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Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

== Summary ==
Technical overview of the Waveshare environment sensors module for the NVIDIA Jetson Nano Developer Kit. The module collects environmental data such as temperature, humidity, air pressure, ambient light, IR/UV and VOC via an I2C bus and displays values on an integrated OLED display.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL19486 WSAL19486 – Environment Sensors Module for Jetson Nano, I2C Bus, with 1.3inch OLED Display]

== Technical overview ==
* The module is tailored for the Jetson Nano Developer Kit and connects via an I2C bus using two wires.
* Integrated sensors: TSL2591FN (ambient light), BME280 (temperature, humidity, pressure), ICM20948 (9-axis motion sensor), LTR390-UV-1 (IR/UV) and SGP40 (VOC).
* A 1.3-inch OLED display (128x64 resolution, blue, SH1106 driver, I2C address 0x3C) shows environmental data in real time.
* The BME280 measures temperature from -40 to 85 °C (0.01 °C resolution, ±1 °C accuracy), humidity from 0 to 100 %RH (±3 %RH) and air pressure from 300 to 1100 hPa (±1 hPa).
* The ICM20948 provides 9 degrees of freedom: accelerometer (±2/4/8/16 g), gyroscope (±250/500/1000/2000 °/s) and magnetometer (±49 gauss), each with 16-bit resolution.
* The SGP40 VOC sensor measures 0 to 1,000 ppm ethanol equivalent; response time is under 10 s (tau 63 %) and start-up time under 60 s.
* Installation requires the packages python-smbus, python-pil and i2c-tools; the demo is downloaded via wget and started with sudo python test.py.
* A voltage level translator converts 5 V to 3.3 V for communication with the Jetson Nano.

'''Commands and examples – verify before use:'''
<syntaxhighlight lang="text">
sudo apt-get install python-smbus
sudo -H apt-get install python-pil
sudo apt-get install i2c-tools
sudo apt-get install p7zip-full
wget https://files.waveshare.com/upload/f/f5/Environment_sensor_fot_jetson_nano_rev3.zip
unzip Environment_sensor_fot_jetson_nano_rev3.zip
cd Environment_sensor_fot_jetson_nano
sudo python test.py
sudo python TSL2591.py
sudo python BME280.py
sudo python ICM20948.py
sudo python LTR390.py
sudo python3 SGP40.py
</syntaxhighlight>

== Notes and version constraints ==
* Demo rev3 may be faulty; the source recommends using the rev4 or rev5 version if problems occur.
* Measured temperature can be affected by heat dissipation from the Jetson Nano; adding a fan can help.
* The VOC sensor needs about one minute to stabilize because its internal heater warms up slowly.
* For use with the Jetson Xavier NX, the I2C bus must be changed from bus 1 to bus 8, which requires code modifications.
* The exact filenames of the individual sensor demos may vary by version; verify the directory structure before execution.

== Source and revision record ==
* [https://www.waveshare.com/wiki/Environment_Sensor_for_Jetson_Nano Environment Sensor for Jetson Nano - Waveshare Wiki]
* Source revision: 87394
* Captured: 2026-09-01T04:21:47+00:00
* SHA-256: <code>fec79fa025be2cb25e5689f023d429956dec661374402c99668c840834a766ef</code>

WSAL19486 – Environment Sensor for Jetson Nano/en - Versionsgeschichte

JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex