BEAM From the Ground Up is a
What to do with an Nv
Before you start on this material, you should have read the
page and built up a breadboard version. You've been
LEDs for visibility.
The basic circuit
is just like a spinal cord without anything
attached. You need some sort of clue as to what it
is doing, so add low power LEDs to the output of
each Nv. This makes it possible for you to see
what's going on. You can't drive motors yet but
until you are accustomed to the basic stable states
of the microcore
the motors will make even less sense than the
Note that here, only one Nv
is shown, and the resistor
should be at least 3 KOhm.
Use a battery or very well regulated (i.e.,
This is what you should get. This is know as the
state. This means all Nv's firing at Max rate.
There is a maximum of 3 processes (a process is
defined as one LED / Nv on) at any one time, so
there will never be two adjacent LEDs on at the
same time. This is the microcore's
version of the Fermi exclusion principal, and an
attribute shared by biological Nv nets.
Saturation is the natural Power-on state. It is
sort of the "crazy go nuts" state for a Nv Net.
Saturation will occur when a the microcore
encounters a disruption in main power, or when too
much data is injected from sensors or Nu / Nv nets.
Fortunately it's easy to get a more-stable useful
3:Add a Process
Neutralization circuit (PNC).
Wire up a switch to short out one of the input
bias resistors like this.....
Closing this switch destroys any passing
process. Hold it long enough and all processes are
destroyed. Not really a good thing so....
4: Two process
By holding the switch closed for approx. 2
seconds you should be able to achieve
If all values are even, and no feedback is
available (say from a motor), then the processes
should fall 180 degrees out of phase with each
other. This is seen when they appear to be running
side by side with each other. Two processes are
sort of like Parkinson's disease the Nv's are
trying to act against each other and if they fall
into the 180 degree since then you have lock up
(ever seen the movie "Awakenings"). This state can
be useful in some cases but in the case of a simple
walker its not much use.
5: The single
By holding down the PNC switch for another 3
seconds or so you should get this. This is the
stable one process
state that is the basis of most of the Nv
A.K.A. Off, this is a Nv net at
Kind of boring Huh....
7: Adding a
Process Initialize Circuit (PIN)
By wiring up another switch from an input to Vcc
(+ve) you can introduce processes to the microcore.
So by using the PNC and The PIN you should be able
to cycle through all the microcore's
Now play with it, get used to it, understand it,
and then go on to the Leg