DAQARTA (Data AcQuisition And Real-Time Analysis) is FREE software that turns your Windows sound card into a full-featured oscilloscope, FFT spectrum analyzer (with color spectrograms/voiceprints), signal averager, frequency counter, voltmeter, sound level meter, phase meter, LCR meter, THD and IMD distortion meters, sound-activated recorder, plus 8-channel signal generator (including engine crank/cam sensor simulator) and DaqMusiq and Music_from_Anything MIDI music generators. Arduino and Numat