AMPLIFIER CONTROL

Arduino Mega Based Control System

This is a control system developed by Bill, N2VSD, who has graciously agreed to share it with us. To duplicate this system you will need:

• Arduino Mega or clone

• 3.2" LCD from Adafruit

• INA196 Breakout board from Adafruit

• Suitable enclusure

• Heatsinl

• Fan

• 50V 4A power supply

• 50V to 12V DC-DC Buck Converter

• Input and Output connectors

• Perseverance

Connections to Mega

Display pinout  

mega pin #     Display pin

5v                vin

gnd             gnd

A2               Y+ (for touch screen use)FUTURE

A3               X- (for touch screen use)FUTURE

8                  reset  (RST)

42                CCS (42 for mega)

44                Y- (44 for mega)  FUTURE

46                X+ (46 for mega)  FUTURE

48                DC (48 on mega * change define)

50                MISO  (50 for mega)

51                MOSI (51 for mega)

52                CLK (SCK) (52 for mega)

mega pin #    

A0               fwdPin A0 forward power  input

A1               refPin A1 Reflected power input

A4                   Drain Current from Adafruit INA169 board

A5                   Drain Voltage with a 10:1 resistive divider

2                  output to pin 2 on filter board

3                  output to pin 3 on filter board

4                  output to pin 4 on filter board

5                  txPin 5  tx input grounded = ON

6                  txOut 6 output to tx/rx board 5v = tx

10                bandSw 10  push button for changing bands

11                ONE_WIRE_BUS 11 for temperature sensor

12                fanPin  12    turns fan On & Off

13                speedPin  13    adjust fan speed PWM

14                biasPin 14 to pa bias control 5v=bias off