python-anopi 0.1.1

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python-anopi

General

This is a library for the implementation of the AnoPi Header in a python environment

https://shop.frappgmbh.de/AnoPi-Raspberry-Header

Installation

pip install python-anopi

Get started

The most important thing is, that you need to activate I2C on Raspberry Pi

For further Information have a look at that link https://www.raspberrypi-spy.co.uk/2014/11/enabling-the-i2c-interface-on-the-raspberry-pi/

Usage

Read analog input current loop e.g. (4 - 20mA)

This code example is for the usage of a current loop sensor. The sensor offset can range from 0-3.

from python_anopi import AnoPi

a = AnoPi()

value, err = a.ai_mA(0) # For Analog Input 0
print('AI 0: {value}mA'.format(value=value))

Read analog input voltage e.g. (0 - 10V)

from python_anopi import AnoPi

a = AnoPi()

value, err = a.ai_V(0) # For Analog Input 0
print('AI 0: {value}V'.format(value=value))

Analog input scaling

In most applications current loop representing a scale from a sensor e.g., a level meter for a tank. For this application we provided a simple function which lets you scale your measurements

from python_anopi import AnoPi
from python_anopi import AnalogInputType 

a = AnoPi()

value, err = a.ai_V(0) # For Analog Input 0

value, err = a.scale_value(AnalogInputType.mA_4_20, value, min=0, max=100)

print('level: {value}% '.format(value=value))

Electrical wiring

!!!Warning!!! Industrial level voltages and currents can be hazardous, only assemble this if you are a trained expert and know what you are doing.

Current loop

Voltage measurement

License

Distributed under the MIT License. See LICENSE.txt for more information.

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Contact

[e-mail]

Project Link: https://github.com/AndreasScharf/python-anopi

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