Hi everyone, this is my credit card size wireless sensor node,
with a 7-seg LCD display showing temperature & humidity, update every second.
using MSP430FR4133 with HDC1080,BMP180 and OPT3002,
transmit by nRF24l01, which sends out temp,humid,pressure,luminosity and also battery voltage per minute.
It is all power by a CR2032, and thanks to MSP430FR4133, I can manage to have half an year battery life. 
also thanks to MSP430RF4133 Launchpad with build-in energyTrace, I can estimate battery life with a click(no more oscilloscope 
)
note that I've actually put an RF430 on the down left ot the board(there is an antenna for that),
which will act as a NFC tag, but it draws too much current (~15uA), so I took it off
and at the down right is the battery voltage measurement with a mosfet to cut the power,
but I found out that I can just measure internal voltage reference to calculate its supply voltage, so I've also remove that.
although I'm pretty much satisfy with this power consumption, but I still think that 16.5uA is a little bit too far from estimating from datasheet
and I am still trying to figure that out 