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Contents

  1. Package Summary
    1. Requirements
    2. Install the package
    3. How to use
    4. Run it

Package Summary

A package to read voltage from Phidgets's analog and digital channels.

Requirements

Phidgets Library: https://www.phidgets.com/docs/OS_-_Linux

Phidgets Python Module: https://www.phidgets.com/docs/Language_-_Python

Install the package

Open the terminal on your catkin workspace and type 

$ cd src
$ git clone https://github.com/lumoreno17/phidgets_interface
$ cd ..
$ catkin_make

How to use

On src/Phidgets_Interface.py you can publish each sensor data to a specific topic, specify the name of the sensor and the channel mode (analog or digital). On the end of the script you will find the following examples: 

monitor_0 = PhidgetMonitor(0, 'SENSOR_NAME','ANALOG0','ANALOG')
monitor_0.setup()
monitor_1 = PhidgetMonitor(1, 'SENSOR_NAME2','ANALOG1','ANALOG')
monitor_1.setup()
monitor_2 = PhidgetMonitor(0, 'SENSOR_NAME3','DIGITAL0','DIGITAL')
monitor_2.setup()

monitor_0 is an object of the class PhidgetMonitor that receives as parameters:

1. Channel number

2. Name of the sensor connect to the channel

3. Name of the topic to publish the data

4. Channel mode (ANALOG or DIGITAL)

Its necessary to call the method setup to work properly. You need to copy and paste the constructor and the setup method to each channel you desire to read the voltage.

Don't forget to save the changes!

Run it

Inside your catkin workspace write the following command 

rosrun phidgets_interface Phidgets_Interface.py

See the topics being used 

rostopic list

Read the data 

rostopic echo <NAME_OF_THE_TOPIC>

2022-05-28 12:50