https://github.com/apexskier/am2302

Python module for the AM2302 temperature/humidity sensor on a Raspberry Pi.
https://github.com/apexskier/am2302

am2302 humidity-sensor iot raspberry-pi sensor temperature-sensor

Last synced: about 6 hours ago
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Python module for the AM2302 temperature/humidity sensor on a Raspberry Pi.

• Host: GitHub
• URL: https://github.com/apexskier/am2302
• Owner: apexskier
• Created: 2014-02-05T20:35:36.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2017-01-06T17:03:14.000Z (almost 8 years ago)
• Last Synced: 2024-10-31T22:47:21.477Z (7 days ago)
• Topics: am2302, humidity-sensor, iot, raspberry-pi, sensor, temperature-sensor
• Language: C
• Homepage:
• Size: 215 KB
• Stars: 11
• Watchers: 3
• Forks: 6
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# Python DHT-Raspberry Pi module

This module enables access to the [AM2302 wired digital temperature and

humidity sensor](https://www.adafruit.com/products/393) from a Raspberry Pi.

It's been adapted from [Adafruit's C

code](http://learn.adafruit.com/dht-humidity-sensing-on-raspberry-pi-with-gdocs-logging/software-install).

It may work with both the DHT11 and DHT22 sensors as well, though this is

untested.

Get it with `pip install am2302_rpi`. The [BCM2835 C

Library](http://www.open.com.au/mikem/bcm2835/index.html) is required and the

root user must be used to access the GPIO pins.

## am2302_ths

Both methods return floats, or None if the sensor can't be read. The sensor

can only be read once every few seconds.

### get_temperature(pin)

Reads the current temperature from a sensor attached to the specified pin.

### get_humidity(pin)

Reads the current humidity from a sensor attached to the specified pin.

## am2302_rpi

This module provides a class *Sensor* which periodically polls the sensor

to keep track of the current temperature without waiting for it.

It has the following methods available.

### __init__(pin)

Create a new sensor object instance with `s = am2302_rpi.Sensor(4)`.

### get()

Get the last read temperature.

### get_last_time()

Get the time of the last successful read.

### off()

Turn the timer off by cancelling it's internal ticker. Make sure you call this

before exiting.

## TODO

Clean up the sensor object properly.