The project is designed to measure frequencies ranging from 1Hz to over 2 MHz by using the 20-pin ATtiny2313 microcontroller. A standard HD44780 16X2 bright white text and blue backlit LCD is used to ...
I designed the circuit in Figure 1 as a part of a data transmission system that has a carrier frequency of 400 kHz using on-off keying (OOK) modulation. I needed to detect the presence of the carrier ...
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