using the sketch “LowPower_WakeUpByTimer.ino” example with CubeCell Board I meassure battery current:
- 11,26mA during on Time
- 0,83mA during sleep time
The current is meassured at SH1.25-2 battery interface. On https://heltec.org/project/htcc-ab01/ I read: Ultra low power design, 3.5uA in deep sleep;. What do I have to do to reduce current to max. 50uA or even better to 3.5uA?
On CubeCell Potential Issues Sleep Power and Settings Use I read about 20uA which would be OK for me. Is this not possible with wakeuptimer running?
After I have connected USB and diconnected the current changes from 19mA to 0,83mA during wakeup / sleep. Maybe something get initialized with usb connected? How can I disable this behavior?