开云体育

I've got the QRP Labs parts to make this happen (2x Relay boards, and 80m, 60m, 40m, and 20m LPFs and BPFs) but haven't started the mods yet.? Life always gets hectic during Autumn, so I'm hoping I have more time to work on this come January (after my daughter's ballet season.)

The one thing I haven't figured out yet is how to select the band.? We could do it in software on the display with knob/buttons, then have the Raduino output a band select signal.? Would require a GPIO for every band, or some fancy interface hardware to reduce the number of pins used, and the current modifications supported by Allard's software just don't have this many pins.

Instead, I'm thinking of using a 2P6T rotary switch like [1], and doing two things with it:
1: Put a voltage divider ladder on one pole that generates an analog voltage to send to the microcontroller to sense which position the switch is in.? All 6 positions (and a lot more) can be sensed with a single pin.? Then, the Raduino will know which VFO frequency to use.

2: Use the other pole to drive the relay boards directly.? No RF through the switch (we'd need 4 poles for that, and we'd still need a way to mount all the filters!), just a 5v line to select which relay on the relay boards is energized.? One line can drive both relay boards. (Just make sure you have the filters in the same positions!)

Any better ideas?

-Mark

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