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the headset has resistors in it for sense of what key is pressed. Can this be expanded on? like for-
- resistance measurement (if fully ranged I could almost turn it into a typewriter - which I wouldn't mind)
- data transmission (with audio being used for transmit - you can connect an infrared LED for an) infrared transciever, or could bit bang the I2C protocol (record or be master)
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03-17-2025, 05:07 PM
(This post was last modified: 03-17-2025, 05:07 PM by Jens Noriʇzsɔɥ.)
There has been a post in this forum on how to (mis)use the audio connectors. With more and more smartphones getting rid of it, I am not sure how/if it is still possible over USB or Lightning (I am also a bit worried about my smartphone, so I never tried it myself).
Wouldn‘t microcontroller be a better means for more sophisticated stuff? Data transmission by BLE with pretty good support in phyphox and by our phyphoxBLE library.
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03-18-2025, 03:48 PM
(This post was last modified: 03-20-2025, 07:51 AM by noitarud.)
Posts: 671
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Institution: RWTH Aachen University
hm… i had
https://phyphox.org/forums/showthread.php?tid=867 on my mind, however, it appears only sort-of related…
