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Eeyore was very glad to be able to stop thinking for a little, in order to say "How do you do" in a gloomy manner to Pooh.
"And how are you?" said Winnie-the-Pooh.
Eeyore shook his head from side to side. "Not very how," he said. "I don't seem to felt at all how for a long time."
It's a 4046 pll connected to the analogue input of a pic16f88 which then samples & transmits the data at 9600 baud.
Dsp it certainly ain't
The noise level is high in the building and the signal level is low... gnding the wireless via the decoder/sampler thingie brings up the noise floor higher than the required signal... ho hum...
The noise level is high in the building and the signal level is low... gnding the wireless via the decoder/sampler thingie brings up the noise floor higher than the required signal... ho hum...
Tried using an audio transformer to isolate the gnds but the interwinding capacitance was too high, so it made little difference...
Next cunning ploy was to use an optocoupler... in a linear mode... which, surprisingly, actually worked rather well.
I shall need a little more gain on the wireless side, I just knew those CE amplifier boards all my dear students built would come in handy for something...
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