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by JonnyAlpha
Thu Dec 13, 2018 7:56 pm
Forum: Camera board
Topic: Recommended Pi Camera For Robotic Vision with OpenCV
Replies: 0
Views: 519

Recommended Pi Camera For Robotic Vision with OpenCV

Which Camera? ok so I am trying to help someone kit out their robot and they asked me which camera. I said "just get a Raspberry Pi camera," they said "which one." Wow I didn't realise there were so many!!! So for robotic vision, in challenges such as the ones in PiWars , which Raspberry Pi (or inde...
by JonnyAlpha
Fri Nov 30, 2018 5:45 pm
Forum: Advanced users
Topic: Cloning SD Cards Using Windows
Replies: 3
Views: 452

Cloning SD Cards Using Windows

Hi; I am working on a robotics competition with my local college. I helped them today setup Raspbian with the CamJamEdukit Robotics modules for motor control. They now need to clone this image to four other SD cards using WIndows. I am a Mac person and can do this on my mac using terminal but have n...
by JonnyAlpha
Mon Nov 12, 2018 7:29 pm
Forum: Automation, sensing and robotics
Topic: Open CV Computer Vision - Direction Decision
Replies: 1
Views: 656

Open CV Computer Vision - Direction Decision

Need a little help here if I may. I am trying to develop robotic vision using OpenCV and my Raspberry PI based robot. I am currently working on navigating around by identifying the floor and walls and then the idea is to move without hitting the walls. Combined with this I am working on detecting th...
by JonnyAlpha
Sat Nov 03, 2018 1:04 pm
Forum: Python
Topic: Program management - modules and functions
Replies: 2
Views: 139

Re: Program management - modules and functions

Thanks Richard, I've never used classes or this method before but it does seem a great way of keeping things modular.
by JonnyAlpha
Sat Nov 03, 2018 10:09 am
Forum: Python
Topic: Program management - modules and functions
Replies: 2
Views: 139

Program management - modules and functions

Hi; I am working on a robotic vision project and need a little help in managing the different elements of the program. The first phase is to navigate a maze. We now have a basic working vision element that can identify the edges of the walls and which direction to turn in based on the angle of the w...
by JonnyAlpha
Fri Oct 12, 2018 10:50 am
Forum: Automation, sensing and robotics
Topic: OpenCV and Computer Vision Help
Replies: 2
Views: 509

OpenCV and Computer Vision Help

Hi; So I am working on Computer Vision with my Raspberry Pi3 based robot and wondered before I start asking Python OpenCV related questions here, should I ask elsewhere - if so where? I have looked for a suitable Forum on the subject and have asked questions on Stack Exchange and Stack Overflow but ...
by JonnyAlpha
Tue Aug 28, 2018 9:31 am
Forum: Automation, sensing and robotics
Topic: Recommended Robotic Arm Project
Replies: 1
Views: 201

Recommended Robotic Arm Project

Hi; Just asking if anyone can recommend a reasonably low cost (£30 - £40) self build Robotic Arm Project. I am running a physical computing workshop in our local FabLab and one of the students would like to build a simple robotic arm. The arm will be pre-programmed but should include manual control ...
by JonnyAlpha
Fri Aug 03, 2018 12:46 pm
Forum: Troubleshooting
Topic: Cannot Install Moviepy for Python 2.7
Replies: 1
Views: 133

Re: Cannot Install Moviepy for Python 2.7

Mmm I re-read details on installing packages and

Code: Select all

sudo pip install xxxxx
should install the module for python 2 and

Code: Select all

sudo pip3 install xxxx
for python 3.
In an act of desperation I tried

Code: Select all

sudo pip2 install xxxxx
and it worked - how bizzare - it was not documented
by JonnyAlpha
Fri Aug 03, 2018 12:37 pm
Forum: Troubleshooting
Topic: Cannot Install Moviepy for Python 2.7
Replies: 1
Views: 133

Cannot Install Moviepy for Python 2.7

Hi; I am trying to follow this tutorial for OpenCV robot vision: https://www.hackster.io/kemfic/simple-lane-detection-c3db2f?f=1# However I am having trouble with the module 'moviepy'. I am trying to install it using sudo pip install moviepy but the output suggests that the Requirement is already sa...
by JonnyAlpha
Sat Jul 28, 2018 9:19 am
Forum: Advanced users
Topic: Remote Access Made Easy (Not yet but it's a thought) (c)
Replies: 5
Views: 335

Re: Remote Access Made Easy (Not yet but it's a thought) (c)

It isn't a universal solution like the one you envisage, but for RPiZero boards (only) and for access to the GPIOZERO API (only), are you aware of this - http://bennuttall.com/raspberry-pi-zero-gpio-expander/ It meets this restricted part of your remit: I would love to be able to use Raspberry Pis ...
by JonnyAlpha
Sat Jul 28, 2018 9:00 am
Forum: Advanced users
Topic: Synergy Keyboard and Mouse Sharing
Replies: 1
Views: 198

Synergy Keyboard and Mouse Sharing

Hi; Whilst looking for host access solutions (see separate post). I came across synergy which enables keyboard and mouse sharing fo WIndows, OS X, Linux etc. It appears to cost money but a little more research and it would appear that older binaries are open source. Has anyone used this on a Laptop ...
by JonnyAlpha
Sat Jul 28, 2018 8:29 am
Forum: Advanced users
Topic: Remote Access Made Easy (Not yet but it's a thought) (c)
Replies: 5
Views: 335

Re: Remote Access Made Easy (Not yet but it's a thought) (c)

I am looking for a direct connection, plug and play solution, which does not exist at present (as far as I am aware). The user should be able to plug the Raspberry Pi into a Laptop and open an app and hey presto - Raspberry Pi Desktop appears. This would be ground breaking IMHO and make the Raspberr...
by JonnyAlpha
Fri Jul 27, 2018 7:38 pm
Forum: Advanced users
Topic: Remote Access Made Easy (Not yet but it's a thought) (c)
Replies: 5
Views: 335

Remote Access Made Easy (Not yet but it's a thought) (c)

Hi; I had a thought today and just wanted to put it out there and share it to get some feedback - if I am rambling I apologise :-) I am a primary school teacher with several years of experience with the Raspberry Pi (HAB flight, Pi Wars, small scale robotics etc). I use RPis in my 2 x after school c...
by JonnyAlpha
Fri Jul 13, 2018 5:09 pm
Forum: Advanced users
Topic: Testing GPIO pins
Replies: 3
Views: 482

Re: Testing GPIO pins

Thanks Joan,

Installed wiring pi and looks like its showing a fault with all of the GPIO pins :-(
Back to Pi Hut for a replacement hopefully.
by JonnyAlpha
Thu Jul 12, 2018 2:16 pm
Forum: Advanced users
Topic: Testing GPIO pins
Replies: 3
Views: 482

Testing GPIO pins

Hi, We have a problem with one of our Raspberry Pi 3's. We are using the CamJamEduKit3 Robotics kit and have been writing some code from the associated worksheets to run our motors from the motor driver board. One one of the Pi's as soon as you switch the battery pack on that powers the motors (via ...
by JonnyAlpha
Sun Jul 08, 2018 11:30 am
Forum: Troubleshooting
Topic: Missing Task Bar and Corrupted White Desktop
Replies: 7
Views: 418

Re: Missing Task Bar and Corrupted White Desktop

It seemed to be a an unfinished update.
I tried to run sudo apt install raspberrypi-ui-mods and it complained saying something about dpkg not configured.
I followed the instructions and the update finished and now I have a Desktop back.
by JonnyAlpha
Thu Jul 05, 2018 4:23 pm
Forum: Troubleshooting
Topic: Missing Task Bar and Corrupted White Desktop
Replies: 7
Views: 418

Re: Missing Task Bar and Corrupted White Desktop

ShiftPlusOne wrote:
Thu Jul 05, 2018 2:36 pm
Sorry, that should've been history.log, not term.log
DOH!

Oh well all fixed now :-)
by JonnyAlpha
Thu Jul 05, 2018 2:25 pm
Forum: Troubleshooting
Topic: Missing Task Bar and Corrupted White Desktop
Replies: 7
Views: 418

Re: Missing Task Bar and Corrupted White Desktop

Here it is: Log started: 2017-08-16 04:28:00 (Reading database ... 122646 files and directories currently installed.) Preparing to unpack .../python3-pip_9.0.1-2+rpt2_all.deb ... Unpacking python3-pip (9.0.1-2+rpt2) over (9.0.1-2) ... Preparing to unpack .../python-pip_9.0.1-2+rpt2_all.deb ... Unpac...
by JonnyAlpha
Thu Jul 05, 2018 1:52 pm
Forum: Troubleshooting
Topic: Missing Task Bar and Corrupted White Desktop
Replies: 7
Views: 418

Re: Missing Task Bar and Corrupted White Desktop

To help understand what happened, could you post your /var/log/apt/history.log? The fix may be to run "sudo apt install raspberrypi-ui-mods", but it would be good to figure out what happened. Entering /var/log/apt/history.log Results in the following: bash: /var/log/apt/history.log: Permission denied
by JonnyAlpha
Thu Jul 05, 2018 12:04 pm
Forum: Troubleshooting
Topic: Missing Task Bar and Corrupted White Desktop
Replies: 7
Views: 418

Missing Task Bar and Corrupted White Desktop

Hi; I have 6 Raspberry Pi's at school which I have flashed a new image of Stretch. After enabling VNC and SSH for remote access (we are building robots), when logging in the start menu disappeared. After reading a post about the same issue it suggested that there was a bug with earlier versions of S...
by JonnyAlpha
Wed May 30, 2018 9:00 pm
Forum: Python
Topic: Updating python-skimage
Replies: 1
Views: 503

Updating python-skimage

Hi; Whilst following a document scanner guide by Adrian Rosebrock I have encountered some issues with a python package python-skimage. One of the modules associated with python-skimage. The script calls for the import of threshold_local which cannot be found. On further investigation it seems that t...
by JonnyAlpha
Wed May 30, 2018 3:51 pm
Forum: Advanced users
Topic: OpenCV - Best Installation Guide
Replies: 0
Views: 128

OpenCV - Best Installation Guide

Hi; What is the best method of installing OpenCV. I only need it for image processing not as a developer. I have installed it a couple of times before using Adrian Rosebrock's guide here: https://www.pyimagesearch.com/2017/09/04/raspbian-stretch-install-opencv-3-python-on-your-raspberry-pi/ but just...
by JonnyAlpha
Thu May 17, 2018 5:42 pm
Forum: User groups and events
Topic: Robotics Competition SW England
Replies: 0
Views: 4529

Robotics Competition SW England

Having competed in my first ever PiWars, ‪I am now investigating the idea of running a RObotics competition in the South West of England. Challenges will hopefully be based on this years PiWars and will be agreed first with the Cambridge Pi Jam. For those that are not familiar with the competition, ...
by JonnyAlpha
Thu May 17, 2018 5:38 pm
Forum: General discussion
Topic: Pi Wars South West
Replies: 3
Views: 291

Re: Pi Wars South West

Doug;

sorry thought I had replied to you. Thanks for your advice and will re-post. No dates have been set we are in the planning stages.
by JonnyAlpha
Sun May 06, 2018 7:58 am
Forum: General discussion
Topic: Pi Wars South West
Replies: 3
Views: 291

Re: Pi Wars South West

Well that proved popular then 😞

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