I m making freeduino . when i connect my board to usb port of computer , then there is no sound i.e. it is not reconized. I M USING FT232RL. when i measure violtage on pin 15 there in no voltage on my board while in original arduino duemlainove on pin 16 it is showing 3.4 v .
i check voltages on all pins which are same but following pins showing differences
my board arduino
pin 15 ------------------- 0 3.4
pin 27 5.15 0
pin 28 1.66 0
can any one help
Which freeduino? If it's the NKC Freeduino (Through-hole. Might still say "PCB by WestfW" in the corner), you know that there is no automatic power switch, and you need a jumper, a fuse (or "equiv") and the ferrite bead (or "equiv")?
Have you installed FTDI drivers?
The pins you're looking at are ... not so appropriate to look at with a voltmeter. Pin 15 is one of the USB data pins, pin 27 and 28 are the (optional) crystal oscillator pins. I couldn't say offhand what those pins SHOULD read.
i make this test by removing atmega chips on board. there is sound when we connect arduino board and noting for freeduino board