logging : Plot exactly what has
been received from the serial port (Advanced
logging must be unchecked).
a) Stop logging automatically after a selected number of data
points (Max 1000pts) . (Stop
after ### points) b) Continue
logging after a selected number of data points (Max 1000)
but replace old data points by new data points.
Each second the logger will read and present available serial
data. If log-data is received the data will be copied to the
and automatically graphed/plotted.
NOTE: To receive a big amount of X Y data all at once
(<= 1000 X Y pairs), use "standard logging" and the logger will
second read and collect
as many XY-data as possible limited by the baud rate.
Arduino example A): First parameter
(time-Seconds) - Space
- Second parameter
2) Advanced logging (checked): Possible to select interval,
parameter and conditional statement for filtering,alerts etc. Need
only Y values. The time X, is in this case (Advanced logging),
provided by the data logger.
Using arduino example (A) (Advanced Logging) 'Selected
parameter' has to be set to 2
Time (interval) : From
1 second to 9999 seconds. Conditional
statement (options): Log
if | Y(i)-Y(i-1) | >= | c
|Plot only when
the absolute value of: | last log value - previous
log value | is greater than than the absolute value of:
| c |
only when Y(i) != c
Stop if Y(i) > = cLogging will be stopped if Y(i) > =
Stop if Y(i) < = cLogging will be stoppedif Y(i) < =
Red Alert if
Y(i) >= c Entire plot area will go from white to
redif Y(i) >= c
Red Alert if Y(i) <=
plot area will go from white to red if Y(i) <= c
example: Plot the last X Y data pair
(X=time(s) , Y= deg. Celsius) in 10s intervals only if the
the new temperature ( Y(i) ) is at least 1 deg.
higher or 1 deg. lower than the previous
temperature ( Y(i-1) ).
Solution conditional statement example:
Conditional statement for this example: Log if | Y(i)-Y(i-1) |
>= | c |
and let c = 1
(Interval = 10)
"Deactivate alert if condition fails" : If unchecked with a
"Red Alert" active, the alert must be turned off manually by
changing the c-value or by clearing the c-text field using the "Clear"-button.
From the menu bar select: File
--> Setup and Data
Repeat audio alert X times
Interval X sec. Turn off audio alert:
Repeat audio alert 0 times
--> Save audio setting for Red Alert
data from a Microcontroller/Arduino XY- serial
data should be sendt no less than 1 time each second (ideally 2
times each second) from the microcontroller.
CHEMIX School Data
Arduino temperature data
Code/Sketch for the CHEMIX School data logger