1. Virgilio Mattoli July/02/04 BDMLpag1/3 Servo Driver Control Vers. 1.0 Servo Driver Control V1.0 (8 Servos) PIC28F252 Signal V CC GND 0 7 6 5 4 3 2 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 LED Red LED Key1 (START) Key2 (STOP) PIC Rx Gnd 5V (Out) ES In 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” are internally connected!

2. Virgilio Mattoli July/02/04 BDML pag.2/3 Servo Driver Control Vers. 1.0 Servo Driver Control V1.0 (8 Servos) Red LED Green 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 PIC18F258 C5 C3 C4 10K 4 MHz 7 6 5 4 3 2 1 0 +5 V (Servo Power) Power Swich Out RX TX Key 1 Key 2 100 nf LM7805 ++ 22  f 2.2  f 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 In ES

3. RS 232 Adapter Cable Virgilio Mattoli July/02/04 BDML pag3/3 Servo Driver Control Vers. 1.0 Serial RS232 DB9 Connector (Female) 12345 6789 PC-TX PC-RX PC-GND Vcc T1out R1in R1out T1inR2in 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 PIC Tx PIC Rx Gnd 5V (In)