[Swlug] Morse code project

[Colin Law]

On Sun, 27 Mar 2022 at 15:05, Rhys Sage via Swlug
<swlug at mailman.lug.org.uk> wrote:
>
> I seem not to have been all that clear. I tend to get that way after 5 days of 12 hour workdays.
>
> I'm building a 40m QRP Pixie shortwave transciever. (got 7 resistors to put on and an aerial to make).
> It has an audio socket for audio output (no speaker). It will be receiving primarily on the 7.023mhz band, Morse code.
>
> What I want to do is to connect the speaker output to the Pi. As the output will be analogue I wondered whether I need an analogue to digital converter chip in between.There is no volume control on the Pixie as it's a carrier wave device.

Ah, ADC, not DAC (which is what you said originally).  That makes
sense.  Yes, the Pi does not have an audio input so you will have to
use some hardware to give you that input.  Maybe something like this
would do the job:
https://www.sybausa.com/index.php?route=product/product&product_id=693

Colin