Open msalat opened 2 years ago
https://infocenter.nordicsemi.com/pdf/nRF52832_PS_v1.3.pdf#page=156 (nRF52832) max sink current is 7 mA @ VDD=3.3V.
Funny fact about the V2 onboard Speaker demo circuit datasheet, Page 3:
Extrenal speakers and microbit is a bit suckling em and see. A real magnet +coil speaker requiers a reverse bias diode
https://github.com/bbcmicrobit/micropython/blob/v1.0.1/docs/tutorials/music.rst
Tried it, micro:bit survived it. Then read the micro:bit schematic & NRF52833 datasheet: