03-31-2019, 12:19 AM
Hi guys,
I found this work about use the headphone jack as an external port on smartphone. With a simple circuit they can measure external temperature (through microfone amplitude) and dc voltage (see reference 5) through microfone frequence.
Next week I will try this circuits with phyphox and post my results here.
https://www.researchgate.net/publication...n_cookbook
I found this work about use the headphone jack as an external port on smartphone. With a simple circuit they can measure external temperature (through microfone amplitude) and dc voltage (see reference 5) through microfone frequence.
Next week I will try this circuits with phyphox and post my results here.
https://www.researchgate.net/publication...n_cookbook