Hi am Dipali i would like to get details on coin operated mobile phone charger using microcontroller ..My friend Sneha said coin operated mobile phone charger using microcontroller will be available here and now i am living at ichalkaranji and i last studied in the college/school sitcoe and now am doing UG IN 3rd year i need help on all details of mobile charging on coin insertion &also code for it.

Usually ordinary solar panel is always faces
only in one direction. Because of this reason the solar
panel may not get sufficient sun rays to work. In this
work SOLAR PANEL CONTROLLER AND POWER
OPTIMIZATION is done in order to overcome this
defect. Here the panel will rotate according to the
readings read by the LDR. So it will utilize the full sun
light to work & power optimization is also done by using
the LDR.
This work mainly designed to control the solar
panel automatically, maintains face of the solar panel
towards the sun. This is done by controlling the
mechanical movement of the solar panel. Usually sun
rises at east and sets at west. In ordinary system, if it
faces towards east then it cannot change the direction
towards sun during sunset. Because of this reasons
solar panel may not get sufficient sun rays to work.
These problems are overcome by using this
work. In this work we also build a very good micro
controller based solar charger. The coin-based mobile
battery charger developed in this work providing a
unique service to the rural public where grid power is not
available for partial/full daytime and a source of revenue
for site providers. The coin-based mobile battery charger
can be quickly and easily installed outside any business
premises.
The mobile phone market is a vast industry,
and has spread into rural areas as an essential means
of communication. While the urban population use more
sophisticated mobiles with good power batteries lasting
for several days, the rural population buy the pre owned
mobile phones that require charging frequently.
Many times battery becomes flat in the
middle of conversation particularly at inconvenient times
when access to a standard charger isn't possible. The
coin-based mobile battery chargers are designed to
solve this problem. The user has to plug the mobile
phone into one of the adapters and insert a coin; the
phone will then be given a micro-pulse for charging. It
does not bring a mobile from 'dead' to fully charged
state.
The charging capacity of the mobile is
designed with the help of pre defined values. It is, of
course, possible to continue charging the mobile by
inserting more coins. This compact and lightweight
product is designed to cater for the growing number of
rural mobile users worldwide. A suitable microcontroller
is programmed for all the controlling applications. The
source for charging is obtained from direct power grid
and solar energy in case of non availability of grid
power.