Display the voltage of the battery of the TTGO T-Beam on the screen about lora_aprs_tracker HOT 4 CLOSED

thanks for the ticket, unfortunately I did not had time today, but i will fix it in the next days!
I was thinking of sending the battery voltage as a telemetry data, so aprs.fi can generate graphs etc. what do you think?

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Please have a look at my pull request. Battery voltage and (dis)charge current are are displayed.
Telemetry is still to-do.

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Good idea for the telemetry ...
Piece of code I found in another project on github :

#define BATTERY_PIN 35 // battery level measurement pin, here is the voltage divider connected
void getBatteryVoltage()
{
// we've set 10-bit ADC resolution 2^10=1024 and voltage divider makes it half of maximum readable value (which is 3.3V)
vBat = analogRead(BATTERY_PIN) * 2.0 * (3.3 / 1024.0);
Serial.print("Battery voltage: ");
Serial.print(vBat);
Serial.println("V");
}

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Thanks for the Pull Request, I merged it into mainline.

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