Lowest power consumption

[T1j3ff]

Closing the screen
--> digitalWrite(4, LOW);

Closing Wifi+BT
--> WiFi.disconnect(true);
--> WiFi.mode(WIFI_OFF); // Switch WiFi off

Not reading the bat
--> digitalWrite(POWER_EN_PIN, LOW);

And going to deep sleep

Best I can get is ~22ma consumption on the USB

Seems the USB chip put itself to off when not powered, and this is fine
So about 7.7 ma , when reading power from only the Battery ( most relevant metric)

But still 7.7mA, is way to much considering the Esp32 could go in the uA range!
Any other idea ?

Seems to be a firmware available ,,,,
https://github.com/Xinyuan-LilyGO/TTGO-T-Display/tree/master/firmware

I've never done this type of upgrade
Is this to fix this ?

[T1j3ff]

Did the upload, With this tool
https://www.espressif.com/en/support/download/other-tools

It was suprisigly simple

The demo code can demonstrate a power down mode that I mesure down to 0.2mA in deep sleep.
This is cool
But my code still do 7.7mA
Will have to investigate further

[oculos]

Same problem here.
I get 17-19mA when connected to the USB. I haven't measured it only connected to the battery.