Hello, I am using the Tone() function to create a frequency at 50% duty cycle so it can be read by a campbell scientific datalogger. If I output a tone at 1500Hz, the serial monitor says 1500Hz, but the datalogger reads a frequency of 1485. Similar, I tell it to output at 831, and it outputs as 826H…

Tone() not producing correct frequency

Delta_G June 8, 2018, 8:18pm 5

@GM

If I'm making 1500hz from 16MHz I expect to be able to get within around 100ppm or so at least right? Or am I doing my calculation wrong.

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