fhlthermorasp

Scripts for environmental monitoring with a Raspberry Pi.

Supported sensors

• DS18S20 temperature sensor
• DHT11 temperature and humidity sensor
• SHT2x temperature and humidity sensor
• SHT7x temperature and humidity sensor
• BME280 temperature, humidity and pressure sensor
• BME680 temperature, humidity, pressure and air quality sensor

Single measurements with python

Usage:

• python3 w1_temp.py for DS18S20
• python3 dht11.py for DHT11
• python3 sht21.py for SHT2x
• python3 sht75.py for SHT7x
• python3 bme280.py for BME280
• python3 bme680.py for BME680

Other tools/files:

• example_sensor.py is an example file
• python3 graph.py does some simple analysis (ROOT required)
• sh initi2c.sh can be used to reset the i2c bus after an error
• python3 make_image.py can be used for picture taking with a connected web cam
• README.md is this file

Continuous measurements with python

Usage:

• python3 sensor_monitor.py --<sensors> --dir <directory> for continuous read-out, results are saved to <directory>
• python3 sensor_monitor_gui.py contains a GUI
• python3 server.py <file> reports the current measurement status to a TCP client

C++ implementation

Still under development

• You can compile monitor.cc for a continuous measurement of some sensors

System Services

Automatically start sensor_monitor.py and server.py at boot or when the processes crash

The files sensor_monitor.service and sensor_server.service must be copied to /etc/systemd/system

Enable the services (services start during boot)

• systemctl enable sensor_monitor
• systemctl enable sensor_server

Start the services

• systemctl start sensor_monitor
• systemctl start sensor_server

Stop the services

• systemctl stop sensor_monitor
• systemctl stop sensor_server