Here we are starting innovation revolution in assam !
Innovation always relates to small small know how that add up to impact milllion times .
Can we make a solar security system, that runs forever ?
yes we can , but most systems need a 'battery replacement'
and we always have to change battery after 200cycle
also many systems need wiring ! who wants to wire up house with 6 pairs of wire for 6sensors
So most viable item for a lifetime charge discharge is super capacitor . As name suuggested the supercaps are huge capacity capacitors like 1000times more but have same size as normal caps .
Its a current limited SOLAr circuit ? the 15ohm 1watter is a limiter like 180mA current
other wise circuit make dead short if the supercap is there , that way the solar panel do not burn out .
A alternate current limiter is this CCS
diode does a minimal voltage drop. and prevents power flow on the reverse
for MCU with standby pin , the circuit 2 is enough