CODEWITHSUNDEEP
coperating-systemkernelhardware-interface
kapil
kapil

Reputation: 483

How to on/off an electric bulb via computer's usb port using C language program

I want to write code in C language to switch on/off an electric bulb via USB port. USB port gives 5 volts, so I want that bulb can take power from computer's USB port.

Is it possible?

Upvotes: 0

Views: 1317

Answers (2)

flotto
flotto

Reputation: 561

Using USB for this task is a bit complicated, the common way is to use some (ftdi) usb to serial converter. To switch a light bulb or motor you need a micro controller on the other side of the usb cable.

In fact, an arduino-pcb has an build in usb to serial converter, so you can use an arduino to switch something on/off by using an usb port.

How to read/write a serial port depends on your operating system, but there a lot of examples for each operating system

Upvotes: 2

ddbug
ddbug

Reputation: 1539

It seems that there's no easy way to directly switch the power of USB ports. At least, on a normal PC. So you will need some kind of relay.

Upvotes: 0

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