68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
//
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// Created by lukas on 10.04.20.
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//
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#include "Arduino.h"
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#define MINVOLTAGE 2.5
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#define OHM 4.9
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#define INTERVALTIME 5 // refresh interval in secs
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#define MEASUREPIN A3
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#define MOSFETPIN A2
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unsigned long oldtime = 0;
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void setup() {
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Serial.begin(9600);
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pinMode(LED_BUILTIN, OUTPUT);
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pinMode(MOSFETPIN, OUTPUT);
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pinMode(MEASUREPIN, INPUT_PULLUP);
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digitalWrite(MOSFETPIN, LOW);
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oldtime = micros();
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}
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unsigned int time = 0;
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double all = 0;
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void loop() {
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Serial.println();
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double voltage = (float) (analogRead(MEASUREPIN)) / 1024 * 5;
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if (voltage > MINVOLTAGE && voltage < 4.5) {
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digitalWrite(MOSFETPIN, HIGH);
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double current = voltage / OHM;
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double watt = current * voltage;
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double amphours = current / (3600.0 / INTERVALTIME); // every 10secs is a measurement point...
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all += amphours;
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Serial.print(all * 1000.0, 5);
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Serial.print("mA/h already captured after - ");
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Serial.print(time * INTERVALTIME);
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Serial.println("s");
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Serial.print("Watts: ");
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Serial.println(watt);
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Serial.print("Current: ");
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Serial.println(current);
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time++;
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} else if (voltage <= MINVOLTAGE) {
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digitalWrite(MOSFETPIN, LOW);
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Serial.print("FINISHED voltage below minvoltage - ");
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Serial.print(all * 1000, 5);
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Serial.print("mA/h in - ");
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Serial.print(time * INTERVALTIME);
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Serial.println("s");
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Serial.println("please restart the print");
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delay(999999999);
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} else if (voltage > 4.2) {
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Serial.println("no battery connected!");
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}
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Serial.print("Voltage: ");
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Serial.println(voltage);
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unsigned int delaytime = (micros() - oldtime) / 1000;
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Serial.println(INTERVALTIME * 1000 - delaytime);
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delay(INTERVALTIME * 1000 - delaytime);
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oldtime = micros();
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} |