Hi again,

I now removed graphite magic again. R1 now gives me 1k and the non connected R2 is at 1.02k if measured in circuit. Voltage dropped to 0.83V again. Miner is still hashing to slow but hashing! Did anyone figure out what all the components on the board are?

I have:

Y1 25 MHz Oszillator (thats the 25 in the freqency formular)
U1 CP2102 USB to UART Bridge
U2 BM1380 ASIC
U3 503B or 5038 (hard to read) WTF?
U4 AOZ1021A Voltage Regulator
U5 5B402? WTF?

I'm interested in U3 and U5 because I still don't understand where the device stores it's calibration data but there seems to be something like that...and the serial protocoll the BM1380 speaks would be interesting, too.

Greetings,

              miniasic.