Jamboree-andrew

About Me

For the past 4 years, Andrew Mulholland, 18, has spent countless hours leading workshops & courses for hundreds of children, with one goal: to teach them what Computer Science is.

This all began in 2010 when, at the age of 14, he founded his school’s robotics club. Since then, the club has had over 200 children pass through it, building all manner of projects under Andrew’s careful instruction – from an internet connected pill dispensing robot to a quadcopter made of cardboard! More recently, Andrew has worked tirelessly to bring the Raspberry Pi computer into classrooms across the UK. As a result of his use of this credit-card sized computer to simplify computing education in classrooms, he was awarded a prestigious Gold CREST award by the British Science Association. Furthermore, he has recently been commissioned to develop a pilot program designed to teach secondary school teachers in Northern Ireland innovative ways of using the Raspberry Pi in the classroom.

For the past 7 months, in addition to teaching (and his own A-levels!), he has worked on a personal project to make using the Raspberry Pi in classrooms even easier. His free, open-source software helps significantly in schools of all sizes by migrating the storage of data to a central server hosted by each school, rather than on each Pi – this both simplifies management, and saves the school money on extra SD cards, making the Pi an incredibly viable option in classrooms. Furthermore, Andrew has also spoken at several technology and education events, including the “Future of Computing” conference in London and the UK Computing at Schools conference in Birmingham – giving a talk to over 60 teachers about teaching Computer Science through the use of robotics in the classroom!

Andrew believes every student in the UK should get the opportunity to try out Computer Science, but right now, the majority don’t ever get a chance.

Dublin Maker - 2014
Dublin Maker – 2014

6 thoughts on “About Me”

  1. HI.

    Just watched your video on You Tube with the USB Rotot ic arm and the Wii controller.

    I have a question for you.. What application did you use to supply the Live Video Feed. I have the Arm and Wii working just fine but can not find a good Application for the video. Also can you confrim that it is a Xbox Live camera that you used.

    Many thanks in advance

    Regards

    Keith

    1. For the live video feed, in that case seeing as I was using just a standard USB webcam (yes Xbox Live camera), I used mjpg-streamer. All my work with it is based off this wonderful blog post which explains everything you will need to know. If you are wanting to use the official Raspberry Pi camera, then it is a different story. For that check out my gstreamer tutorial.
      http://wolfpaulus.com/journal/embedded/raspberrypi_webcam

  2. Sorry it is me again.. I have made progress.. I have the video stream working on the robot arm.. So far so good..
    However I am getting some lag (very smal about half a second) in the video feed to the movement of the Arm. It is not easy to see from your video if you had the same problem..
    The only difference to how we have things set up as far as I can see is I am controling the arm via USB not the HBridges which i think you have (do not have an expansion board etc yet still in the post).
    Any idea ?
    Many thanks in advance
    Keith

    1. Remember what Mjpg streamer is doing, it is taking a picture, then storing it, then your computer is grabbing it off the web server. Sadly this technique rather limits your minimum lag.
      We found a few things caused worse lag. Using wifi when not near the hub/transmitter. In that setup, I believe the pi was actually plugged in via Ethernet, could be wrong though. The nearest wifi hub though is about 1m away from the pi anyway.
      Other thing is overclocking your pi, moving to a faster sd card and dropped the frame rate can help.
      We can normally average about 1/3 second lag, at good times, 1/4 second lag so you aren’t far off its limits with the pi.
      There should technically be other ways to stream it if you need very very little lag. May want to look into gstreamer for that as with the correct settings, it can do very low latency video. I am not th person to ask for help for gstreamer but chances are there is a V4L (video for Linux, standard driver for most USB cameras, official pi camera does not support it yet) tutorial for V4L.
      Let me know if you do get it lower.

  3. Mjpg streamer with spits out the feed to a web server on the pi. I have a funny feeling it auto installs apache3.
    I then point my browser at the pi IP address followed by :8080
    If you have any other questions, feel free to ask away

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