So I have a gizDuino ATMEGA 644(an arduino clone), yesterday it is working very well and even uploaded some codes into it. But today my computer suddenly don't recognize the port where my microcontroller is connected, I'm sure that i installed the driver and even tried to use several USB ports and cable but it doesn't recognize it. I'm really confused because it does power-up when it is connected to my computer but it really don't recognize the port.Does someone experienced my situation?What seems to be my problem? How did you solve the problem? pls help
closed as off-topic by Joe Hass, Passerby, Stephen Collings, Matt Young, Dave Tweed♦ Jan 29 '14 at 13:36
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions on the use of electronic devices are off-topic as this site is intended specifically for questions on electronics design." – Joe Hass, Passerby, Stephen Collings, Matt Young, Dave Tweed
Try the obvious ones first:
- Try on another computer.
- Look in Device Manager (if running Windows) to see if an unknown device appears/disappears when plugging/unplugging the device.
- Reboot and retry.
- Again for Windows only, do you get the USB Connection sounds when plugging/unplugging?
[I] used the VUSB alone with a 7.4v while the VUSB only accepts 5v[,] will this hurt the device?
Yes it will.
The gizDuiono uses a Prolific PL-2303 serial USB IC.
It's data sheet says
USB Port VBUS, 5V Power. (6.5V for OTPROM writing voltage).
The OTPROM can be programmed twice
Power Supply Voltage - VDD_5 -0.3 to 6.5 V
So it's possible you've either fried this chip or corrupted it's ROM.