DM163029 Microchip Technology, DM163029 Datasheet - Page 28

• Manufacturer Part Number: DM163029
• Description: BOARD PICDEM FOR MECHATRONICS
• Manufacturer: Microchip Technology

Specifications of DM163029

• Main Purpose: Power Management, Motor Control
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Processor To Be Evaluated: PIC16F917
• Interface Type: RS-232
• Silicon Manufacturer: Microchip
• Silicon Core Number: DM163029
• Silicon Family Name: PICDEM
• Kit Contents: PICDEM Mechatronics Board, MCU Samples, Software And Cables
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PICDEM
DS51557C-page 24
TM
FIGURE 2-5:
Instructions
Provide a light source for the light sensor and set Potentiometer 1 to the desired trip
point. Block the light source and LED1 should turn on. Experiment with the set point
and the amount to which you block the light from the sensor. Move your hand slowly in
front of the sensor and note that the LED does not flicker. This demonstrates how
software hysteresis prevents the output of the comparator from chattering near the trip
point.
Discussion
Comparators are found in many PIC microcontrollers due to the versatility and low cost
they offer the user. As you can see, the comparator is one of the more easily used
peripherals. Refer to the Comparator Tips ‘n Tricks pamphlet included on the CD in this
kit for more information on comparators.
Mechatronics Demo Board User’s Guide
0.1
C24
μF
V
DD
6
4
Light Sensor
V
GND
TSL251RD
PROJECT 2: SCHEMATIC
DD
10 kΩ
POT1
V
V
BAT
DD
7
1 kΩ
R10
1 kΩ
R31
V
DD
11/32
2
5
C1-
V
C1+
DD
PIC16F917
RD7
V
SS
© 2006 Microchip Technology Inc.
30
12/31
270 Ω
R36
D0