Outdoor Solar Phone Charging Stand
The Solar Phone Charging Stand is an outdoor mobile phone charging station. A switching regulator will step down 12V input voltage to 5V output voltage for phone charging. It is equipped with a standalone solar PV system that supplies the energy demand of the product. The system intelligent is controlled by mbed NXP LPC1768 microcontroller. The microcontroller will read analog output of the charging circuit’s stunt resistor and derive the current drawn by the phone. System’s temperature can be measured using thermistor. The exhaust fan will turn on when temperature exceeds desired value. All reading is updated visually on a 16x2 LCD display. The standalone solar PV system’s electrical parameter can be extracted from MPPT charge controller via its MODBUS interface using the mbed microcontroller.
- 5V Phone Charging booth
- Standalone PV System
- 54W Monocrystalline Solar PV Panel
- 100Ah 12V Battery Capacity
- Charge Controller with MODBUS protocol
- Generate an average of 296Wh Daily
- 5 Day of Autonomy
- Adjustable Solar PV Panel tilting angle
- Emit zero pollutant
- Mbed NXP LPC1768 microcontroller updates system's electrical parameter on LCD display periodically
Program Flow Chart:
All components are provided by Ngee Ann Polytechnic. This is my third projects using the mbed microcontroller. I completed this project alone in less than 3 months. Understanding of MODBUS Protocol is required.
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