[Swlug] Morse code project

[Rhys Sage]

Thanks Colin. I had a look on evil bay and found something similar for about $8. Would you believe there is nowhere locally to get electronic components and such? Oh, for a Tom Whitehouse in Columbia or Lexington.

In the midst of trying to identify resistors right now. The colour bands of Chinese resistors aren't that great and both my meters (one digital and one analogue) are up the spout.

This is one of the infuriating things about the USA. Can't get small stuff because they want to sell big boxes and what can be bought is usually slapdash and shoddily made. 

Rhys Sage






On Sunday, 27 March 2022, 08:00:06 GMT-4, swlug-request at mailman.lug.org.uk <swlug-request at mailman.lug.org.uk> wrote: 





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Today's Topics:

  1. Re: Morse code project (Colin Law)
On Sat, 26 Mar 2022 at 01:23, Rhys Sage via Swlug
<swlug at mailman.lug.org.uk> wrote:

I am missing something here...

>
> At the moment I'm building a QRP Pixie shortwave transceiver. It'll produ=
ce likely an analogue audio output.

So the transceiver will produce an analogue audio output.

> I'll need to feed that into a Raspberry Pi.

which you need to feed to a Pi

> Do I need to use a digital to analogue converter

If the transceiver will produce an analogue output what do you want a DAC f=
or?

Colin

>  and has anybody any pointers? I realise I'm jumping around on various pr=
ojects. It's how I do things.
>
> Transmission is blindingly simple - I'd just put an optically-isolated DC=
relay on the GPIO and use that to close the key on the transmitter. Even t=
he Python code for that is straightforward. Reception and turning the input=
signal into something recognisable as Morse is a lot harder.
>
>
>
> Rhys Sage
>
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> Swlug at mailman.lug.org.uk
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