lllluo / dht22

RaspberryPi temp and humidity sensor DHT22

DHT22

python script for my dht22 sensor

coming soon

• Sensor class
• ORM with peewee
• failure log

database

In this project I'm using a new ORM lib called peewee.

It's lighter than SQLAlchemy.

Setup

Install packages

sudo apt-get install mysql-server mysql-client php5-mysql libmysqlclient-dev

pip install MySQL-python peewee

Now you can import the peewee lib in your python project.

How can I use my sensor on a raspberry pi?

Hardware

I'm using a Type: Pi 2, Revision: 01, Memory: 1024MB, Maker: Sony and a 100k Ohm resistor.

Breadboard connection:

Software

Install packages

sudo apt-get install build-essential python-dev python-openssl git

Get Adafruit lib from github

git clone https://github.com/adafruit/Adafruit_Python_DHT.git && cd Adafruit_Python_DHT
sudo python setup.py install

Test your sensor

cd examples
sudo ./AdafruitDHT.py 22 4