额，不记得了，大约60%左右吧，U8g添加一个字体挺占空间的，

蓝牙点灯
#include <SoftwareSerial.h>
SoftwareSerial BTSerial(10, 11); // RX | TX
void setup()
{
pinMode(9, OUTPUT);
digitalWrite(9, HIGH);
pinMode(13, OUTPUT);
digitalWrite(13, HIGH);
Serial.begin(9600);
Serial.println("Enter AT commands:");
BTSerial.begin(9600);
void loop()
{
if (BTSerial.available()){
char ch=BTSerial.read();
if(ch=='#'){
digitalWrite(13, HIGH);
}
else if(ch=='/'){
digitalWrite(13, LOW);
}
Serial.write(ch);
if (Serial.available())
BTSerial.write(Serial.read());
}
}

额。。。你这个怎么是这样看着像是字模那乱套了。。