Hi, I see a lot of ideas regarding control of the Si570. To be honest the best thing IMHO is the usage of PowerSDR-SR40 that can control via LPT (if you have an LPT port of course) and I2C the Si570. Although I also have a couple of Dave's 995x boards, it seems to me that utilising the pic from that board is a waste if you can simply use the plain LPT port for that.
Just my 2c 73 Christos SV1EIA --- In [email protected], "alexle188" <[EMAIL PROTECTED]> wrote: > > Thanks for the advice. > > I'll use the WB6HDW board for the level translator. However, instead > of cabling the RF over, I'm planning to cable 4 wires for the > translated i2c signals between the WB6HDW board and the 12f683 socket > of the SRLX8.3 (+3.3V, Gnd, SCL, SDA) to control the Si570 onboard the > SRLX8.3. > > For the WB6HDW board, I'm just going to populate the GTL2002, the > caps, and the +5V side resistors, omitting the power supply and > regulator. The GTL2002 does not need power, and the +3.3V reference > can be taken from the SRLX8.3 board. > > This way, I can plug in the 12f683 for the fixed frequencies, or take > out the 12f683 and plug in the 4 wires from the WB6HDW board (which I > intend to take from the solder pads for the Si570 on WB6HDW board). > > Alex > > > --- In [email protected], "chutton12000" <charlesh3@> wrote: > > > > 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" <lee188@> 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 > > > > > > > > > >
