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Re: QRP iambic keyer

PostPosted: Thu May 10, 2012 12:46 pm
Eamon wrote:I'm not sure why you would want to build a separate oscillator, Charles, when pin 7 gives you a side tone.

Is the side tone generated by the chip a Sine wave or square wave? Getting a nice sine wave would be a good reason for using a separate osc. for side tone.
You can generate a decent sine wave using the PWM with a 256 step look-up table, and with a bit of filtering on output.


Re: QRP iambic keyer (initial discussion)

PostPosted: Fri May 11, 2012 12:33 am
by Eamon
I'm locking this topic and starting a new one as the build gets under way.