K'nex Programmable Automaton

Step 3 Programming the Automaton

Looping the string under allows moves the vehicle forward on that side. Looping the string over moves the vehicle backward on that side. To allow the vehicle to move forward, both spindles would loop under; to turn right, the right spindle loops over and the left spindle loops under, and vice versa. Keep in mind that the code runs in reverse, with the top most string layers coding for the first actions of the automaton.

To simplify programming and to allow easy distribution of different scripts, I have set up a simple coding syntax. I suggest coding in notepad so the spacing is even.

This is how the script for each wheel starts, with a L and R for the respective left and right wheels. Y is a number, and x is a unit of measurement. The Yx shows the length of the string in a particular unit. So, 8meters, for example.
Yx
L/
R/

Each spindle has 8 rods, so moving forward (looping the string under) one complete spindle revolution would be the following. u is for looping under, and o is for looping over. A // signifies the end of code."

L/8u//
R/8u//

L/5u/3o//
R/8u/--//
The script above shows a slight left turn. A 5u signifies that a grey connector be placed on the 5th rod from the origin, with the origin being 1, and a turn of direction occurring on the 5th rod. The other side has -- to help balance out the script to make it easier to code.

An "s" signifies a stop loop around a grey connector. An example would be
L/5u/3o//
R/8s/--//
This means the that on the right spindle, the string is to be looped 360 degrees around the grey connector, signifying a stop. The stop should end in the same direction it started.

That's all there is to it. On the next step I have provided some sample measurements and scripts to combine into more complex scripts.

Comments

[The Jamalam]

Here is a sample script: L/8u/5o/8u/5o// etc R/5o/8u/5o/8u// etc Giives a sort of Snakey S shaped path Here's another one: L/32u// R/32o// Goes around in circles. lol fun to watch

[crestind]

Wow sweet thanks! If you want you can name your script and I'll add it.

[eLeet]

You might consider adding a video to this step- although I understand how Automata work from previous experience, to those who haven't familiarized themselves with them in the past, it might be a bit confusing ;)

[crestind]

Thanks for your suggestion. I will probably add one in the coming weeks.