Rotator module version 3.2

This revision is from 2014/07/23 14:49. You can Restore it.

Components of Multi rotator controller server

Circuit diagram(Edit)

Planting plan(Edit)

Part list(Edit)

Main and LCD PCB two PCB
C1,C2,C3,C4,C5, C6 capacitor 4n7
D1,D2,D3,D4 diode 1n4148
L1,L2 inductor 100uH
R1,R2,R3,R5 resistor 1k
R9 resistor 4k7
R4,R6,R7,R8 resistor 510R
RV1 potenciometer 1k
Q1,Q2,Q3 transistor BC547
S1,S2,S3 LED switch
RL1,RL2,RL3 Relay
U1 LCD 16X2
U3 preset encoder with knob
J1 DB15-F + DB15-M
CON1 pin array 5x2
P2+P1, P3+P4 strip 9+13 pins 90°
P5 pin array_3x2
P6, JP1 pins + jumper
U2 Arduino nano 3.0 + socket

✔ All components

❏ Solder R4 R6 R7 R8 (marked in blue)

❏ 13 and 9 pins 90° strip

❏ 16 pins strip to LCD

❏ Insulating spacer washers between LCD and PCB

❏ LCD module to PCB

❏ CW, CCW and START switch (marked in blue) and preset encoder, Now front panel is final

❏ Next R1 R2 R3 R5 (marked in black) and R9 solder on main board

❏ D1 D2 D3 D4 (marked in red)

❏ L1 L2 (marked in green)

❏ Q1 Q2 Q3

❏ C1 C2 C3 C4 C5 and C6

❏ 6 pins of brake sw, Inputs connector, R9, DIL cocketfor Arduino NANO

❏ F15 connector, three relay, Arduino nano

❏ last solder front panel via pin strip

❏ after power up, preset LCD contrast with potentiometer RV1


Configure Arduino firmware by K3NG

  1. Download stable or unstable arduino code, plus read documentation
  2. Download and change custom pins.h
    1. Enable External Analog reference
      1. in unstable code - uncoment line in rotator_features.h
        #define OPTION_EXTERNAL_ANALOG_REFERENCE  //Activate external analog voltage reference (needed for unit)
      2. in stable code activate this function with insert analogReference(EXTERNAL); to arduino code before analog_az = analogRead(rotator_analog_az); in master .ino file
            analog_az = analogRead(rotator_analog_az);
  3. Edit rotator_features.h and enable: (delete // at the lines)
    1. LCD Display
    2. Azimuth voltage potentiometer
    3. Preset encoder
  4. Possible change the Baud rate to 9600 in (at K3NG source code its 115.k baud the preset)
    #define SERIAL_BAUD_RATE 9600


The entire module can be powered from USB only, but there is a voltage drop, it is better to use an external +5V source, or a DC/DC converter and cut the power to the attached USB cable.

Pin 3 in CON1 (+5 volts input to supply measure the azimuth)- input stabilized voltage from power board This pin may be short connected (as picture below) with pin4 CON1 (+5 volts to interface), then the voltage measurement uses a common 5V voltage from the power supply module.

Connect DC Rotator (DB15 female) and power inputs(Edit)

  • Need three jumper
    • short DC position P6 jumper switch
    • short JP1 jumper
    • short PHASE-SW (center) position CON1

Connect AC Rotator (DB15 female) and power inputs(Edit)

Diagram for the common AC and +5V ground(Edit)

Diagram for the different AC and +5V ground(Edit)