fablabbcn
SCK2.2 - SCK2.3 reset loop
The SCK2.2 and SCK2.3 have an issue on boot while powered only via USB. This does not happen consistently, but is fairly easy to reproduce with the normal USB charger provided and with the SEN5X and the urban board, but without a battery:
This is due to the higher cumulative energy consumption by several systems, but more importantly, because the SEN5X has a peak consumption at boot that seems higher that the PMS5003, even if the sensor consumes less power on normal operation.
https://github.com/fablabbcn/smartcitizen-kit-2x/blob/49b152fa4a6e463bb01d49c4d816b2ea46f17be3/sam/src/SckUrban.cpp#L2103-L2107
I will add more graphs here showing the consumption during boot. Posibly related to fixes in https://github.com/fablabbcn/smartcitizen-kit-2x/pull/97
