Robots and Physical Computing

This is really pulling together two recent posts, one when I started playing with Edublocks for the microbit  and one about playing with BinaryBots Crab  . The BinaryBots Totem Crab is available at  https://www.binarybots.co.uk/crab.aspx Here I going to use Edublocks ( https://microbit.edublocks.org/ ) by @all_about_code to control the claw of the Crab to close when button A is pressed (and display a C on the LEDs)  and open the claw when button B is pressed. For a discussion on the Crab and what the pins are, etc goto  http://robotsandphysicalcomputing.blogspot.com/2018/08/crabby-but-fun.html  for more details.  The timing of the opening and closing is controlled by how long the C or O takes to scroll across the LEDs. As an aside, but I found it interesting (it appeals to my geekiness), if you save the blocks, using the Save button; it stores it as an XML file, an example extract is shown below: Now I want to exp...