Arduino – CLCD with I2C – Battery Level Guage
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#include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 16, 2); int varRes=A1; int vars=0; unsigned long cnt=0; byte user_value1[8]={ B01110, B11011, B10001, B10001, B10001, B10001, B10001, B11111 }; byte user_value2[8]={ B01110, B11011, B10001, B10001, B10001, B10001, B11111, B11111 }; byte user_value3[8]={ B01110, B11011, B10001, B10001, B10001, B11111, B11111, B11111 }; byte user_value4[8]={ B01110, B11011, B10001, B10001, B11111, B11111, B11111, B11111 }; byte user_value5[8]={ B01110, B11011, B10001, B11111, B11111, B11111, B11111, B11111 }; byte user_value6[8]={ B01110, B11011, B11111, B11111, B11111, B11111, B11111, B11111 }; byte user_value7[8]={ B01110, B11111, B11111, B11111, B11111, B11111, B11111, B11111 }; void setup() { lcd.init(); delay(1000); lcd.createChar(0, user_value1); lcd.createChar(1, user_value2); lcd.createChar(2, user_value3); lcd.createChar(3, user_value4); lcd.createChar(4, user_value5); lcd.createChar(5, user_value6); lcd.createChar(6, user_value7); lcd.setCursor(0,1); lcd.print("Battery"); lcd.setCursor(0,0); for (int i=0;i<7;i++) { lcd.write(i); } lcd.backlight(); } void loop() { lcd.setCursor(15,0); vars=map(analogRead(varRes), 0, 1023, 0, 6); if (vars==0) { if (cnt==0) { cnt=millis(); lcd.write(vars); } else if (millis() > cnt+600) { cnt=0; } else if (millis() > cnt+300) { lcd.print(" "); } } else { lcd.write(vars); cnt=0; } } |