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Component: Image Reference:
LED (5mm)
+
-
+
-
h20 h21
Push Button
d4
g4
d6
g6
Push Button
d9
g9
d11
g11
Jumper Wire
Pin 2
h6
Jumper Wire
Pin 3
h11
Jumper Wire
Pin 13
j20
i4
Jumper Wire
i9
Jumper Wire
10KΩ Resistor
a15
i6
+
10KΩ Resistor
i11
+
330Ω Resistor
j21
+
One of the things that makes the RedBoard so useful is that it can make complex decisions
based on the input it's getting. For example, you could make a thermostat that turns on a
heater if it gets too cold, a fan if it gets too hot, waters your plants if they get too dry, etc.
In order to make such decisions, the Arduino environment provides a set of logic operations
that let you build complex "if" statements. ey include:
You can combine these functions to build complex if() statements.
For example:
if ((mode == heat) && ((temperature < threshold) || (override == true)))
{
digitalWrite(HEATER, HIGH);
}
...will turn on a heater if you're in heating mode AND the temperature is low, OR if you
turn on a manual override. Using these logic operators, you can program your RedBoard to
make intelligent decisions and take control of the world around it!
How to use logic like a Vulcan:
== EQUIVALENCE
A == B is true if A and B are the SAME.
!= DIFFERENCE
A != B is true if A and B are NOT THE SAME.
&& AND
A && B is true if BOTH A and B are TRUE.
|| OR
A || B is true if A or B or BOTH are TRUE.
! NOT
!A is TRUE if A is FALSE.
!A is FALSE if A is TRUE.
Jumper Wire
GND
Jumper Wire
5V
+
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