Hello folks,
i have build sangaboard 0.3 a week ago and from that time i am trying to get it working, didnt find any failure on the board itself. When i connect the board to the programmer, i have no problem to burn bootloader, but when i connect the board to usb it is not recognised at all, not in windows nor in linux, i also tried to put differend chip where i already uploaded the firmware with the same result.
As you can see from the pictures, i didnt find Atmega32U4-AU, so i used MU version instead and created adapter for it, there are no short circuits.
Do you have any idea what could be the problem ? I am using USBasp programmer.
The chip is taken from Arduino Leonardo with 16Mhz crystal, may there be some fuse bits that needs to be changed ? Would appreciate if you share the bits on your working board.
Sharing actual fuse bits from the chip:
C:\Users\Blapa\Desktop\usbasp.2011-05-28>avrdude -p m32u4 -c usbasp -U lfuse:r:-:i
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.02s
avrdude: Device signature = 0x1e9587 (probably m32u4)
avrdude: reading lfuse memory:
Reading | ################################################## | 100% 0.01s
avrdude: writing output file “”
:01000000FF00
:00000001FF
avrdude: safemode: Fuses OK (E:CB, H:D8, L:FF)
avrdude done. Thank you.
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