DM163029 Microchip Technology, DM163029 Datasheet - Page 38
![BOARD PICDEM FOR MECHATRONICS](/photos/9/4/90440/dm163029_sml.jpg)
DM163029
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DM163029
Manufacturer:
Microchip Technology
Quantity:
135
Company:
Part Number:
DM163029
Manufacturer:
MICROCHIP
Quantity:
12 000
PICDEM
DS51557C-page 34
TM
FIGURE 2-13:
Instructions
POT1 adjusts the speed of the motor. Set POT1 at 100% to run the motor at full speed.
The speed indicated on the LCD should be similar to the speed shown in Project 5.
Next, run the motor at half speed by setting POT1 to 50% and do the comparison again.
Discussion
Back EMF is typically not as accurate as speed feedback from an optical encoder.
However, in many applications the accuracy does not have to be very precise and
measuring Back EMF is more cost effective than any other speed feedback
mechanism.
Mechatronics Demo Board User’s Guide
10 kΩ
POT1
Back EMF
Note:
V
DD
Different motors have different speed characteristics. The motor used at the
time this manual was written may be different from the motor shipped with
your PICDEM Mechatronics Demo Board. Verify that the motor data sheet
included on the CD-ROM matches the motor on the board. If they are
different, go to Microchip’s web site for updates to this project.
1 kΩ
1 kΩ
R10
R32
PROJECT 6: SCHEMATIC
V
1000 pF
C26
C36
1000 pF
DD
11/32
12/31
2
7
AN0
V
AN4
V
DD
SS
PIC16F917
COM
CCP2
SEG
RD7
X
X
Simplified circuit shows
equivalent functionality
30
21
Segment pins
Common pins
VIM-332-DP
10 kΩ
10 kΩ
LCD1
© 2006 Microchip Technology Inc.
U11:B
U10:A
Motor
V
DD
Back EMF