Virgilio Mattoli July/02/04

BDML pag1/3

Servo Driver Control Vers. 1.0

Servo Driver Control V1.0 (8 Servos)

PIC

28F

252

SignalVCC GND

0

76

54

32

1

+5 V (Servo Power)Gnd

Power Select (External or Servo power)

PIC Tx

+13V/ +6.5V ( Power for Micro)Gnd

Power On LED

Green LEDRed LEDKey1 (START)

Key2 (STOP)

PIC RxGnd

5V (Out)

ESIn

E = External (6.5-13V) Regulated (5V) source S = Servo unregulated source (NOT SUGGESTED)In = Input (Power by E or S)

NOTE: The two “Gnd” areinternally connected!

Virgilio Mattoli July/02/04

BDML pag.2/3

Servo Driver Control Vers. 1.0

Servo Driver Control V1.0 (8 Servos)

Red LEDGreen LED

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

PIC

18F

258

C5

C3

C4

10K

4 MHz

7

6

5

4

3

2

1

0

+5 V (Servo Power)

PowerSwich Out

RX

TX

Key 1Key 2

100 nf

LM7805+ +

22 f 2.2f

Power Swich Out

Power Select(External or Servo power)

+7 / +12 V ( Power for Micro)

Key 1

12K

Power Swich Out

Key 2

12K

Power Swich Out

Red LED

820 Ω

Green LED

820 Ω

InE S

RS 232 Adapter Cable

Virgilio Mattoli July/02/04

BDML pag3/3

Servo Driver Control Vers. 1.0

Serial RS232DB9 Connector (Female)

1 2 3 4 5

6 7 8 9

PC-TX

PC-RX PC-GND

Vcc

T1out

R1in

R1out

T1in R2in

R2out

C1+

V+

C1-

C2+

C2-

V-

T2out

T2in 1

MAX233

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11 C2+C2-

V-

GND

GND

PIC Tx

PIC RxGnd5V (In)