Objectives

• To design a solar-powered battery charging system using a PIC microcontroller.
• To monitor solar panel and battery voltages using voltage sensors.
• To control battery charging and load operation efficiently through a boost converter.
• To display system parameters on an LCD for real-time monitoring.
• To provide a reliable and eco-friendly power supply for LED lighting applications.

Components used:

• SOLAR.
• CHARGING CIRCUIT.
• BATTERY.
• PIC MICROCONTROLLER.
• VOLTAGE SENSORS.
• Boost converter.
• LCD display.
• LEDs.
• Crystal Oscillator.
• Reset Button.
• LED indicators.

Software’s used:

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

Regulated power supply:

video:

The transmission section is powered by solar energy, stored in a battery, and managed by a Arduino Nano microcontroller. An RFID system ensures authorized vehicle access. The power is wirelessly transmitted through eight relay-controlled coils, activated by infrared (IR) sensors and a pulse generator.

The receiving section is embedded in the EV and includes a copper coil connected to a charging circuit that transfers energy to the vehicle’s battery. An ESP-32 microcontroller monitors voltage levels via a voltage sensor, while an IR sensor detects the presence of charging zones. The DHT-11 sensor measures environmental conditions. A relay circuit manages power to four DC motors, and data is uploaded to ThingSpeak for remote monitoring.

This innovative IoT-enabled wireless charging system eliminates the need for frequent plug-in charging, offering a seamless and sustainable solution for electric vehicle users. The status of the project will display on LCD. To achieve this task Arduino Nano microcontroller loaded program written in embedded C language.

Features:

1. Solar-Powered Charging: Uses solar energy for sustainable power generation.
2. Wireless Power Transfer: Eliminates the need for physical charging cables.
3. RFID Authentication: Ensures only authorized vehicles receive power.
4. IR Sensor-Based Activation: Detects vehicle presence to activate charging coils.
5. IoT-Based Monitoring: Uses ESP-32 and ThingSpeak for real-time data tracking.
6. Arduino Microcontroller Control: Manages power distribution and relay operation.
7. Pulse Generator & Relays: Controls power transfer to charging coils.
8. DHT-11 Sensor: Monitors environmental conditions during charging.
9. Voltage Sensor Feedback: Ensures safe and efficient charging.
10. DC Motor Control: Enables powered vehicle movement during charging.

The major specifications of the modules used in the project are:

• Solar Panel: 12V–24V output for renewable energy.
• Arduino Microcontroller: 5V operation, multiple I/O pins.
• ESP-32: 3.3V, built-in Wi-Fi & Bluetooth for IoT.
• RFID Module: 13.56 MHz frequency for authentication.
• IR Sensors: 3.3V–5V, detects vehicle presence.
• DHT-11 Sensor: 0°C–50°C, 20%–90% RH humidity range.
• Voltage Sensor: 0V–25V range for battery monitoring.
• Relay Modules: 5V/12V for power control.
• Pulse Generator: Activates charging coils.
• Copper Coils: Enables inductive power transfer.
• ThingSpeak IoT: Real-time data logging & monitoring.
• DC Motors (4x): 6V–12V, powers vehicle movement.

Block diagram:

video:

The main objectives of this project are:

• Develop a Smart Cleaning Robot: Design an semi-autonomous cleaning robot capable of vacuuming, mopping, and dusting surfaces.
• Solar-Powered Operation: Utilize solar energy to charge the battery, reducing dependency on external power sources.
• Wireless Control: Enable control via an Android mobile phone using Bluetooth communication (HC-05 module).
• Efficient Cleaning Mechanism: Implement motor-driven brushes, a vacuum cleaner, and a water pump for thorough cleaning.
• Microcontroller-Based System: Use a PIC microcontroller to control various components efficiently.
• Automation & Indicators: Integrate LED indicators for status updates and relays for switching operations.

The major building blocks of this project are:

• Solar power.
• Charging circuit.
• Rechargeable Battery.
• PIC Microcontroller.
• Reset Button.
• DC Motors with driver.
• Vacuum cleaner.
• Brushes.
• Bluetooth.
• Relays.
• Water pump.
• Crystal oscillator.
• LED Indicators.

Software’s used:

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

Block Diagram:

video:

A solar panel is a large flat rectangle, typically somewhere between the size of a radiator and the size of a door, made up of many individual solar energy collectors called solar cells covered with a protective sheet of glass. The cells, each of which is about the size of an adult’s palm, are usually octagonal and colored bluish black. Just like the cells in a battery, the cells in a solar panel are designed to generate electricity; but where a battery’s cells make electricity from chemicals, a solar panel’s cells generate power by capturing sunlight instead. They are sometimes called photovoltaic cells because they use sunlight (“photo” comes from the Greek word for light) to make electricity (the word “voltaic” is a reference to electricity pioneer Alessandro Volta).

The project makes use of a solar panel. The Solar energy obtained is stored to a battery. The battery supply is fed to pulse generator and in turn to a MOSFET which is capable of generating ON/OFF pulses of different frequencies. This is fed to a step-up transformer to generate a low voltage AC. This AC is fed to electrical appliance.

The major building blocks of this project are:

1. solar.
2. Charging circuit.
3. Rechargeable battery.
4. Inverter.
5. Load.

Block Diagram:

video:

Maximum Power Point Tracking, frequently referred to as MPPT, is an electronic system that operates the Photovoltaic (PV) modules in a manner that allows the modules to produce all the power they are capable of. MPPT is not a mechanical tracking system that “physically moves” the modules to make them point more directly at the sun. MPPT is a fully electronic system that varies the electrical operating point of the modules so that the modules are able to deliver maximum available power.

In the proposed converter, the input DC voltage can be boosted by the boost converter and this boosted voltage is stored into the rechargeable battery and then interfaced with the H-BRIDGE inverter circuit. The battery supply is fed to pulse generator and in turn to a MOSFET which is capable of generating ON/OFF pulses of different frequencies using PWM technique. This is fed to a step-up transformer to generate a low voltage AC to the grid. This AC is fed to loads like bulbs, devices.

The main controlling device of the whole system is PIC Microcontroller. Solar panel, DC-DC converter, inverter and load are interfaced to PIC Microcontroller. The PIC Microcontroller initially measures the voltage from solar panel. The Microcontroller takes the decision of operating the load through PWM (Pulse Width Modulation) until the maximum voltage is obtained from solar panel without degrading the load performance. To perform this intelligent task, Microcontroller is loaded with an intelligent program written using embedded ‘C’ language.

The main objectives of the project are:

1. Bringing out maximum energy from solar panel without mechanical tracking.
2. Usage of DC-DC converter circuit
3. Inverter based AC load control
4. MOSFET based switching circuitry
5. PWM (Pulse Width Modulation) usage.

The major building blocks of this project are:

1. Regulated power supply.
2. PIC Microcontroller.
3. Solar panel.
4. DC-DC boost converter.
5. H-BRIDGE Inverter.
6. MOSFETs
7. Battery
8. Crystal
9. Reset button.
10. LED Indicators.
11. AC load.

Software’s used:

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

Block diagram:

video:

The core of the system is an Arduino UNO microcontroller, which gathers environmental data from a DHT11 temperature and humidity sensor and monitors power levels using a voltage sensor. Based on the ambient temperature, the Arduino activates a DC fan via a transistor switch, offering automated thermal regulation.

To enhance user interaction and remote monitoring capabilities, the system includes an LCD display for real-time local readings and an ESP8266 Wi-Fi module for wireless data transmission. Sensor data along with battery status is uploaded to the WEB dash board, enabling users to track environmental conditions and system performance remotely via the Internet of Things (IoT) infrastructure.

This solution demonstrates a sustainable and intelligent approach to climate control using renewable energy, IoT connectivity, and smart automation, making it suitable for homes, greenhouses, and other off-grid applications.

Objectives:

• To design a solar-powered system for energy-efficient operation.
• To automate DC fan control based on temperature and humidity.
• To monitor voltage levels of the solar and battery system.
• To enable real-time data display on an LCD screen.
• To implement IoT connectivity using the ESP8266 Wi-Fi module.
• To upload sensor data to the web for remote monitoring.

The major building blocks of this project are:

• Solar Panel.
• Charging circuit.
• LM2596.
• Relay.
• Rechargeable battery.
• Arduino UNO.
• DHT11(Temperature and humidity) sensor.
• LCD display.
• DC fan.
• Esp8266 WI-FI module.
• Relay.

Software Used:

• Arduino IDE studio compiler for Embedded C programming.
• Express SCH for Circuit design.
• WEB technology.

video:

The major building blocks of this project are:

• Solar panels.
• GRID(transformer).
• PIC microcontroller.
• Charging Circuit.
• AC-DC Converter.
• Rechargeable battery.
• Inverter.
• EV Charger.

Software’s used in this project:

1. PIC Compiler for Programming.
2. Express SCH for Circuit design.

Block Diagram:

video:

In addition to crop protection, the system incorporates an automatic street light control mechanism powered by the same solar energy source. A relay-based switching circuit controls the street light operation, ensuring efficient energy utilization during nighttime. The proposed system operates independently of the power grid, reduces crop losses, minimizes human intervention, and promotes the use of renewable energy in agricultural applications. This makes it highly suitable for farms located in remote and rural areas.

Features of this project:

1. Storing solar energy in rechargeable battery.
2. Creating shocking circuitry using inverter circuit.
3. ON/OFF control for fence and also street light.
4. Utilization of free available source of energy from sun
5. Stored energy is used for streetlights and also for fence.
6. Low Power consumption
7. Long life.

The major building blocks of this project are:

1. Solar panel.
2. Pulse generator.
3. Mosfet.
4. Step up transformer.
5. ON/ OFF switch.
6. Fence.
7. Street light dome.
8. Relay

Block Diagram:

video:

In transmission section we are using solar and wind to charge the battery which is used to provide the power supply to the transmitting coil. In receiver section consist of vehicle and receiving coil. moving the vehicle ,it receives the power from transmitting coil which is indicated by the LED.

Wireless energy transfer or wireless power is the transmission of electrical energy from a power source to an electrical load without a conductive physical connection. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous, or impossible. The problem of wireless power transmission differs from that of wireless telecommunications, such as radio. In the latter, the proportion of energy received becomes critical only if it is too low for the signal to be distinguished from the background noise. With wireless power, efficiency is the more significant parameter.  A large part of the energy sent out by the generating plant must arrive at the receiver or receivers to make the system economical. The most common form of wireless power transmission is carried out using direct induction followed by resonant magnetic induction.

Features:

• Using wireless power transmission for EV vehicles.
• Using solar and wind renewable energy.

Components Used:

1. Solar.
2. Wind.
3. Charging circuit.
4. Rechargeable battery.
5. Transmitting and receiving coil.
6. Small toy car as EV vehicle.
7. LEDs.

video:

This system also continuously monitors the status of devices connected to it. In this project we are going to monitor the voltage generated by solar panel and temperature of grid. If any abnormal conditions in grid that is automatically sends to user through microcontroller by using Bluetooth module as a communication media. After completion of the command implementation this system sends the confirmation messages back to the calling user.

“Solar power grid status monitoring and alerting with Android smart phone technology” is a modern era automation system where we can control the status of the appliances from any where in the world. Here the devices to be controlled are interfaced with a Bluetooth module, which is capable of receiving instructions in the form of short message service and performs the necessary tasks. The buzzer gives beep alerts.

Objectives:

• To monitor power grid parameters such as solar panel voltage and grid temperature in real time.
• To provide remote monitoring and control of grid-connected devices using an Android smartphone via Bluetooth communication.
• To detect abnormal grid conditions and generate instant alerts to the user.
• To transmit status information and control commands between the smartphone and microcontroller using a Bluetooth module.
• To improve the reliability and safety of power grid operation through continuous monitoring and automated alerting.

The major building blocks of this project are:

1. Regulated power supply.
2. PIC Microcontroller.
3. Bluetooth module.
4. Solar panel
5. Charging circuit.
6. Rechargeable battery.
7. Voltage sensors.
8. LCD display.
9. Buzzer.
10. Crystal Oscillator.
11. Reset Button.
12. LED Indicators.

Software’s used:

1. PIC -C for compiling and dumping code into controller
2. Express SCH for Circuit design.

Regulated Power Supply:

video: