Wi-Fi station & Solar Powered Smart-phone Chargers with a Money
Multi Coin Selector
ABDELHADI SLAMI, MAMA BOUCHAOUR, LAAREJ MERAD
University of Tlemcen, Faculty of Sciences, Department of Physics
Unité de Recherche « Matériaux et Energies Renouvelables », URMER,
BP: 119, Tlemcen, 13000, ALGERIA
Abstract: -The main aim of this study is to present a Wi-Fi station and smart-phone chargers with a money multi
coin selector operated through solar energy. Specifically, this study aimed to achieve the following objectives:
1) Determine a solar panel that is appropriate for providing power for a phone charging station. 2) Determine a
suitable timing system for providing mobile phone charging services. 3) Determine the acceptability of the
device based on the following: a) Physical features; b) Cost; c) Durability; d) Operation. This device is mainly
aimed for commercial use since it can require a certain fee for a specified period to charge a mobile phone. It
makes possible to highlight two principles of environmental conservation and green economy (using the solar
PV) as well as the opening of the workstation.
Key-Words: -Wi-Fi stations, smart-phone chargers, solar celss, solar energy
Received: December 16, 2023. Revised: August 11, 2024. Accepted: September 15, 2024. Published: October 7, 2024.
1. Introduction
Carbon dioxide and other greenhouse gas
emissions that contribute to global warming are
not produced by solar photovoltaic energy [1]. It
increases the flexibility of power systems in
response to changes in electricity demand, lowers
emissions and pollutants from conventional
energy systems, lessens dependency, and
minimizes expenditure on imported fuels, all of
which contribute to improved access to clean
energy sources [2, 3].
The primary objective of the solar photovoltaic
system is to wirelessly transfer the electrical
energy produced for use in a variety of small-
scale power applications. Wireless power may be
used to charge devices and serve as an input
source for electronic devices like MP3 players
and cellphones [3].
A cell phone is among the most widely used
forms of communication available today, mostly
due to technological improvements. It is also one
of the most reasonably priced tech devices
available [2].
On the other hand, the Strategy Analytics
research projects that by 2023, there will be an
average of 4.3 mobile devices per person, since
the number of devices will keep rising. There is a
race on to create a world that is ever more
interactive, communicative, and linked.
Autonomy, however, continues to be the primary
barrier to this advancement. To combat this issue,
substitute solutions have been created. [4].
The Wi-Fi station and solar-powered mobile
phone charging station with a multi-coin selector
are part of this set. Furthermore, offer Wi-Fi so
that people may use their phones or computers to
quickly and efficiently connect to and recharge
both indoor and outside infrastructures. For this
project, we decided to build a Wi-Fi station and a
solar-powered smartphone charger with a money
multi-coin selection.
2. Design and Realization
One of the most often used forms of
communication nowadays is the cell phone. It is
among the least expensive electronic devices
available. The mobile phone is now a
multifunctional device that can process emails,
photos, and other data due to the integration of
numerous systems and devices [5, 6]. Cell
phones, like many other electronic devices,
depend on electric current to carry out their
various tasks, hence they need to be charged
periodically. especially with Android phones,
which drain batteries far more quickly than other
types of phones.
To solve the problem, we decided to create a WiFi
station with an Arduino-programmed multi-coin
International Journal of Applied Sciences & Development
DOI: 10.37394/232029.2024.3.15
Abdelhadi Slami, Mama Bouchaour, Laarej Merad
E-ISSN: 2945-0454
161
Volume 3, 2024
selection and a solar-powered [7] cell phone
charging station. It stands for a different approach
to powering electronics.
Figure 1 presents the conceptual model. It is
componed of Input, Process and Output [4].
Input: Take account on the setup of equipment’s
as well as materials.
Process: In the process all the equipment have to
be tested.
Output: The output stage is the operational solar
powered charging station. The project foretells
also the limitation.
Figure 1. Conceptual model of the study.
The structure of the station is in aluminum,
stainless steel or other non-corrosive material. It
gives it greater stability. The station is mobile,
with four wheels equipped with a braking system
in order to facilitate its movement and positioning
in complete safety.
These stations are equipped with multi-coin
money detector programmed with the Arduino
board.
The used type of multi coin selector is CH-926
type. The diagram of the Wifi station & solar
charger is shown in figure 2.
Figure 2-a : System block diagram
Planning
Design
Materials
Installation
Testing and Calibration
Operation
Functionality of solar
Powered Charging Station
Limitation
Processs
Two polycrystalline solar
panels
(150 Wp - 12 V)
Solar regulator
30 A - 12/24 V
Two sealed slow
discharge batteries,
12 V - 110 Ah.
Device to be charged
Inverter 24V DC
International Journal of Applied Sciences & Development
DOI: 10.37394/232029.2024.3.15
Abdelhadi Slami, Mama Bouchaour, Laarej Merad
E-ISSN: 2945-0454
162
Volume 3, 2024
Figure 2-b: wifi station & solar charger.
2.1. Content of the solar kit
For the design, the solar charging station [8, 9-10]
is compounded of the following subsystems:
Two polycrystalline solar panels of 150
Wp - 12 V
Specific solar cable between the panel
and the regulator.
Solar regulator (30 A - 12/24 V).
Two sealed slow discharge batteries, 12
V - 110 Ah.
Inverter that converts the 24 V DC (direct
current) from the battery into 220 V AC
(alternating current) identical to the
network – 600 VA (600 W).
Protection box that can accommodate up
to 4 circuit breakers, 2 16 A circuit
breakers and a 10 A are integrated in the
kit to protect the panel, the battery and the
24 V output. A circuit breaker can be
added for an inverter.
2.2. Energy needs assessment
Generally, in wifi & smart phone charger
stations [8, 11- 12], we are interested in mobile
phones and portable microphones. From this
material, we calculated the energy consumed
during each use. These results are reported in
Table 1.
Device
Energies
(Wh)
10 Smart phones (10W for
each phone)
100 w x 8
hours
4 Micro portables (40 W
for each micro)
160 w x 4
hours
Table 1: Electrical equipment used in the station
2.3. Schematic plan (CH-926/Arduino) and
source code
A coins lot is a device used in vending
machines responsible for checking whether a coin
conforms to a given value. More recent models
usually accept a whole series of coins and sort
each according to its value. The schematic plan is
as shown in figure 3.
International Journal of Applied Sciences & Development
DOI: 10.37394/232029.2024.3.15
Abdelhadi Slami, Mama Bouchaour, Laarej Merad
E-ISSN: 2945-0454
163
Volume 3, 2024
Figure 3 : Schematic plan of CH-926 / Arduino
In this example we want to program 1 coin type:
50 DA coin1 impuls.
Here is the procedure how to program the
acceptor to recognize a set of 1 coin.
1. We start by pressing + and - buttons together
until A is displayed.
2. After pressing Setup button E should be
displayed.
3. With + - buttons we select number of types of
coins. 1 in our case.
4. After pressing Setup again H1 is displayed.
Here with + - we select number of sample
coins we would use to program this first type
of coin.
5. After pressing Setup again P1 is displayed.
Here we select number of impulses that would
represent the first coin. In our case it will be 1
impulse for first coin.
6. After accepting it with setup button is
displayed. Here we set sensitivity
(Recommended value = 6).
7. When done LED display again shows A. After
pressing Setup it changes to E. At this stage we
can power off coin acceptor.
8. When pressed again we get A1 and we are
ready to sample first coin. Slot the coins one
by one.
9. When done indicator LEDs blink. The coin
acceptor is ready to be programmed with the
Arduino and used with the relay module in our
station.
3. Conclusion
The main goal of this project is to design a mobile
phone charging station that runs on solar
electricity.
Running out of battery life pisses up smartphone
addicts more than anything else. In isolated and
open tourist regions, it can help young people find
work by building a prominent solar station. In the
case that it does not, the installation will carry on
operating autonomously at any location where it
will be beneficial to all parties (for example,
phone charging stations used during the 2022
Mediterranean Games in Oran or other events).
These stations are found in public areas such as
retail malls, airports, hotels, and campuses.
References
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E-ISSN: 2945-0454
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Contribution of Individual Authors to the Creation
of a Scientific Article (Ghostwriting Policy)
Abdelhadi Slami, making the arduino card.
Mama Bouchaour and Laarej Merad carried out the
simulation and the optimization.
Sources of Funding for Research Presented in a
Scientific Article or Scientific Article Itself
No funding was received for conducting this study.
Conflict of Interest
The authors have no conflicts of interest to declare that
are relevant to the content of this article.
Creative Commons Attribution License 4.0
(Attribution 4.0 International, CC BY 4.0)
This article is published under the terms of the
Creative Commons Attribution License 4.0
https://creativecommons.org/licenses/by/4.0/deed.en
_US
International Journal of Applied Sciences & Development
DOI: 10.37394/232029.2024.3.15
Abdelhadi Slami, Mama Bouchaour, Laarej Merad
E-ISSN: 2945-0454
165
Volume 3, 2024