Showing posts with label Learning. Show all posts
Showing posts with label Learning. Show all posts

Sunday, December 29, 2019

Tobbie II Robot - powered by a BBC Micro:Bit control board.

I assume you have just purchased a Tobbie II and now your stuck, I don't blame you, I have experience in computers and electronics and still had to dig around for help.

Hopefully this helps a little.

The BBC micro is the heart of the projects it is all controlled by this little board, you don't have to have it connected to the Robot to do the projects form the Microbit.org website.

This board is sold separately and is connected by a small battery pack and USB lead to your computer, I would try a few of the projects online from the website first then when comfortable connect it to the Tobbie II robot and get it to do the explorer, follow me or singing and dancing project.

First step is to build the robot and whatever you do make sure you have purchased the BBC Micro:Bit control board otherwise you just have a robot with motors but no heart (computer).

I assume you have made it to the https://microbit.org website by now but cant find any help on the Robbie II robot kit.

You can either program it using the on board Bluetooth using the IOS.....app or by using the lets code on the website.

Tricky to find : Click on Lets Code then Lets Code again then New project, you will see that the Tobbie II is not in the list, click on the setting then extensions, then search for Tobbie II and click on the extension.

You will see that Tobbie II has been added


 https://microbit-micropython.readthedocs.io/en/latest/tutorials/introduction.html

This above website can help you learn how to code or you can download the code from the link below.

You can always edit the code and make your own project.

http://www.elenco.com/teachtech-tobbieII-downloads/

https://www.elenco.com/wp-content/uploads/2019/05/Tobbie-II-Downloads.png

TobbieII download includes :
00.Assembly-Checker.hex, 01.Explorer.hex, 02.Follow_Me.hex, 03.Singing-Dancing.hex, 04.Light-Tracker.hex, 05.Thermometer.hex, 06.Calculator.hex, 07.Rock_Paper-Scissors.hex, 08.Dice.hex, 09.Notice-Board.hex, 10.Compass .hex,
11.Bowling.hex, 12.APP Remote Control.hex

Helpfull siteshttps://scratch.mit.edu/ideas
https://tinkercademy.com/tutorials/getting-started-with-microbit/



Commodore 64 - Programming Using Vice and Samples

In the early days my first PC was a commodore 64 computer, I would spent hours playing games and learning how to program, I thought it would be great to teach my 12 year son how to program using the same commodore 64 or if  you dont have one you can use an emulator like Vice : http://vice-emu.sourceforge.net/index.html#download




Find the manuals here : https://www.commodore.ca/manuals/c64_users_guide/c64-users_guide-03-beginning_basic_programming.pdf

Basic Programming samples are found in the book and it would probably best they type it out themselves but I found a few errors so the below samples may help.

Once you have finished typing in a program you can save the image by going to snapshot then save snapshot image.


 Alternatively if you wont to load one, go the snapshot then load snapshot.

Here are a few I did  from the users guide:

Guessing game.vsf: https://drive.google.com/file/d/1lTuQCKSkbFAxSQfX10z6ve28mlaGamXe/view?usp=sharing

Hello world.vsf:
https://drive.google.com/file/d/1xc2efNx-sV6uvD1UJoX--wVv-3_5dLU_/view?usp=sharing

Making Music on your Commodore 64.vsf:
https://drive.google.com/file/d/1ClohIyFwfuqXI3zggEcSIu3-o32H6yN8/view?usp=sharing

More bouncing balls.vsf:
https://drive.google.com/file/d/1ZzjC4E64ce1PxezwBMhCr6homwDMgO2X/view?usp=sharing

Your roll.vsf:
https://drive.google.com/file/d/1AwvAS7Tyhvzpb3nw88-P3KXSA7O0_kr1/view?usp=sharing

I also found I could copy the code from the guide and paste into Vice but it needed to be converted to lower case or it would look unreadable.

To do this highlight or copy the code into notepad 2 :http://www.flos-freeware.ch/
then go to Edit/Convert /Lowercase, sometimes may need to convert to uppercase first then back to lowercase, once in lowercase copy the code and paste into Vice emulator by selecting edit then paste from menu.
Be warned it doesn't copy very well from the pdf user guide so you will probably have to fix some of the code anyway, also there are a lot of mistakes in the code, see my samples for some working code.
If you have any of you own Vice image files from manual please share.



Next is to build a Tobbie II robot - powered by a BBC Micro:Bit control board.

https://lozaelec.blogspot.com/2019/12/tobbie-ii-robot-powered-by-bbc-microbit.html





Saturday, December 29, 2012

Understanding Telescopes

How to Choose Eyepieceshttps://www.youtube.com/watch?v=m7u9Q5hV7yc
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Telescope Basics 1 (of 6) Types of telescopes: https://www.youtube.com/watch?v=goL3K_xQzbE
Telescope Basics 2 (of 6) Magnification/focal ratio : https://www.youtube.com/watch?v=gpnB5w_gZsI
Telescope Basics 3 (of 6) Standard eyepieces : https://www.youtube.com/watch?v=DODk3cJam68
Telescope Basics 4 (of 6) Field of view : https://www.youtube.com/watch?v=9oALhSq0hoY
Telescope Basics 5 (of 6) Barlow lenses : https://www.youtube.com/watch?v=dpF1_Q5yPsk
Telescope Basics 6 (of 6) Finderscopes, types, and alignment : https://www.youtube.com/watch?v=waPj5AkXirs
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Friday, February 11, 2011

Understanding Camera Focal Length & Lenses

I work in electronics and it can be daunting working out the right lens to buy for your camera

You need to work out the distance to object, focal legth, type of lens, is it a wide lens, f stop, aperture and more.

All you want is a lens.

This site explains the hard jargon, it also has an online calculator to work out the focal length. You will now be able to choose the right lens to suit your camera.

http://www.cambridgeincolour.com/tutorials/camera-lenses.htm