How I solved a problem I found when trying to control my new blinkstick nano with Python
Hosted by MrX on 2016-08-04 is flagged as Clean and is released under a CC-BY-SA license.
Tags: Hardware, Electronics, Programming, Raspberry pi, python, open source, BlinkStick.
Listen in ogg,
mp3 format. | Comments (1)
This is a show describing how I solved a problem of using my new Blinkstick Nano in Python, the problem occurred because I inadvertently installed the blinkstick module to the wrong version of Python as I have multiple versions of python installed on my raspberry pi.
A blinkstick is a USB powered device with attached RGB led’s, it can be controlled using a wide range of languages, and supports the Raspberry Pi, Linux, Microsoft Windows & Apple
As a side note I forgot to mention that the blinkstick hardware and software is Open Source
Initially I blindly followed the advice given at https://www.blinkstick.com/help/raspberry-pi-integration which recommended the following commands
sudo apt-get install -y python-pip python2.7-dev
sudo pip install blinkstick
sudo blinkstick --info
I discovered that the blinkstick module was not being found when I ran my python script, this turned out to be because I was invoking a different version of python in my script from that which I installed the blinkstick module. I installed the blinkstick module to Python 2.7, my script was running python 3.2
I ran the following commands to rectify the problem
sudo apt-get install -y python3-pip
sudo pip-3.2 install blinkstick
sudo blinkstick --info (Run in my script)
blinkstick --add-udev-rule (Not required 2nd time round)
Here are some links I looked at to get some understanding of what was going on
You can get a list of your installed python modules by first going to the python interpreter by typing
python at the command prompt and issuing the following command
You can list your python search path by first going to the interpreter by typing
python at the command prompt and issuing the following commands, the search path is the list of system directories that python will search to run things like commands and modules
>>> import sys
Comment #1 posted on 2016-08-13T10:24:35Z by Dave Morriss
Hi Mr X,
An interesting show. Good to know you're having fun with the BlinkStick.
I'm looking forward to hearing about your Python project in due course.
<< First, < Previous, Next >, Latest >>
Note to Verbose Commenters
If you can't fit everything you want to say in the comment below then you really should record a response show instead.
Note to Spammers
All comments are moderated. All links are checked by humans. We strip out all html. Feel free to record a show about yourself, or your industry, or any other topic we may find interesting. We also check shows for spam :).