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Sensirion-SmartGadget

Python library for reading temperature, humidity, and battery level from a SHT31 Smart Gadget Development Kit by Sensirion.

Supported features

• Direct reading of SHT31 sensor values and device battery level.
• Subscription to notifications on value changes.
• Output of manufacturer, model name, and firmware version.

Currently not supported

• Downloading data from the integrated data logger.
• Setup of data logger interval.

Installation

pip install sensirion-smartgadget

Usage

from sensirionbt import SmartGadget

sensor = SmartGadget('CA:FE:12:34:56:78')
print(sensor.get_values(init_static=True))
# 'init_static' is optional; it fetches following values immediately.
print("Manufacturer:", sensor.manufacturer)
print("Model:", sensor.model)
print("Firmware:", sensor.firmware_version)

Notes

• The device only allows one connection at a time. If the connection keeps failing, make sure you have disconnected other services, e.g. the smartphone app.
• On a connection failure, transmission will be re-attempted, depending on the 'retries' argument or property. The default is to retry twice.
• The first connection and value readings take a few seconds. The reason for this is that characteristics are discovered by UUID, then handles are cached and reused for subsequent calls.