> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# SparkFun Mini Human Presence and Motion Sensor - STHS34PF80 (Qwiic)

**Type:** Product page · **SKU:** SEN-23253 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/sparkfun-mini-human-presence-and-motion-sensor-sths34pf80-qwiic.html ([markdown](https://core-electronics.com.au/sparkfun-mini-human-presence-and-motion-sensor-sths34pf80-qwiic.html.md))

The Qwiic Mini Human Presence and Motion Sensor is built around the STHS34PF80 low-power, high-sensitivity IR sensor for presence and motion detection...

## Pricing

- **Price:** $34.25 (inc GST) — $31.14 AUD, exc GST
- **Quantity discounts:** 5+ $30.20 (exc GST) · 25+ $29.58 (exc GST) · 100+ $28.34 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN-23253:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN-23253:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The SparkFun Qwiic Mini Human Presence and Motion Sensor is built around the STHS34PF80 Low-power, high-sensitivity infrared (IR) sensor for presence and motion detection from STMicroelectronics. This sensor features an infrared motion and presence detection sensor with an operating wavelength between 5µm and 20µm. This Mini-sized breakout board is only 0.5in. by 1in. big and has been equipped with two I2C Qwiic connectors to make interfacing with the STHS34PF80 a bit easier. It’s part of SparkFun’s Qwiic connect system, so you won’t have to do any soldering to figure out how things are oriented. However, Sparkfun still have broken out 0.1in.-spaced pins if you prefer to use a breadboard.

The STHS34PF80 sensor is designed to measure an object's precise [black-body radiation](https://en.wikipedia.org/wiki/Black-body_radiation) *(as described by [Plank's law](https://en.wikipedia.org/wiki/Planck%27s_law))* and monitor ambient temperature conditions within its 80° field of view. The sensor comprises a matrix of floating vacuum thermal transistors MOS split into two parts, one exposed to IR radiation and the other shielded. The differential reading between the segments allows the sensor to remove self-heating effects. The STHS34PF80 also incorporates algorithms to detect and discriminate between stationary and moving objects. These features enable the sensor to work as a human presence and motion sensor in different applications such as alarm systems, anti-intruder systems, smart lighting, and room occupancy.

The sensor can operate in multiple lighting conditions and is unaffected by visible light or other bands thanks to the 5 to 20µm optical band-pass filter. The STHS34PF80 has output data rates between 0.25 to 30Hz and an available single-shot, accessed through its I2C/SPI interface.

*The [SparkFun Qwiic Connect System](https://www.sparkfun.com/qwiic) 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.*

### Features

**Breakout Board**

- Dimensions: 1.0in. x 0.5in.
- Two Qwiic Connectors
    - I2C Address (7-bit): **0x5A (Default)**
- Two Mounting Holes:
    - 4-40 screw compatible
- Six PTH Pins
    - `3V3`, `GND`, `SCL`, `SDA`, `CS`, `INT`
- Power LED *(Red)*

**STHS34PF80 Features**

- Voltage Range: 1.7 to 3.6V
    - Current Draw: 10µA
- Interfaces: I²C or SPI
- Optical wavelength: 5 to 20µm
- Range: 4m *(objects 70 x 25cm² in size)*
- Built-in Detection Algorithms:
    - Identify stationary objects
    - Distinguish between stationary and moving objects
- Field of View: 80°
- Output Data Rate: 0.25 to 30Hz
- IR sensitivity: 2000 LSB/°C
- RMS noise: 25 LSBrms
- Operating Temperature: -40 to 85°C *(default gain mode)*
- Sensor accuracy: ±0.3°C *(local)*
- One-shot mode
- Factory calibrated

### Documents

- [Schematic](https://core-electronics.com.au/attachments/localcontent/schematic-mini_1499560dcf8.pdf)
- [Eagle Files](https://core-electronics.com.au/attachments/localcontent/eagle_files-mini_28141dbf66f.zip)
- [Board Dimensions](https://core-electronics.com.au/attachments/localcontent/dimensions-mini_4922153e8eb.pdf)
- [Arduino Library](https://github.com/sparkfun/SparkFun_STHS34PF80_Arduino_Library/tree/main)
- Component Datasheets:
    - [STHS34PF805 Product Page](https://www.st.com/en/mems-and-sensors/sths34pf80.html)
        - [STHS34PF805 Datasheet](https://core-electronics.com.au/attachments/localcontent/sths34pf80_22334058d7e.pdf)
- [Qwiic Info Page](https://www.sparkfun.com/qwiic)
- [GitHub Hardware Repo](https://github.com/sparkfun/SparkFun_Qwiic_Human_Presence_Sensor-STHS34PF80)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN-23253-1.jpg)