Q: What is the distance supported by TV remote?
A: The distance supported is about 10 feet
Q: Can this system be used with any PC or laptop?
A: Yes, this system can be used with a PC directly. But for a laptop, a USB to DB9 converter is used.
Q: What is the function of level shifter Max232?
A: Level shifter Max232 is used to shift logic level from TTL to RS232 and vice-versa
Q: Can I use in Windows 7 or higher OS?
A: This project has been tested with Windows XP only till date.
Q: How can I use it with an USB?
A: You require USB-to-DB9 converter to use it with a USB.
Q: What is the family of microcontroller used?
A: A microcontroller from 8051 family is used.
Q: What is the formula for calculating smoothing capacitor value?
A: There is some approximated formula .Peak to peak ripple voltage = Load current in amps / (2*line frequency in hertz *capacitance in farads). But as rule of thumb for 1 A current 1000uF is best. Thus it is load dependent.