.22uf monolithic cap
V>
nc7s14 fairchild tiny logic sin=
gle gate =
scmitt inverter
4 pin in connector
4 pin out connector
>
2 pin header
3 pin header
two 1 pin header
two jumpers.
The total cost comes to about $4.50 which is mo=
re than =
i expected, but i can get it lower using slightly different =
parts.
It runs as a normal NV neuron but there are a f=
ew =
things, jumper A is designed to give bias, you can adjust the pot t=
o the =
value you want (0 ohms if you want) then you use the two pins to ad=
d =
whatever bias you want, also handy cause you can just plug it in us=
ing a =
connector. When you aren't using the bias, set the pot to the value=
you =
want and use the jumper to join the resistor to =
ground.
Jumper B has three headers. The first is =
to =
connect your output to (motor driver). The next two allow you to tu=
rn on =
or off the LED.
The 'board in' Connector (male) is located on t=
he side =
of the board, it provides power from the previous neuron. It also g=
ives =
the output from the previous neuron to the input of the current one=
. The =
spare connector (which has a jumper) can be used for any cross boar=
d =
application, it's just an auxillary to add more functionality, use =
your =
imagination on just how to use it (bias, sensors, data =
bus).
The 'board out' connector (female) is pretty se=
lf =
explanatory. It has two power connectors to pass power to the next =
neuron. Also has the output from the current neuron to give to the =
input =
of the next. The spare connector is the same as above.
Boards can either be connected directly side to=
side =
or with a cable. Power only has to be provided to one neuron, which=
=
could be done by soldering wires onto the power pads, or i could ad=
d =
connector (but theres enough already).
The whole thing would be surface mounted to a s=
mall =
PCB, in the shape of a triangle of hexagon. That means that eventua=
lly =
cables will be required or connectors used on multiple sides of the=
PCB. =
You could also have blank connector boards but that just adds to co=
st =
and complexity.
What do you think?
David
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