Code zur Kapazitätsmessung des
verwendeten Akkus
Entwicklungsumgebung:
Arduino IDE Version 1.8.12
Verwendetes Bord: ATmeaga328P (old
Bootloader)
Die Ausgabe des Mikrocontrollers kann auf einem
Seriellen Monitor ausgegeben werden; die Baudrate beträgt 115200.
Die Ausgegeben werte können einfach aus der Konsole als Dateinimport
in Excel eingelesen werden.
download Capacity_Tester.cpp
download Akkumessung.xlsx
Code beginnt hier:
// Const
const int DATAPOINTS = 40;
const double vFull = 4.2;
const
double vEmpty = 3.0;
// Data
double readvoltage;
double
voltage[DATAPOINTS];
unsigned long time[DATAPOINTS];
int
samplecount = 0;
double startvoltage;
// timemesurement
unsigned long starttime;
void setup() {
Serial.begin(115200);
double delta = (vFull - vEmpty) /
(DATAPOINTS - 1);
voltage[0] = vFull;
voltage[DATAPOINTS-1] =
vEmpty;
for (int i = 1; i < DATAPOINTS - 1; i++)
{
voltage[i] = voltage[i - 1] - delta;
}
Serial.println("messurement points:");
for (int i = 0; i <
DATAPOINTS; i++)
{
Serial.println(voltage[i]);
}
startvoltage = double(analogRead(A0)) / 1024 * 5;
starttime =
millis();
}
void loop() {
if (samplecount >=
DATAPOINTS)
{
Serial.println("End of messurement");
Serial.print("0 ");
Serial.println(startvoltage);
for (int i =
0; i < DATAPOINTS; i++)
{
Serial.print(time[i]);
Serial.print(";");
Serial.println(voltage[i]);
}
while
(true) {}
}
readvoltage = double(analogRead(A0)) / 1024 *
5;
if ((readvoltage <= voltage[samplecount]) && (samplecount <
DATAPOINTS))
{
time[samplecount] = millis() - starttime;
Serial.print(time[samplecount]);
Serial.print(";");
//Serial.print("0 ");
Serial.println(voltage[samplecount]);
samplecount++;
}
delay(100);
//Serial.println(double(analogRead(A0)) / 1024 * 5);
}
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