One thing – do not forget to give the “update” command once you have uploaded the code followed by a “y” and return. When I went to a Windows 8.1 machine everything went as expected. I got an “Error File not found!” message when I was trying to upload the file. I had some difficulty uploading the new firmware but that was due to Windows 10 and ExtraPuTTY not playing along very well. * Should now be possible to do balanced and crossovers by parallel the inputs and connecting the isolated serial ports together, more details to follow * The tiny bug on signal saturation on -full scale fixed * New mode setting: Normal, Inverted, Balanced Left, Balanced Right * Stock filter now have improved deemphasis filter * FIR1 coefficients are now 1.31 format, filters should be good down to around -150 db * You can now select four sets of filters, named Linear, Mixed, Minimum and Soft. * Power Off plop can be reduced to 1/3 by adding a single 27K4 resistors, see picture attachment * Volume Control also now have zero crossing detect * Volume Control now is -80db to +10 db, and phase bug fixed * Serial Port now interrupt driven, no character loss at high speed * Isolated Serial port now works, note that port is at 3.3V cmos level * PLL Clock Sync at sample rate change cut down to less than 0.2 second A few hours ago Soren released the much-anticipated new firmware for the dam1021: Īccording to Soren, these are the changes to the firmware:
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