Smart Digital Amplifier Monitoring Controller

Realtime-Programmable Digital Amplifier Control-Monitor System

• Isolation, Realtime, PC-UI Programmable, FreqResponse Adjust, Harman Curve
• Digital Filter/Parameter Selection
• LDR volume control/detection
• LED Status?
• OLED Status?
• Encoder Adjustment?
• Electronic Volume
• Buffer OP Selection
• PC-local-bluetooth GUI adjustment
• Wireless
• I2C/SPI Device integrated like BME280
• Temp-Volt-Current-VS-Time PC Logging

Monitor:

• Bias
• DC offset
• Temp
• Current/Voltage Supply
• THD
• Gain

Controlling:

• Vbe Bias
• Idle Current
• Negative FB
• Protection Sensitivity
• Input Source
• Gain
• Relay---R/L/C Selection
• Soft-start, DC protection
• Impedence Control
• Feedback point select
• Servo on/off
• PSU Voltage, Kind
• Grounding Point Selection, Ground Lift on/off
• Programmable Temp, or constant temp!

#include <math.h>

#include "LiquidCrystal.h"

#define RELAY 8   

LiquidCrystal lcd(6,7,5,4,3,2);

float A = 1.009249522e-03, B = 2.378405444e-04, C = 2.019202697e-07;

float T,logRt,Tf,Tc;

float Thermistor(int Vo) {

 logRt = log(10000.0*((1024.0/Vo-1))); 

 T = (1.0 / (A + B*logRt + C*logRt*logRt*logRt));  // We get the temperature value in Kelvin from this Stein-Hart equation

 Tc = T - 273.15;                 // Convert Kelvin to Celcius

 Tf = (T * 1.8) + 32.0;           // Convert Kelvin to Fahrenheit

 return T;

}

void setup() {

 lcd.begin(16,2);

 lcd.clear();

pinMode(RELAY, OUTPUT); 

}

void loop() {

  lcd.setCursor(0,0);

  lcd.print("Temperature:");

  lcd.print(int(Thermistor(analogRead(0))));

  lcd.print("C ");

  delay(500);  // wait 0.5 seconds before sampling temperature again

if (Tc > 28) digitalWrite(RELAY, HIGH),lcd.setCursor(0,1),lcd.print("Light status:ON "),delay(500);

else if (Tc < 28) digitalWrite(RELAY, LOW),lcd.setCursor(0,1),lcd.print("Light status:OFF"),delay(500); }