I do have OPLA IoT Kit I inserted 18650 battery from my old laptop and it works fine. I can disconnect from USB and is running overnight.
My question is when I have connected via USB does it charge battery ? or I need to charge separately?
Yes the battery charges when plugged into USB.
thanks for your reply, I guess I need to solve my issue now with turning the display off
any idea if it could be possible to Monitor the Battery Level - Voltage? so it will send be signal when level below a certain threshold?
turn off backlight:
pinMode(3, OUTPUT);
digitalWrite(3, LOW);
turn on backlight:
digitalWrite(3, HIGH);
just an idea to read de ADC_BATTERY (@ A32)
delay(100);
int Batt = analogRead(ADC_BATTERY);
delay(100);
Serial.print("batt read:");
Serial.println(Batt);
int batteryLevel = map(Batt, 0, 1023, 0, 420); //need callibration agaist AREF
Serial.print("batt Volts:");
Serial.println(batteryLevel);
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