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If the code is in C then it remains in common with those using the Nano, and updates to one can be easily ported to the other. ?Perhaps in C but with hooks so parts of it can be called from python

Absloutely! though LCD support not necessary - display by the Pi's HDMI. 73...

You are correct about the 3.3V I/O and lack of ADC pins.? I imagine we'd design a special 'HAT' (as Pi daughterboards are often called) that contained an ADC like the one you suggested plus the

Greetings, all! I seem to have put a cat among some pigeons! :) My hope would be that they can fly ... me, I'm hobbled. Financially - I'm a pensioner, and my reserves have been pillaged by

At the bitx40 we built, the BFO frequency varies in the voice signal. I wonder if it is normal or if someone has ever faced this problem as he did it. Thank you!

Yes,?the?RPi?does not have an ADC, so you would need to add an external one. There are a number of options available from

Doing a little poking around on speech processing and ran into a couple of interesting possibilities, not necessarily cheap. A very powerful homebrew digital approach:

Update: The measurements I took earlier seemed odd. Further experiments (better setup) displayed actual delay for both operations are closer to 735 uSec each. Makes more sense. 73, Don, ND6T

Wouldn't an RPi need an external ADC?

Hmmmm, I wonder if there would be enough processor to run some sort of digital audio workstation app with compressor/gate/limiter/eq plugins for TX audio processing.

Should work. The RPi-Zero is $5, and way way way more capable than a Nano. Note that the RPi has 3.3v IO pins, not 5v like the Nano. Could get by without any analog pins, or could add something like

A quick bench test revealed an ON time delay of 800uSec using set_freq() and a 480uSec delay in turning it off with output_enable(). This was with the Etherkit version 2.0.6. I pulsed a digital pin

Hey guys,? I’m finishing up my build of a multi band BitX and need two more bands to fill my filter board. I already have 80, 40, & 20 meters in place. Has anyone gone higher than 17 meters without

I joined this group a few weeks ago, and have been lurking about trying to learn as much as I could about the Bitx/uBitx before making the plunge. I, too, have been considering replacing the Arduino

It depends on what all lies within that function call. Look at the lib to see if it can be tightened up. I would just use the 2 clock outputs or use a faster cpu. -- Paul Mateer, AA9GG Elan

Not sure which library you are using, perhaps Etherkit? The current code from Allard uses si5351bx_setfreq() and a frequency update takes about a dozen bytes, or 100 bits of i2c writes to the si5351.

I recently replaced my kit's Raduino. This has left me with a likely-functional SI5351 with usable points for wiring. I've been wondering: could that be farmed onto a Raspberry Pi Zero? Display HDMI

Most codes go to Tx at key-down (6ms delay) and stay there until more than # ms after last key-up (beyond last CW character and word-space time) then back to Rx (delay imperceptible). That delay only

It seems to take about 6ms to execute the set frequency function - ??si5351.set_freq(f , SI5351_CLK0); I determined this by toggling an output pin before and after this line of code. Is that normal?

Hi All, I've been reading the discussions about the W8TEE B40 and am considering ordering parts for this mod. I read through the build manual, but I was hoping to learn more about your real world