RFID with PIC (PIC16F876)

Save yourself a lot of trouble and interface to the PC via the COM port. This eliminates both the USB interface ic at the PIC and the driver software in the PC.

Luhan

My laptop has no COM ports. Most desk tops have no COM ports.

Now what ??? Get a USB to serial adatper for my PC ??

There are some pre-built USB-to-serial interfaces. Your PIC can talk serial to the interface and the USB side talks to the PC.

The one I like to use is:

For a one off project, this works great.

These people started it all:

[snip]

What cheapshit brand?

[snip]

Nonsense! My latest cheapy desktop has 2 serial ports and 4 USB ports on the back, 2 USB ports on the front.

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | |

| 1962 | I love to cook with wine. Sometimes I even put it in the food.

Jim Thompson skrev:

alot of laptops have no serial port these days...

yes, most desktops still have a serialport, but..

when you build something that needs to talk to a pc you either put a rs232 level converter on the board and have to find a power supply, or you put a USB to serial chip on and you have everything and those with out a serialport are happy too.

-Lasse

Dell Inspiron 9300

OK, I can take your argument the other way:

- None of *my* four desktops nor one laptop has USB

- All five of my 'puters have at least one serial port; two of them have two serial ports.

So USB devices are useless to me, serial devices just fine.

Get with the times man... ;)

I got emailed an add the other day, one of those old toshiba laptops, white with LCD character screen. Some might remember the add, it was comparing the Toshiba to the IBM laptop on size.