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Week 2 of the FutureLearn Begin Robotics MOOC has now come and it contains some interesting material. The MOOC has many small steps (30 in Week 2) some with just written articles. some with short videos and some with demonstrations and exercises. The demonstration of using a H bridge to control a DC motor is good, see below:     http://https://www.reading.ac.uk/UnivRead/vr/OpenOnlineCourses/Files/Simulation2/demoPWM.html   It starts to discuss a technique for measuring the bac ...
As part of the Begin Robotics MOOC that I am currently following, a two wheeled mobile robot is used for many of the examples (see Studying : Begin Robotics : Week 1 ). For the MOCC a simulation of the two wheeled robot is used but having seen a video  (http://https://www.futurelearn.com/courses/begin-robotics/0/steps/2875 ) of the actual ERIC I decided it looked like it would be fun (and relatively simple) to build my own.   I would need to redesign the whole structure because the r ...
The first week of the Future Learn Begin Robotics MOOC has now started and I have worked my way through the material. This is a sequence of short videos, written pages and exercises using a simulation. Being and introduction course the content and material is relatively simple and doesn't (yet) contain any mathematics or difficult concepts.   The first exercise is a simulation of a two wheeled mobile robot where you can select the speeds of the two motors to see the effect on the mobile r ...
After playing with the hardware for a while I thought I would see if I could actually make a connection to one of the Bluetooth Christmas Tree light controllers. I eventually managed to download the correct App for my Android smart phone, it is the one with the reindeer and not the one with the Christmas tree (probably - it is not that clear). Regretfully the App does not gather many good reviews with a majority seeming to indicate that the App doesn't work and doesn't connect to the LED control ...
Recently received an email from Future Learn about the Begin Robotics MOOC that I have signed up for, starting on 7th Jan'19. Only a few days now before the fun begins. I ll get to play with ERIC the robot - whatever that is - a simulation I think. I'd like to say that I'm ready, but I'm not as I'm still exiting Christmas.     Dubbie ...
I have managed to connect up the output of the LED controller to my oscilloscope. This is the non-Bluetooth version of the controller because it is still fully shrouded so it is much safer, but it should be the same as the same LEDs are plugged in. I was expecting to see a 50 Hz sine wave of some description, but instead, I discovered a 66V peak to peak square wave at 25 Hz, see photograph below. Apologies for the fuzziness of the photograph, I have not yet worked out how to transfer my oscillos ...
Whilst wandering around a local store after Christmas looking for reduced cost Christmas decorations and hence bargains - of which there were only a very small number this year, I noticed a Christmas Wonderland Bluetooth Transfer, for controlling a string of LEDs. Normally I would have just ignored this as left-over controllers are usually useless as all the things they might control have been sold. But, as it mentioned Bluetooth I had a second look. There was almost a complete lack of informati ...
Having become a little behind on the four week Open2Study Mobile Robot MOOC that I signed up near the beginning of November 2018 I decided to put some extra effort in and get ti finished.     I didn't quite manage to get 100% in every assessment as I couldn't bring myself to put the designer's test sequencing before safety, so even though I took the test three times I just kept getting one question wrong. Still, passed well enough to obtain my free downloadable certificate at some t ...
dubbie

Studying

Posted by dubbie Dec 10, 2018
One of the goals of my retirement was to undertake some further study, mostly in robotics and Artificial Intelligence. Not for any constructive reason but just for fun. I didn't want to do anything too heavy or demanding as I wanted to be retired and just have fun so a full undergraduate degree was out of the question. I thought of doing some post-graduate study which seemed to be at about the right level for what I wanted, but I didn't fancy a complete Masters or similar. I also wanted to be ab ...