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externalBatdivider

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richonguzman 2024-06-27 15:39:53 -04:00
parent b8446e3f1d
commit e846c38f97
3 changed files with 26 additions and 14 deletions
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12
src/battery_utils.cpp
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@ -12,12 +12,8 @@ bool shouldSleepLowVoltage = false;
float adcReadingTransformation = (3.3/4095);
float voltageDividerCorrection = 0.288;
// for External Voltage Measurment (MAX = 15Volts !!!)
float R1 = 100.000; //in Kilo-Ohms
float R2 = 27.000; //in Kilo-Ohms
float readingCorrection = 0.125;
float multiplyCorrection = 0.035;
float readingCorrection = 0.125;
float multiplyCorrection = 0.035;
namespace BATTERY_Utils {
@ -81,8 +77,8 @@ namespace BATTERY_Utils {
sampleSum += sample;
delayMicroseconds(50);
}
float voltage = ((((sampleSum/100)* adcReadingTransformation) + readingCorrection) * ((R1+R2)/R2)) - multiplyCorrection;
float voltageDividerTransformation = (Config.battery.voltageDividerR1 + Config.battery.voltageDividerR2) / Config.battery.voltageDividerR2;
float voltage = ((((sampleSum/100)* adcReadingTransformation) + readingCorrection) * voltageDividerTransformation) - multiplyCorrection;
return voltage; // raw voltage without mapping