“There is much pleasure in useless knowledge.” — Bertrand Russell
Okay, I’ve been thinking (somewhat abstractly, since I have had relatively little free time lately) about what I eventually want my beacon transmitter to be. One of the issues with it is that I’d like it to be relatively autonomous and lower power: I’d like it to be able to run for weeks at a [...]
My experimentation with oscilloscope displays made me wonder what the oscilloscope clock by Sparkfun/Dutchtronix used. It turns out to be a $5 dual parallel input DAC from Analog Devices, even available as a 20 pin PDIP. It can apparently do 833K samples per second, making it quite a bit faster than a conventional sound card [...]
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