Never been able to get any version of BFG to recognize a U3. Have uninstalled all previous drivers (Silabs, Zadig etc), but no cigar.
Any trick to getting current 5.40 build to "see" the U3? Running Windoze 7 Pro x64, fast machine, lots of memory. Thanks.
as per the README:
ANTMINER U3
-----------
The U3 does not support autodetection, so you will want to use --scan-serial to
manually probe it. For example, to scan all devices, you can use:
-S antminer:all --set antminer:chip=BM1382
Additionally, for optimal performance you will need to set voltage, clock, and
timing. Voltage format for the U3 is not documented by the manufacturer, thus
must be provided as hexadecimal configuration codes. Timing is provided in the
number of nanoseconds each hash takes at the given configuration. A
known-working configuration is:
--set antminer:voltage=x800 --set antminer:clock=237.5
--set antminer:timing=0.022421
it works just fine with
-S all with my setup.