I use an Axon (great product) since about 6 months without any problem. But since yesterday, I have the following error message when I connect to the USB (on Windows XP SP3): "USB device not recognized. Once of the USB devices attached to this computer has malfunction, and windows does not recognize it."
The last time it was working was 2 weeks ago. The downloaded program was working also (everything was working in fact). Yesterday, I tested again my program (I didn't use the Axon during 2 weeks). It was still working. Then I wanted to get some data on my PC. I stopped the power supply of the Axon, I connected it to the USB of the PC and I got this error message. It is the only thing that doesn't work, the program still works.
I tested on another PC, with another cable, same problem. So it seems to be a problem on the Axon.
Between 2 weeks ago and yesterday, nothing has changed in the connections in the application.
Some informations on my configuration:
- the Axon is powered by a 12 V power supply (not a battery)
- I have a gyroscope connected to the 3.3 V supply of the Axon (http://www.sparkfun.com/commerce/product_info.php?products_id=8955
). The output of the gyroscope is connected on ADC2, the 2 other inputs (PD and ST) are connected on the ground of C1 and C2.
- a H-bridge (http://cache.national.com/ds/LM/LMD18200.pdf
) is connected to A3, A7, H5 (PWM) and ADC8 (current measurement)
- a quadrature encoder (http://www.robotshop.ca/encodeur-quadrature-easy-roller-300-1.html
) is connected to 5V of Axon, ground of Axon, E7 and C3
Please tell me if you need more informations.
Thanks in advance for your help.