Hi there! I'm new on Arduino, and I'm trying to use the FHT library. I installed the library and when I open the fhb_adc example and verify it, it says this: fht_adc.pde: In function 'void loop()': fht_adc:35: error: 'fht_input' was not declared in this scope fht_adc:37: error: 'fht_window' was …

Can't use FHT library

robtillaart April 30, 2014, 9:58am 2

after installing a library you need to restart all occurrences of the IDE.
might help.

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