1 Results for "《 예약문의 OIO↗8489↗8306》강남레깅스룸㏊선릉레깅스mystery선릉레깅스Χ레깅스룸briefly 레깅스룸ㄷ강남레깅스룸┐강남레깅스㈋⒴선릉레깅스modification"

In this period of isolation, I'm trying to build an oximeter with parts already in house. An oximeter is made by two leds and a photodiode.