描述:Quartz Crystal Resonator HC49/UP Short 2 Pad Surface Mount (SMD) 3.2mm Height Metal Resistance Weld Seal 8.250MHz ±10ppm/15ppm over 0°C to +70°C 是否Rohs认证:符合 Brand Name:Ecliptek 是否无铅:不含铅
用arduino模拟经典的NE555定时器Arduino程序int npn=12;int out=6;void setup() {Serial.begin(9600);pinMode(npn,OUTPUT);pinMode(out,OUTPUT);}bool comp1,comp2;void loop() {int x=analogRead(A0);//reading the voltage at
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