As seen in the last lesson, you saw how to read
voltages in from the Arduino from the LM35DZ, convert them to $^\circ$C and $^\circ$F,
then plot them. Let's do the same here, but with a nicer looking plot. Let's also
see how to make the x-axis into a real time (like seconds).
As you run this lesson, try to change the temperature (with ice, your warm breath, a match, pinch in your fingers, etc.) and watch the plot go up
and down in response.
seconds()
Move the mouse over a dotted box for more information.
Now you try. Go for it! Fix the analogread argument, and be sure that tempF gets computed as the temperature in $^\circ F$. Fix the
graph_point line to plot time vs. temperature.
Type your code here:
See your results here:
See this lesson for the circuit needed. Note how we'll take 100 samples, and get
the current number of seconds into variable t (t for "time"). After you complete the code, you'll have
the temperature in $^\circ$F and $^\circ$C available. Fix the graph_point line to plot t (on the x-axis)
vs. temperature, tempC or tempF (on the y-axis).
Share your code
Show a friend, family member, or teacher what you've done!