6x2 Antenna switch control
The hardware
How to connect Power
- Plug DC jack 5,5 outer, 2,1 mm inner size.
- Connect 12-15V DC power voltage. Current dependency to connected antenna switch, alone controller about 60mA.
Front side
- LCD - shows selected antenna - first line Input/Output 1, second line Input/Output 2
- MENU - light button. For activate press button more than 0,5 second. Green light signals if manual control activate.
- ENCODER - rotary encoder primary move cursor, after activate MENU you can select antenna outputs manual or back activate BCD inputs.
Rear side
- DC POWER - input jack 5,5/2,1 mm size for DC power between 12-14 Volts. Same Power on pin8 ANT outputs.
- ETHERNET - OPTIONAL module for controlled switch manual over simple web page.
- microSD - not implemented.
- BCD IN - band data inputs activate two levels, dependency to JP8 jumper
- HIGH - TTL voltage input
- LOW - grounded input (contains own 1k pull up resistor)
- PTT TRX - grounded activate input PTT from transceiver (contains own 1k pull up resistor)
- PTT PA - PTT continues from TRX to this output for power amplifier. If detect collision between inputs band, this output will be deactivate.
- ANT - six outputs, will be in two levels dependency to preset JP1 and JP2 jumper. Also 12V DC power and ground available.
- ULN if use internal driver ULN2803A - open collector 500 mA each outputs
- UDN if use internal source 12V power driver UDN2580A.
Left side
- From the left side is accessible USB mini connector from Arduino NANO, which is usable for upload new firmware.
Diagram
- Schematics rev 0.3 .SVG
- PCB rev 0.3 .PDF
- Interactive BOM
- Block
Board preset
Before opening has to be removed eight screws
- three on left side
- three on right side
- two on rear side, near double cinch.
LCD contrast
- with potentiometer RV1 - near left side LCD module
Inputs BCD Levels
- JP8 to HIGH - activate BCD inputs with TTL signal level (1k ohm pull-down resistor).
- And uncoment line in firmware
#define inputHigh // enable input High level (default)
- JP8 to LOW - activate BCD inputs to ground (1k ohm pull up resistor).
- And coment line in firmware
//#define inputHigh // enable input High level (default)
Outputs Antenna switching
This jumper must be set dependency to used U4 and U7 IO chip - do not change before change chip!
ULN - for ULN2803A open collector driver - switching antenna relay with grounded outputs.
UDN - for UDN2580A source 12V power driver - switching antenna relay with 12V power outputs.
Cable connect
- BCD IN - Input band data from TRX 1 or 2
- Antenna outputs - Switched anntenas for TRX 1 or 2
- PTT TRX - input PTT cinch from transceiver (grounding activate).
- PTT PA - output PTT cinch to power amplifier - if controller detect collision, disconnect signal from transceiver PTT.
- 12V - DC Power input (positive center) 12-14V. Same Power on pin8 ANT outputs.
Firmware
Upload
Band decoder settup is performed via firmware source code. It is compile and upload to device with Arduino GUI.
- For beginners Getting Started with Arduino.
- Connect mini USB connector on left side enclosure.
- Download source code and open in GUI.
- Select menu
- Tools/Board/Arduino nano
- Tools/Procesor/ATmega328
- Tools/Port/<your port>
- If enable Ethernet
- Download ethernet2 library https://github.com/adafruit/Ethernet2
- Find and open file Dhcp.h and replace line
from int beginWithDHCP(uint8_t *, unsigned long timeout = 60000, unsigned long responseTimeout = 5000); to int beginWithDHCP(uint8_t *, unsigned long timeout = 6000, unsigned long responseTimeout = 5000);
Configure
- Description antennas - show on LCD and web page, firt and last line do not change
char* ant[] = { "All OUT off", // <-- do not change this line "160m Vert.", " 80m Dipole", " 40m Moxon", " 30m Dipole", " 20m 2x 5el", " 10m 4x 6el", "M-off->BCD", // <-- do not change this line };
- Inputs level - changing inputs level also need set JP8 jumper. Before opening enclosure has to be removed eight screws (three on left side, three on right side, two on rear side).
- Set JP8 to HIGH - activate BCD inputs with TTL signal level (1k ohm pull-down resistor). And uncoment line
#define inputHigh // enable input High level (default)
- Set JP8 to LOW - activate BCD inputs to ground (1k ohm pull up resistor). And coment line
//#define inputHigh // enable input High level (default)
- Number of inputs
#define Inputs 6 // number of antenna used
- Number of ports
#define Ports 2 // number of - IN/OUT pair devices and LCD lines (support from 2 to 4)
- LCD culumn
#define LCDculumn 16
- Serial Echo, show status on serial interface
//#define serialECHO // enable TX echo on serial port #define SERBAUD 9600 // [baud] Serial port baudrate
- Ethernet - before enable in firmware need open enclosure and instal optional module USR-ES1.
//#define EthModule // enable Ethernet module
- Ethernet addres may be get automatically from DHCP server - for enable uncoment line
#define __USE_DHCP__ // Uncoment to Enable DHCP
- Static IP address (if DHCP disable) set in this lines
IPAddress ip(192, 168, 1, 220); // IP IPAddress gateway(192, 168, 1, 200); // GATE IPAddress subnet(255, 255, 255, 0); // MASK IPAddress myDns(8, 8, 8, 8); // DNS (google pub) EthernetServer server(80); // web server PORT
BCD IN OUT matrix table
Set the last two lines (value between 0 to 6) how outputs represent BCD input value.
--------------------------------------------------------------------------------------- Input levels BCD-1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 BCD-2 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 BCD-3 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 BCD-4 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 --------------------------------------------------------------------------------------- Band # input 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 (Yaesu Band) 160 80 40 30 20 17 15 12 10 6m --------------------------------------------------------------------------------------- | | | | | | | | | | | | | | | | V V V V V V V V V V V V V V V V */ { 0, 1, 2, 3, 0, 4, 0, 5, 0, 6, 0, 0, 0, 0, 0, 0 }, /* --> ANT-1 OUTPUT */ { 0, 1, 2, 3, 0, 4, 0, 5, 0, 6, 0, 0, 0, 0, 0, 0 }, /* --> ANT-2 OUTPUT
This example activate non WARC bands.