02/25/2021 at 20:52 •
02/25/2021 at 20:30 •
To run a more powerful solarpanel the power waste cycle should consume as much power as possible. So i changed the MCU clock speed to 48MHz.
I was curious what the impact would be on the overall power consumption i plotted a comparsion between the voltage drop via 24 MHz & 48 MHz.
02/25/2021 at 20:12 •
Voltage drop over time (mV / hours of day)
Charged 1.5F to 3.6V and let the thermometer run with 48MHz. Advertising interval 10s, measurement is done via plotting internal ADC values.
Below 2.0 V, the LCD is barely readable, but the Bluetooth transmission still works. This small voltage gap at around 2380mV seems to occure everytime, so something must drain power at this voltage.