Alex: I'd use the GTL2002 level translator. It's either that or make your own bidirectional level translator from discretes.
Since the Softrocks don't allow for the possibility of computer control of the Si570, I'll probably keep using the WB6HDW board with the Bit Whacker and cable the RF over to a Softrock. Chuck --- In [email protected], "alexle188" <[EMAIL PROTECTED]> wrote: > > Hi Chuck: please advise what need to be done to interface the UBW > with SRLX8.3. The UBW runs on +5V and the Si570 on +3.3V. Is it > advisable to connect the SDA, SCL pins from the UBW directly to the > corresponding pins of SRLX8.3 PIC socket? Is a level translator like > the one in the WB6DHW Si570 board needed? > > I have also made some minor additions to Joe Hopster's firmware - > adding a subset of the Kenwood CAT interface so that the UBW emulates > a Kenwood TS-2000. The CAT interface code works on my UBW <-> DDS60 > hardware but it is not tested on UBW <-> Si570 yet as I haven't built > the hardware :) > > I will incorporate your additions and post the source after completing > the hardware and testing the firmware. > > Alex, 9V1AL > > --- In [email protected], "chutton12000" <charlesh3@> wrote: > > > > I've taken Joe Hopster's firmware and added several commands to it: > > > > - X8 (to support the Softrock X8 mode) > > - RM (to read EEPROM memories without changing the Si 570 current > > frequency > > - WM (to write memories to the EPROM without changing the Si570 > > current frequency) > > > > This code is in a folder called "USB Bit Whacker". Within a day (I > > hope), I'll add a PC controller program that manages the memories, > > displays and sets current & calibration frequencies, etc. > > > > Thanks to Joe for the good starting point for the firmware. > > > > > > Chuck > > >
