• Roxcore Superbeat na RDA5850 - nie startuje

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#1 Roxcore Superbeat na RDA5850 - nie startuje


by HotIce 6 June 2019, 08:00
Witam kolegów,
Walczę dłuższy czas z tym głośnikiem, czasami startował, nie wiadomo od czego to zależało... Zauważyłem że jest zaniżone napięcie zasilania mikrokontrolera MC80F0308AD, prawdopodobnie winny stabilizator smd, wstawiłem w jego miejsce 78L05, obserwacja oscyloskopem ujawnia że jego kwarc pracuje, na taśmie od sterowania przyciskami jest przebieg sygnału pwm, miga zielona dioda zasilania, ładowanie baterii przebiega poprawnie. Niestety do płytki modułu bluetooth z układem RDA5850 nie jest podawane napięcie 5V na pin.1 ,nie wiem co go załącza ale pewnie jakiś sygnał z mikrokontrolera. Podałem na pin.1 tej płytki oddzielnie zasilanie 5v, pobór prądu 30mA i widać że jego kwarc zaczyna pracę, na pamięci eeprom pojawiają się jakieś przebiegi ale nic poza tym się nie dzieje, może trzeba podać jeszcze jakieś sygnały? Poniżej zdjęcie płyty:
Image

Re: Roxcore Superbeat na RDA5850 - nie startuje


by Google Adsense [BOT] 6 June 2019, 08:00
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