I have made OpenQCM hardware from your PCB Garber file and BOM, and I flashed Arduino Micro to FW1.3.
I use 9MHz quartz but my OpenQCM device shows 7MHz frequency, 2MHz frequency shift.
Is it a problem for measure the weight of substance on quartz disk and how to correct frequency shift ?
I have made OpenQCM hardware from your PCB Garber file and BOM, and I flashed Arduino Micro to FW1.3.
I use 9MHz quartz but my OpenQCM device shows 7MHz frequency, 2MHz frequency shift.
Is it a problem for measure the weight of substance on quartz disk and how to correct frequency shift ?