracy (max): ± 0.5 °C (-10 °C to +60 °C)
  • Operating voltage: 1.5V to 3.6V
    • Typically 3.3V if using the Qwiic cable
  • Ultralow current: 1.75 µA in one-shot mode
  • Programmable thresholds with interrupt pin
  • Programmable operating modes
    • Freerun, one-shot, and Low-ODR
  • NIST traceability
  • Qwiic Micro Form Factor

SparkFun Micro Temperature Sensor - STTS22H (Qwiic) Product Help and Resources

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SparkFun Temperature Sensor - STTS22H (Qwiic) Hookup Guide

January 19, 2023

Get started with the ultralow-power, high-accuracy, qwiic-enabled SparkFun Temperature Sensor - STTS22H!

Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

2 Programming

Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Comments

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  • tlossen / last week / 1

    hey, this looks like a nice board ..... but why not put the sensor on the other side? so that the qwiic connector doesn't get in the way when i want to glue the sensor to a target surface.

    • Elias The Sparkiest / last week / 1

      You bring up a good point! You'll notice a bit of exposed pad on the underside that's connected directly to the sensing element of the IC. So that's what you'll want to adhere to the surface of the thing you're monitoring. I would love to take credit for it, but that's the way the sensor was designed.

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