LOGO :- UV Laser Style
January 24, 2014
Parallax Scribbler (S2) Robot - Ultra Violet Laser & XBee & LOGO (Part 2 of 5)
This is the second in a series of 5 Videos going from basic to advanced hacking of the S2 robot.
This second modification uses an UltraViolet Laser (the one I use can be focused for really thin line details)
The 1mW Blue (400nm) Laser simply fits into the pen slot of the S2 , it is driven off the Hacker Port via a transistor which means it can be switched ON/OFF under software control.
I am using a version of LOGO found off the www.parallax.com OBEX data base. Documentation
The code was modified to accommodate the new laser commands, basically the Laser switches on whenever there is any type of forward motion.
The LOGO commands are being transmitted via an XBee radio link as the original long serial communications cable often tied itself up.
The components are directly soldered to a 3 pin female header socket which slots straight into the Hacker Port.
The Laser module just plugs into a 2 pin female header.
The end result 5 point star plotted onto a sheet of Phosphourescent vinyl :-
To get the 5 pointed star I am using the stock XBee "XCTU" Serial terminal ....
You can program packets of LOGO commands and send them over the 2.4Ghz tube.
Maths Challenge :- How can you accurately calculate the radius of the final big circle; given only the length of one side (20.0cm) and the angle that the scribbler turns to draw the next side (144°) .
(The answer is 10.51cm however what is the formula......???)
If you want to peep at the maths behind it then click below ;-)