The supermini has a nrf52840 soc with 1MB of flash on board. It cost roughly 10€. The table below was just there to test the power draw of different hardware configurations.

Power draw ua psu Resistor state side
3500 stock stock normal left
2500 custom stock normal left
605 stock stock deepsleep left
665 custom stock deepsleep left
260 stock stock normal right
570 stock stock deepsleep right
120 stock custom normal/typing right
100 stock custom normal right
2.5 stock custom deepsleep right
2500 custom custom normal left
54 custom custom deepsleep left
100 custom custom normal right
330 custom custom normal left

Vcc battery 3.46V

Custom PSU xc6220 Custom resistor 10Mohm

Nice Nano

Power draw ua psu Resistor state side
380 stock stock normal left

Modification

MAC mod
C0:65:75:2E:8E:7F psu changed