DM183026 Microchip Technology, DM183026 Datasheet - Page 25

• Manufacturer Part Number: DM183026
• Description: KIT EVALUATION PIC16F/PIC24F
• Manufacturer: Microchip Technology
• Series: mTouch™r

Specifications of DM183026

• Sensor Type: Touch, Capacitive
• Embedded: Yes, Other
• Utilized Ic / Part: PIC16F727, PIC24FJ128GB106
• Processor To Be Evaluated: PIC16F, PIC24F
• Interface Type: USB
• Silicon Manufacturer: Microchip
• Kit Application Type: Sensing - Touch / Proximity
• Application Sub Type: Capacitive Touch
• Kit Contents: 6x Brds, Analyser, Cable, CD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Interface: -
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Using the mTouch™ Sensing Solution
3.2.2.3
SENSOR DATA CHARTING AND LOGGING
In Figure 3-6, the channel selected is named R1. The Autoscale button will have the
channel name it is associated with. Within the Setup window, the Chart R1 button
enables data recording from any sensor channel. Clicking on Chart R1 opens an
additional window (Figure 3-6) that displays a plot of the channel’s conversion value
versus time. Plotting of data begins immediately when the Chart R1 is pressed and
continues to plot as long as the Run checkbox in the Plot window is selected. Pressing
the Clear button erases the plot and begins a new plot in the same window.
The range of the touch sensor values on the chart is equal to the minimum and
maximum values set for the bar graph. Data for the Plot window is sampled and
displayed at a minimum rate of 10 samples per second. The amount of data displayed
(and effectively, the scale of the time axis) is changed by changing the value in the Num
Points text box. By default, the number of data points is 500.
The Log Data checkbox enables automatic logging of the channel’s data to a text file
(.txt extension). The filename is the touch sensor channel name with the .txt
extension. When the checkbox is selected, a dialog box pops up to confirm the file
name (generally, <channel-name>.txt) and working directory (C:\Program
Files\ Microchip\mTouch2). Data is logged to the file at the same rate as it is
plotted (10 samples per second).
Just like the sensor Setup dialog boxes, clicking on another channel while a Data
Charting window is open does not close the original window or open a second Data
Charting window. Instead, the window becomes the Data Charting window for the
channel most recently selected.
FIGURE 3-6:
DATA CHARTING WINDOW
© 2009 Microchip Technology Inc.
DS41385A-page 21