Concept #
It is possible to mount either CR2032 or CR2477
Hardware #
board render
Schematics #
Board #
Top #
Bottom #
Module #
Application #
Firmware #
Low Power configuration #
Flags to clear |
---|
NRFX_UARTE_ENABLED |
NRFX_UART_ENABLED |
UART_ENABLED |
UART0_ENABLED |
NRF_FPRINTF_ENABLED |
NRF_LOG_BACKEND_UART_ENABLED |
NRF_LOG_STR_FORMATTER_TIMESTAMP_FORMAT_ENABLED |
NRF_LOG_ENABLED |
- removed nrf_drv_uart.c from Makefile
- Required nRF52832 Errata [89] TWI: Static 400 uA current while using GPIOTE
Low Power Measures #
Mode | Current |
---|---|
RTC + RAM | 9.6 uA |
// + Sensors | 22 uA |
// without TWI Woraround | 470 uA |
Uart Log | 500 uA |
Uart Log + HF | 700 uA |
- 250 us @ 12 mA
- 1.5 ms @ 3.5 mA
- 50 uA @ infinite
PPK-II Measures #
First wakeup #
wakeup cycle type 1 #
wakeup cycle type 2 #
sleep period #
BME280 vs MS8607 #
Thread sensortag
is using MS8607 andnRF52832 sensortag
is using BME280Thread sensortag
is sampling every 3 sec whilenRF52832 sensortag
every 40 secThread sensortag
has no case whilenRF52832 sensortag
is inside a PLA case
temperature #
humidity #
pressure #
MAX44009 vs VEML6030 #
Thread sensortag
is using VEML6030 andnRF52832 sensortag
is using MAX44009
light #