User manual

PICDEM™ Mechatronics
© 2006 Microchip Technology Inc. DS51557C-page 11
FIGURE 1-2: PICDEM MECHATRONICS DEMO BOARD HARDWARE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Legend:
1. 40-pin socket
2. 20-pin socket
3. On-board voltage regulator and
power connections
4. 8 LEDs
5. 39 segment LCD connected to 14
pins on the 40-pin socket
6. RS-232 socket and associated
hardware
7. Temperature sensor
8. Light sensor
9. 2 potentiometers
10. 32.768 kHz crystal
11. 4 tactile switches
12. In-Circuit Debugger (ICD) connecto
r
13. In-Circuit Serial Programming™
(ICSP™) connector
14. Over-current protection circuit with
Reset switch
15. 4 half-bridge MOSFET drives with
associated MOSFET drivers and
logic
16. Current sense for output stage
17. Back Electromagnetic Force (EMF
)
sense
18. Optical Interrupter for detecting the
speed of the Brushed DC motor
19. Brushed DC motor
20. Stepper motor
21. Drive screw terminals
22. 9 V
DC battery
22
21