This Fast Fourier Transform (FFT) is performed using 8-bit fixed point arithmetic, making it very fast to execute, especially if used with one of the newer 18FxxKxx devices that are capable of 16mips using a 64MHz oscillator.
A recent forum discussion related to PCB cleaning, carried a few posts on the various fluids that might be used. Poeple often experiment with non standard substances in an effort to find cheaper or more efficient solutions to common day probelms. PCB's are often contaminated with hard to remove substances, anything from greasy finger marks to glue from labels.
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MAX14595: High-Speed, Open-Drain Capable Logic-Level Translator
The MAX14595 is a dual-channel, bidirectional logic-level translator designed specifically for low power consumption making